Monday, October 11, 2021

Doctors claim Brazil hospitals gave dodgy COVID-19 care

By DÉBORA ÁLVARES

1 of 5
A demonstrator in a Brazilian President Jair Bolsonaro mask protests against the Prevent Senior health care company outside its headquarters in Sao Paulo, Brazil, Sept. 30, 2021. Whistleblowing doctors, through their lawyer, testified at the Senate last week that Prevent Senior enlisted participants to test unproven drugs without proper consent and forced doctors to toe the line on prescribing unproven drugs touted by President Jair Bolsonaro as part of a “COVID kit,” in the treatment of the new coronavirus. (AP Photo/Marcelo Chello)


BRASILIA, Brazil (AP) — Irene Castilho didn’t even have a day to grieve after her husband died of COVID-19. She was sick, too, coughing and struggling to breathe; he was barely gone when she started using his oxygen mask. The same day, on March 22, she was admitted to a hospital in Sao Paulo.

The 71-year-old had followed doctors’ instructions to the letter – dutifully taking her doses of hydroxychloroquine. She also took ivermectin and a battery of anti-inflammatories and vitamins in the so-called “COVID kit” that her health care company, Prevent Senior, mailed to her home.

Still, her condition had deteriorated.

At the hospital, Castilho received dialysis and was intubated. When physicians consulted Castilho’s daughters about giving her flutamide — a drug typically used for prostate cancer – they declined, worried about possible side effects for their mother who recently had liver cancer.



Luiz Cezar Pereira gets emotional when talking about his late mother during an interview at his family's home in Guarulhos, Brazil, Friday, Oct. 1, 2021. Pereira's mother died of COVID-19 and was treated by health care company Prevent Senior, which is under investigation for allegedly forcing doctors to test unproven drugs on coronavirus patients. Pereira's mother was treated with flutamide, a drug typically used for prostate cancer, for which he eventually consented after resisting when his online research found it wasn’t scientifically proven. (AP Photo/Marcelo Chello)


They later saw a nurse administering flutamide; she told them it had been prescribed despite their objection.

Castilho died in late April, 33 days after her husband, and her daughters scattered her ashes upon his grave.

“You know that passionate couple? That was them,” her daughter Kátia Castilho told the Associated Press in a video call from northeastern city Joao Pessoa. “That’s what keeps me from staying silent. That’s what makes me unafraid. It’s a truth that I wish were a lie. It’s a wound that will never scar.”

Castilho’s case is one of a series of examples that have led to explosive accusations against Prevent Senior, which operates 10 hospitals in Sao Paulo, that have scandalized Brazil since mid-September.

Whistleblowing doctors, through their lawyer, testified at the Senate last week that Prevent Senior enlisted participants to test unproven drugs without proper consent and forced doctors to toe the line on prescribing unproven drugs touted by President Jair Bolsonaro as part of a “COVID kit.”

Some senators have said it appears Prevent Senior falsified death certificates to omit COVID-19 as cause of death. Authorities are also investigating the complaints the company conducted research without proper permission.

The case underscores the resilient rift in polarized Brazil over proper treatment of COVID-19 patients, with many in the nation — including the unvaccinated president — bucking global scientific recommendations. And there’s concern that other providers likewise implemented dodgy policies.

Two weeks ago, Pedro Batista Júnior, Prevent Senior’s executive director, testified to senators that doctors were free to make their own prescriptions for treatment of COVID-19 and said patients had freely agreed to take their COVID kits.

In response to more than a dozen questions from the AP, Prevent Senior denied all wrongdoing, irregularities at its facilities or having conducted unapproved trials. It said all patients or family members consented before receiving treatment.

It didn’t respond to questions about how many patients received the COVID kits.

Brazil has a public health care system, though service is often subpar. Many middle-class Brazilians have private plans, but costs for the elderly are high.

Prevent Senior seemed to help fill that gap. It was founded in 1997 and grew among those who couldn’t afford premium care; its monthly cost is about $300, half that of some competitors. The company has more than 500,000 clients, with an average age of 68.

Three doctors formerly employed by Prevent Senior — George Joppert, Alessandra Joppert and Walter Correa de Souza Neto — told television program “Fantastico” on Oct. 3 that doctors received instructions from company officials to prescribe hydroxychloroquine. Until that interview, all had remained anonymous.

Souza Neto repeated that assertion in Senate testimony on Thursday: “Between the end of March and April (2020), (Prevent Senior) instituted a protocol to prescribe hydroxychloroquine for patients. There was no autonomy for the doctor; it was mandatory.”

The antimalarial has been given glowing endorsements by Bolsonaro and his allies, who are among few remaining global champions for the drug. While a few studies at the pandemic’s onset suggested it might be promising, they were largely conducted in lab dishes, not people. Extensive worldwide research has long since found it to be ineffective and potentially dangerous for COVID-19.

The doctors also said they were told to prescribe ivermectin, an anti-parasite drug whose effectiveness for COVID-19 remains unproven. The American Medical Association recommends against prescribing it outside of formal trials.

Both drugs are part of what President Jair Bolsonaro and his allies refer to as “early treatment” for COVID-19. The president defended “early treatment” as recently as Sept. 20 at the U.N. General Assembly. He and his lawmaker son have also cited the healing potential of proxalutamide, an anti-androgen similar to flutamide that is still undergoing trials as a potential COVID-19 medication.

Pressure to prescribe hydroxychloroquine and ivermectin is corroborated by internal Prevent Senior chat groups on WhatsApp obtained by The Associated Press, and which were previously shared with the Senate committee investigating the nation’s COVID-19 response.

They include messages sent by Benedito Júnior and another executive, two current clinic directors, one former clinic director, and an unnamed physician.

Both drugs are also relatively inexpensive. One of the directors sent messages demanding their prescription while highlighting Prevent Senior’s slipping finances.

“We can’t lose focus. We’ve started having bad revenues again,” a director named Rodrigo Esper wrote to doctors in May 2020 while urging use of the drugs. “We still haven’t hit the peak of the pandemic and we’re losing revenue.”

Lawyer Bruna Morato, who represents 12 doctors currently or previously employed by Prevent Senior, told senators on Sept. 28 that her clients were repeatedly told to choose between prescribing dubious drugs or losing their jobs.

In polarized Brazil, perspectives on COVID-19 have assumed ideological contours, particularly as Bolsonaro repeatedly downplayed the disease’s severity and undermined governors’ and mayors’ measures to control its spread.

Armchair epidemiologists have shown themselves willing to excoriate anyone who voices trust in the so-called global experts or expresses doubt about the effectiveness of the COVID kit prescribed by doctors at Prevent and elsewhere. Bolsonaro claims that the Senate committee is politically motivated and working unfairly to pin the pandemic’s deaths on him.

The press office of Brazil’s presidency didn’t respond to requests for comment for this story.

In response to questions from the AP, Prevent Senior insisted that doctors had been free to prescribe the COVID kit or not.

But that medical autonomy has been challenged by the three doctors interviewed by “Fantastico,” Senate testimony by the lawyer of 12 doctors and five of the messages reviewed by the AP.

On March 21 this year, a doctor sent a message saying an executive named Rafael had told her that prescription of the COVID kit was mandatory.

“Rafael told me prescription of the COVID kit is obligatory, but I don’t feel comfortable with that. I’d like to know how I should proceed,” the doctor wrote to a recipient who was not identified. The message was one of those shared with Senate investigators.

Some patients other than Castilho also were given flutamide — though with consent.

Luiz Cesar Pereira said he had initially resisted a doctor urging him to use the drug for his mother after he researched on the internet and found it wasn’t scientifically proven.

”‘Trust me, we’re going to recover your mom,’” Pereira recalled the doctor saying. He finally relented, and gave consent.

“In my blessed ignorance, I believed. ... Because I don’t know anything. I don’t have any friend who’s a doctor,” said Pereira, 45, who sells construction materials.

His mother eventually died.

Dr. José Davi Urbaez, president of the capital’s society of infectious disease specialists, said he believes Prevent Senior’s use of unproven treatments is just “the tip of the iceberg.”

“What was done with ‘early treatment’ is criminal, and not limited to Prevent,” he said. “There needs to be a very precise investigation of this, and punishment should be exemplary, because it underscores failure in the ethics of medical practice.”

Prevent Senior told the AP that it wasn’t formally testing flutamide, but said doctors were allowed to administer it. The company maintained that the drug can be helpful in treating COVID-19.

Jorge Venâncio, commissioner of Brazil’s National Research Ethics Commission, told the AP that the only application Prevent Senior made for COVID-19 research was related to the prescription of hydroxychloroquine and azithromycin, an anti-inflammatory that also hasn’t proven helpful.

He said the council approved that request to start trials in April 2020 and the hospital published its results just three days later, indicating the study had already been done.

Prevent Senior told the AP it was not a scientific study, but rather an “observational report” comparing patients who received hydroxychloroquine and azithromycin with others who didn’t take the drugs, and which started in March.

“They published a pre-print with the results of the research, with 636 patients, which is impossible; there’s no way to do that,” Venâncio said. “Even if it were observational research, as they’re saying now, it would have to be registered.”

Prevent Senior disputed the need for registration with the commission.

But the research council gave that information to prosecutors in Sao Paulo who are investigating the healthcare provider, and who have received complaints from doctors and patients. The Senate committee is also sharing information with prosecutors.

The lawmakers are also investigating possible fraud in death certificates. In May 2020, the Health Ministry issued guidelines stating that a death stemming from COVID-19 should still be classified as such on a death certificate, even if the patient had stopped testing positive for the virus itself.

“If the person was admitted for COVID, COVID has to be on the death certificate,” said Daniel Dourado, a doctor, lawyer and researcher at the University of Sao Paulo.

But that didn’t always happen. Luciano Hang, a department store magnate who is a fervent Bolsonaro supporter, told the Senate committee his mother was admitted to a Prevent Senior facility in Sao Paulo with COVID-19. Yet the disease doesn’t appear on her death certificate, a copy of which the AP reviewed.


Demonstrators protest against the Prevent Senior health care company outside its headquarters in Sao Paulo, Brazil, Sept. 30, 2021. Whistleblowing doctors, through their lawyer, testified at the Senate last week that Prevent Senior enlisted participants to test unproven drugs without proper consent and forced doctors to toe the line on prescribing unproven drugs touted by President Jair Bolsonaro as part of a “COVID kit,” in the treatment of the new coronavirus.
(AP Photo/Marcelo Chello)


It remains unclear whether that means patients’ deaths were omitted from state and national tallies of COVID-19 deaths.

Prevent Senior’s press office told the AP that this didn’t interfere with compulsory notification to authorities.

Sen. Randolfe Rodrigues, who sits on the committee, told the AP he believes it did affect the tallies, but there will be no way to prove that for months. Others agree.

“Prevent hid COVID-19 deaths. And that was intentional. I have never seen anything of this scale,” said Dr. Gonzalo Vecina, one of the founders of Brazil’s health regulator. “They committed crimes and we need to identify who produced false information that fed into the public health care system.”

Neither Sao Paulo state’s health secretariat nor Brazil’s Health Ministry confirmed whether patients who died from COVID-19 at Prevent Senior facilities factored into the nation’s death toll, which is the world’s second highest at more than 600,000.

Like Urbaez, many say the revelations from Prevent Senior reflect what is going on elsewhere. Similar allegations have emerged regarding Hapvida, the nation’s third-largest healthcare provider, with almost 5 million clients.

The major newspaper O Globo published messages indicating Hapvida directors pressured doctors to prescribe hydroxychloroquine as recently as January. Several doctors confirmed this to the paper, without revealing their names.

Felipe Peixoto Nobre, a former Hapvida doctor in Ceara state, told television station Globo that he was red-flagged for not prescribing the COVID kit, and was told he ran the risk of being fired if his refusal continued.

Hapvida said in a statement to the AP that, at the start of the pandemic, hydroxychloroquine was understood to be beneficial and “there was significant adherence in our network,” but that it never amounted to the majority of prescriptions. It said it no longer recommends hydroxychloroquine “because there is no scientific proof of its effectiveness.”

The government regulator of private health care plans said in a statement to the AP it is investigating Hapvida, Prevent Senior and another provider, Unimed Fortaleza. Sao Paulo’s medical council also told the AP it is investigating Prevent Senior.

Meanwhile, the Senate committee aims to release its final report within two weeks and some lawmakers have already signaled they want to make an example of Prevent Senior.

Sen. Renan Calheiros, who is assigned to write the committee report, said in an interview, “Prevent Senior is the most shocking case investigated by this committee from a humanitarian and civilizational perspective,” and accused it of giving some patients medicine without their consent. “This isn’t a health care plan, but an operator of death stimulated by the president of the republic.” ___ AP journalists Tatiana Pollastri and Mauricio Savarese contributed from Sao Paulo
Study confirms rise in child abuse during COVID-19 pandemic

By Denise Mann, HealthDay News

Physical abuse of school-aged kids tripled during the early months of the pandemic when widespread stay-at-home orders were in effect, a new study finds.

Exactly what triggered the surge is not fully understood, but other studies have also reported similar upticks in child abuse. A pediatrician who was not involved in the new research suspects COVID-19 and pandemic-related stresses created a "perfect storm" for abuse.

"Stressful situations can be a trigger for poor judgment and impulsive reactions," said Dr. Allison Jackson, division chief of the Child and Adolescent Protection Center at Children's National Hospital in Washington, D.C.

"There was a great deal of economic stress, job insecurity, and loss of housing potential during this time frame along with the closing of schools, which can be a reprieve for parents and kids," Jackson said.

For the study, researchers analyzed data on more than 39,000 children treated at nine pediatric trauma centers between March and September of last year. Of these, 2,064 were victims of suspected child abuse.

Among children aged 5 and older, the number of child abuse victims tripled to 103, up from an average of 36 during a similar period before the pandemic, the study found.

Researchers said a greater proportion of older children reported abuse after stay-at-home orders went into effect last year.

"The most common injury identified was head injury, followed by a mix of chest, abdomen, extremity and burn injuries," said senior study author Dr. Katherine Flynn-O'Brien, associate trauma medical director at Children's Wisconsin in Milwaukee.

The overarching public health message is clear, she said.

"Systemic safeguards such as social services that help families, particularly those least resourced and most vulnerable, should be considered essential during a national crisis," Flynn-O'Brien said.

The findings are to be presented Saturday at an online meeting of the American Academy of Pediatrics. Findings presented at meetings are typically considered preliminary until published in a peer-reviewed journal.

Dr. Andrea Asnes is a leader of the AAP Council on Child Abuse and Neglect and director of Yale Programs for Safety, Advocacy and Healing in New Haven, Conn.

Despite the rise in abuse of school-aged children, she pointed out that other studies have found no increase in abuse of younger children during this same time frame.

"Daycare centers for little kids were considered essential and remained open, which allowed some families to function, but older kids were stuck at home," she explained.

Unfortunately, the new study may just be the tip of the iceberg when it comes to child abuse in older kids during the pandemic, she added.

"The vast majority of child physical abuse is not managed in the hospital," said Asnes, who was not involved in the study. "Older kids who get punched or beaten with a belt don't always require medical care, so it's certainly possible that more abuse could have gone undetected."

Jackson also noted that these older children weren't going to school or seeing other adults who might have noticed and reported the abuse.

"The onus is usually on the bystander to report child abuse," she added.

The hope is that with the world is opening up and schools again in session, rates of child abuse will decrease, Jackson said.

"We are seeing a decrease back to baseline levels in my practice," she added.More information

Learn how you can help if you suspect a child is being abused at ChildCare.gov.

Copyright © 2021 HealthDay. All rights reserved.


More than 140K U.S. children have lost a caregiver to COVID-19

By HealthDay News


In the United States, roughly 1 in 4 COVID-19 deaths has left a child without a caregiver -- either primary or secondary -- according to a new study. File Photo by Sarah Silbiger/UPI | License Photo

It is an excruciating statistic: One in every four COVID-19 deaths in the United States leaves a child without a parent or other caregiver, researchers report.

The analysis of data shows that from April 2020 to July 2021, more than 120,000 children under the age of 18 lost a primary caregiver -- a parent or grandparent who provided housing, basic needs and care -- and about 22,000 lost a secondary caregiver, often grandparents who provided housing, but not most basic needs.

"Children facing orphanhood as a result of COVID-19 is a hidden, global pandemic that has sadly not spared the United States," study author Susan Hillis, a U.S. Centers for Disease Control and Prevention researcher, said in a U.S. National Institutes of Health news release.

Overall, about 1 in 500 children in the United States have become orphans or lost a grandparent caregiver to COVID-19, according to the study published Thursday in the journal Pediatrics.

Children of racial and ethnic minorities accounted for 65% of youngsters who lost a primary caregiver to COVID-19, compared with 35% of white children, even though whites account for 61% of the U.S. population, and people of racial and ethnic minorities represent 39% of the population.

Orphanhood or the death of a primary caregiver due to COVID-19 was experienced by: 1 of every 168 American Indian/Alaska Native children, 1 of every 310 Black children, 1 of every 412 Hispanic children, 1 of every 612 Asian children, and 1 of every 753 White children.

Compared to White children, American Indian/Alaska Native children were 4.5 times more likely to lose a parent or grandparent caregiver, Black children were 2.4 times more likely, and Hispanic children were 1.8 times more likely.

States with large populations -- California, Texas and New York -- had the highest overall numbers of children who lost primary caregivers to COVID-19.

The researchers also found significant racial/ethnic differences between states.

In New Mexico, Texas, and California, 49% to 67% of children who lost a primary caregiver were Hispanic.

In Alabama, Louisiana and Mississippi, 45% to 57% of children who lost a primary caregiver were Black.

American Indian/Alaska Native children who lost a primary caregiver were more common in South Dakota (55%), New Mexico (39%), Montana (38%), Oklahoma (23%), and Arizona (18%).

The fallout from losing a parent is significant for children: It is associated with mental health problems fewer years of school lower self-esteem high-risk sexual behaviors and increased risk of substance abuse, suicide, violence, sexual abuse and exploitation, the researchers noted.

"All of us -- especially our children -- will feel the serious immediate and long-term impact of this problem for generations to come. Addressing the loss that these children have experienced -- and continue to experience -- must be one of our top priorities, and it must be woven into all aspects of our emergency response, both now and in the post-pandemic future," Hillis said.

"The magnitude of young people affected is a sobering reminder of the devastating impact of the past 18 months," said study co-lead researcher Alexandra Blenkinsop, from Imperial College London.

"These findings really highlight those children who have been left most vulnerable by the pandemic, and where additional resources should be directed," Blenkinsop said.More information

The American Academy of Pediatrics has more on childhood grief

Copyright © 2021 HealthDay. All rights reserved. 
Ecuador's legislature to investigate president over Pandora Papers


Issued on: 11/10/2021 - 
Guillermo Lasso is among scores of politicians, businessmen and celebrities who appear in the Pandora Papers 
RODRIGO BUENDIA AFP/File

Quito (AFP)

Ecuador's legislature on Sunday voted to open an investigation into whether President Guillermo Lasso broke the law by keeping assets in tax havens, after the Pandora Papers leaks.

Lasso, Ecuador's first right-wing president in 14 years, is among scores of politicians, businessmen and celebrities who appear in the Pandora Papers, an investigation by an international consortium of journalists that exposed secret offshore accounts.

The probe of Lasso's activity will be conducted by the country's Constitutional Commission within 30 days, the legislature said in a statement.

The investigation is meant to determine whether the 65-year-old president "may have breached" the norm that "prohibits candidates and public officials from having their resources or assets in tax havens," the legislature said.

According to the Pandora Papers, Lasso controlled 14 offshore companies, most of them based in Panama, and closed them after the passage of a law in 2017 that prohibited presidential candidates from having companies in tax havens.

Lasso, who took office in May, has said that years ago he had "legitimate investments in other countries" and that he got rid of them to compete in the presidential election.

© 2021 AFP
Turkey court keeps civil rights activist in jail despite EU pressure

Osman Kavala told an Istanbul court the charges against him "are not based on any evidence." He's spent years in pretrial detention, and was arrested again on separate charges hours after a Turkish court acquitted him.




The ECHR has demanded Turkey free Osman Kavala, after several years in prison without a conviction

A Turkish court on Friday ordered civil society leader Osman Kavala be kept behind bars on charges he said were based on "conspiracy theories," four years after he was imprisoned without conviction.

The Parisian-born businessman and philanthropist faces charges linked to 2013 anti-government protests and a failed military coup in 2016.

The European Court of Human Rights (ECHR) ordered his release in December 2019.
What happened at the hearing?

US and European diplomats attended the trial which included a group of football supporters alleged to have been part of the 2013 protests.

About 35 defendants out of 52 charged in two separate cases combined into one were present in the courtroom.

Kavala was charged with allegedly trying to overthrow the Turkish government and espionage.

He faces a 20-year prison sentence without parole if convicted.

The 64-year-old Kavala himself denied the charges calling them "slanderous" and "an assassination attempt against my dignity."

"It is totally devoid of evidence, just like the accusation of espionage that was fabricated later,'' he told the court.

"What is striking about the charges brought against me is not merely the fact that they are not based on any evidence," he said. "They are allegations of a fantastic nature based on conspiracy theories overstepping the bounds of reason.''

Acquitted over protest, then charged with 'coup' participation instead


At the end of the session, the Istanbul court set a new hearing for November 26, with Kavala ordered to remain behind bars until that date.

European Parliament Turkey rapporteur Nacho Sanchez said Friday's session was "a missed opportunity for authorities to respect their international commitments."

Turkey risks sanctions, potentially even exclusion, from the 47-member Council of Europe when it next meets on November 30 unless Kavala has been released.

Human rights groups and some Western governments see his detention as part of President Recep Tayyip Erdogan's crackdown on dissent.

Kavala was originally cleared in February 2020 of being part of nationwide demonstrations that started at Istanbul's Gezi Park in 2013.

But he was immediately re-arrested for supposedly supporting the 2016 coup attempt which Turkey blames on US-based Muslim cleric Fethullah Gulen.An appeals court later overturned the Gezi Park acquittals, setting the stage for Friday's trial.

Mass arrests were common in the aftermath of the Gezi protests, and even more so in the months and years following the supposed coup attempt, when Turkey jailed almost 80,000 alleged Gulen supporters and suspended or sacked around 150,000 public sector workers accused of ties to the group.

A recent US State Department report singled out suspicious deaths of persons in custody, forced disappearances, torture and arbitrary arrests as NATO member Turkey's most pressing human rights issues.



Turkish authorities have hit hard on dissidents after the failed coup of July 2016

jc/msh (Reuters, AP, AFP)

The unknown consequences of plastic’s legacy, found in seabirds around the world


Peer-Reviewed Publication

TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY

Bioaccumulation of additives from ingested plastics in seabirds' preen gland oil 

IMAGE: PHOTO : GREAT SHEARWATER AND INGESTED PLASTICS TAKEN BY PETER RYAN view more 

CREDIT: HIDESHIGE TAKADA/ TUAT

Seabirds from Gough Island in the south Atlantic, Marion Island near Antarctica and the coasts of both Hawaii and Western Australia have a dangerous habit: eating plastic. Across 32 species of seabirds sampled from around the globe, an international team from 18 institutions in seven countries found that up to 52 % of the birds not only ate plastic, but also accumulated the plastic’s chemical components in their bodies.

The researchers published their results on October 11th, 2021 in Environmental Monitoring and Contaminants Research.

“Globally, approximately 400 million metric tons of plastics are produced each year, and a portion of these escape into the environment, eventually find their way into the oceans,” said corresponding author Hideshige Takada, professor in the Laboratory of Organic Geochemistry (LOG), Tokyo University of Agriculture and Technology. “When floating on the sea surface or stranded on beaches, plastics are exposed to UV radiation from the sun and break down into smaller fragments.”

These fragments, as well as resin pellets used as plastic feedstock that also make their way into the waterways, are not biodegradable nor do they sink. They are similar in size to seabirds’ natural prey of small fish and insects, and they are light enough to float or move with the currents.

“Consequently, huge amounts of plastics are available to a suite of consumers in the world’s oceans,” Takada said. “As of 2020, 180 species of seabirds, corresponding to half of the total species of seabirds around the globe, have been reported to have ingested plastics. It has also been predicted that by 2050, 99% of seabird species will have ingested plastics.”

While eating plastic can cause physical damage and be a direct cause for seabird death, according to Takada, little is known about the biological consequences of consuming the chemicals added to bind, stabilize or otherwise improve plastic used in food packing, fishing gear and more.

“It was believed that additives are not easily available for leaching or accumulation in biological tissues as they are kneaded into the polymer matrix during plastic production,” Takada said. “However, it has been demonstrated that oily components in digestive fluids can act as organic solvents to facilitate additive leaching.”

As a result, Takada said, plastic additives can be accumulated in seabirds’ tissue.  

“In this study, we aimed to understand the spread threat of plastic-mediated accumulation of chemical additives to seabirds on a global basis,” Takada said.

CAPTION

World seabirds accumulation plastic additives

CREDIT

Hideshige Takada/ TUAT

The researchers analyzed oil from the preen gland, located just above the tail, from 145 seabirds in 16 different locations around the world. By examining the chemical concentrations in this oil, the researchers can determine the contaminant burden of the bird’s internal fat stores. They procured the oil by wiping the gland, which can be done without harm to the bird. They also examined the preen gland oil and stomach contents of 54 bird carcasses found on the beaches.

The researchers found one additive accumulated in 16 of the birds, and other additives in 67 of the birds. 

“High concentrations of additives were detected in seabirds that also contained large, ingested plastic loads,” Takada said, noting that the birds could also receive additives initially ingested by their natural prey, these occurrence patterns suggest that additives are derived mainly from directly ingested plastics. “The detection additives demonstrated that significant portions of the world’s seabirds — 10 to 30% — are likely the accumulate chemicals directly from ingesting plastics, but the health consequences of this are not fully understood.”

The researchers plan to further explore the biological effects of the accumulated additives in seabirds.

Other contributors include first author Rei Yamashita, Nagako Hiki, Fumika Kashiwada and Kaoruko Mizukawa, LOG, Tokyo University of Agriculture and Technology, Japan; Britta Denise Hardesty and Lauren Roman, CSIRO Oceans and Atmosphere, Australia; David Hyrenbach, Marine Science Programs at Oceanic Institute, Hawaii Pacific University, United States; Peter G. Ryan and Ben Dilley, FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, South Africa; Juan Pablo Muñoz-Pérez and Carlos A. Valle, Colegio de Ciencias Biológicas y Ambientales COCIBA and Galápagos Science Center GSC, Universidad San Francisco de Quito USFQ, Ecuador; Christopher K. Pham, OKEANOS R&D Centre, University of the Azores, Portugal; João Frias, Marine and Freshwater Research Centre (MFRC), Galway-Mayo Institute of Technology, Ireland; Bungo Nishizawa, Akinori Takahashi, Jean-Baptiste Thiebot, Nobuo Kokubun, Yuuki Y. Watanabe and Kozue Shiomi, National Institute of Polar Research, Japan; Alexis Will, Institute of Arctic Biology, University of Alaska Fairbanks, United States;  Takashi Yamamoto, Graduate School of Environmental Studies, Nagoya University, Japan; Ui Shimabukuro, Department of Polar Science, The Graduate University for Advanced Studies (SOKENDAI), Japan; and Yutaka Watanuki, Faculty of Fisheries Sciences, Hokkaido University, Japan. The following researchers have secondary affiliations: Yamashita, Atmosphere and Ocean Research Institute, The University of Tokyo, Japan; Hardesty, Centre for Marine Sociology, University of Tasmania, Australia; Roman, Institute for Marine and Antarctic Studies, University of Tasmania, Australia; Muñoz-Pérez, Faculty of Science and Engineering, University of the Sunshine Coast, Australia; Shiomi, Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Japan; and Yamamoto, Meiji Institute for Advanced Study of Mathematical Sciences, Organization for the Strategic Coordination of Research and Intellectual Properties, Meiji University, Japan.

The Ministry of Education, Culture, Sports, Science and Technology of Japan supported this research.

##

For information about the Takada laboratory, please visit http://pelletwatch.org

Original publication

https://doi.org/10.5985/emcr.20210009

Environmental Monitoring and Contaminants Research Vol.1, pp. 97–112, 2021

 

About Tokyo University of Agriculture and Technology

TUAT is a distinguished university in Japan dedicated to science and technology. TUAT focuses on agriculture and engineering that form the foundation of industry, and promotes education and research fields that incorporate them. Boasting a history of over 140 years since our founding in 1874, TUAT continues to boldly take on new challenges and steadily promote fields. With high ethics, TUAT fulfills social responsibility in the capacity of transmitting science and technology information towards the construction of a sustainable society where both human beings and nature can thrive in a symbiotic relationship. For more information, please visit http://www.tuat.ac.jp/en/.

Contact

Hideshige Takada, Ph.D.
Professor,
Laboratory of Organic Geochemistry (LOG),
Tokyo University of Agriculture and Technology, Japan
e-mail: shige@cc.tuat.ac.jp

Epigenetics, the misunderstood science that could shed new light on ageing

Illustration by Philip Lay.

The study of the epigenome came with claims that trauma could be inherited, but now researchers are more excited about its potential to measure the risk of disease


Laura Spinney
Sun 10 Oct 2021

Alittle over a decade ago, a clutch of scientific studies was published that seemed to show that survivors of atrocities or disasters such as the Holocaust and the Dutch famine of 1944-45 had passed on the biological scars of those traumatic experiences to their children.

The studies caused a sensation, earning their own BBC Horizon documentary and the cover of Time (I also wrote about them, for New Scientist) – and no wonder. The mind-blowing implications were that DNA wasn’t the only mode of biological inheritance, and that traits acquired by a person in their lifetime could be heritable. Since we receive our full complement of genes at conception and it remains essentially unchanged until our death, this information was thought to be transmitted via chemical tags on genes called “epigenetic marks” that dial those genes’ output up or down. The phenomenon, known as transgenerational epigenetic inheritance, caught the public imagination, in part because it seemed to release us from the tyranny of DNA. Genetic determinism was dead.


A decade on, the case for transgenerational epigenetic inheritance in humans has crumbled. Scientists know that it happens in plants, and – weakly – in some mammals. They can’t rule it out in people, because it’s difficult to rule anything out in science, but there is no convincing evidence for it to date and no known physiological mechanism by which it could work. One well documented finding alone seems to present a towering obstacle to it: except in very rare genetic disorders, all epigenetic marks are erased from the genetic material of a human egg and sperm soon after their nuclei fuse during fertilisation. “The [epigenetic] patterns are established anew in each generation,” says geneticist Bernhard Horsthemke of the University of Duisburg-Essen in Germany.
The study of epigenetics seems to reinforce the case that it’s not nature versus nurture, but nature plus nurture

Even at the time, sceptics pointed out that it was fiendishly difficult to disentangle the genetic, epigenetic and environmental contributions to inherited traits. For one thing, a person shares her mother’s environment from the womb on, so that person’s epigenome could come to resemble her mother’s without any information being transmitted via the germline, or reproductive cells. In the past decade, the threads have become even more tangled, because it turns out that epigenetic marks are themselves largely under genetic control. Some genes influence the degree to which other genes are annotated – and this shows up in twin studies, where certain epigenetic patterns have been found to be more similar in identical twins that in non-identical ones.

This has led researchers to think of the epigenome less as the language in which the environment commands the genes, and more as a way in which the genes adjust themselves to respond better to an unpredictable environment. “Epigenetics is often presented as being in opposition to genetics, but actually the two things are intertwined,” says Jonathan Mill, an epigeneticist at the University of Exeter. The relationship between them is still being worked out, but for geneticist Adrian Bird of the University of Edinburgh, the role of the environment in shaping the epigenome has been exaggerated. “In fact, cells go to quite a lot of trouble to insulate themselves from environmental insult,” he says.

Whatever that relationship turns out to be, the study of epigenetics seems to reinforce the case that it’s not nature versus nurture, but nature plus nurture (so genetic determinism is still dead). And whatever the contribution of the epigenome, it doesn’t seem to translate across generations.

All the aforementioned researchers rue the fact that transgenerational epigenetic inheritance is still what most people think of when they hear the word epigenetics, because the past decade has also seen exciting advances in the field, in terms of the light it has shed on human health and disease. The marks that accumulate on somatic cells – that is, all the body’s cells except the reproductive ones – turn out to be very informative about these, and new technologies have made it easier to read them.

A model of DNA methylation – the process that modulates genes. The influence of environment or lifestyle on this process is being studied. Photograph: Laguna Design/Science Photo Library

Different people define epigenetics differently, which is another reason why the field is misunderstood. Some define it as modifications to chromatin, the package that contains DNA inside the nuclei of human cells, while others include modifications to RNA. DNA is modified by the addition of chemical groups. Methylation, when a methyl group is added, is the form of DNA modification that has been studied most, but DNA can also be tagged with hydroxymethyl groups, and proteins in the chromatin complex can be modified too.

Researchers can generate genome-wide maps of DNA methylation and use these to track biological ageing, which as everyone knows is not the same as chronological ageing. The first such “epigenetic clocks” were established for blood, and showed strong associations with other measures of blood ageing such as blood pressure and lipid levels. But the epigenetic signature of ageing is different in different tissues, so these couldn’t tell you much about, say, brain or liver. The past five years have seen the description of many more tissue-specific epigenetic clocks.

Mill’s group is working on a brain clock, for example, that he hopes will correlate with other indicators of ageing in the cortex. He has already identified what he believes to be an epigenetic signature of neurodegenerative disease. “We’re able to show robust differences in DNA methylation between individuals with and without dementia, that are very strongly related to the amount of pathology they have in their brains,” Mill says. It’s not yet possible to say whether those differences are a cause or consequence of the pathology, but they provide information about the mechanisms and genes that are disrupted in the disease process, that could guide the development of novel diagnostic tests and treatments. If a signal could be found in the blood, say, that correlated with the brain signal they’ve detected, it could form the basis of a predictive blood test for dementia.

Details about smoking habits can be detected from the epigenome – researchers are working on a clinical application for these observations. 
Photograph: Chris Rout/Alamy

While Bird and others argue that the epigenome is predominantly under genetic control, some researchers are interested in the trace that certain environmental insults leave there. Smoking, for example, has a clear epigenetic signature. “I could tell you quite accurately, based on their DNA methylation profile, if someone was a smoker or not, and probably how much they smoked and how long they had smoked for,” says Mill.

James Flanagan of Imperial College London is among those who are exploiting this aspect of the epigenome to try to understand how lifestyle factors such as smoking, alcohol and obesity shape cancer risk. Indeed, cancer is the area where there is most excitement in terms of the clinical application of epigenetics. One idea, Flanagan says, is that once informed of their risk a person could make lifestyle adjustments to reduce it.

Drugs that remodel the epigenome have been used therapeutically in those already diagnosed with cancer, though they tend to have bad side-effects because their epigenetic impact is so broad. Other widely prescribed drugs that have few side-effects might turn out to work at least partly via the epigenome too. Based on the striking observation that breast cancer risk is more than halved in diabetes patients who have taken the diabetes drug metformin for a long time, Flanagan’s group is investigating whether this protective effect is mediated by altered epigenetic patterns.

Meanwhile, the US-based company Grail – which has just been bought, controversially, by DNA sequencing giant Illumina – has come up with a test for more than 50 cancers that detects altered methylation patterns in DNA circulating freely in the blood.

Last month the NHS launched a trial of Grail’s Galleri blood test, designed to detect epigenetic modifications that identify more than 50 types of cancer. 
Photograph: Grail

Based on publicly available data on its false-positive and false-negative rates, the Grail test looks very promising, says Tomasz K Wojdacz, who studies clinical epigenetics at the Pomeranian Medical University in Szczecin, Poland. But more data is needed and is being collected now in a major clinical trial in the NHS. The idea is that the test would be used to screen populations, identifying individuals at risk who would then be guided towards more classical diagnostic procedures such as tissue-specific biopsies. It could be a gamechanger in cancer, Wojdacz thinks, but it also raises ethical dilemmas, that will have to be addressed before it is rolled out. “Imagine that someone got a positive result but further investigations revealed nothing,” he says. “You can’t put that kind of psychological burden on a patient.”

The jury is out on whether it’s possible to wind back the epigenetic clock. This question is the subject of serious inquiry, but many researchers worry that as a wave of epigenetic cosmetics hits the market, people are parting with their money on the basis of scientifically unsupported claims. Science has only scratched the surface of the epigenome, says Flanagan. “The speed at which these things happen and the speed at which they might change back is not known.” It might be the fate of every young science to be misunderstood. That’s still true of epidenetics, but it could about to change.

Sequencing the epigenome

Until recently, sequencing the epigenome was a relatively slow and expensive affair. To identify all the methyl tags on the genome, for example, would require two distinct sequencing efforts and a chemical manipulation in between. In the past few years, however, it has become possible to sequence the genome and its methylation pattern simultaneously, halving the cost and doubling the speed.

Oxford Nanopore Technologies, the British company responsible for much of the tracking of the global spread of Covid-19 variants, which floated on the London Stock Exchange last week, offers such a technology. It works by pushing DNA through a nanoscale hole while current passes either side. DNA consists of four bases or letters – A, C, G and T – and because each one has a unique shape in the nanopore it distorts the current in a unique and measurable way. A methylated base has its own distinctive shape, meaning it can be detected as a fifth letter.

The US firm Illumina, which leads the global DNA sequencing market, offers a different technique, and chemist Shankar Balasubramanian of the University of Cambridge has said that his company, Cambridge Epigenetix, will soon announce its own epigenetic sequencing technology – one that could add a sixth letter in the form of hydroxymethyl tags.

Protein modifications still have to be sequenced separately, but some people include RNA modifications in their definition of epigenetics and at least some of these technologies can detect those too – meaning they have the power to generate enormous amounts of new information about how our genetic material is modified in our lifetime. That’s why Ewan Birney who co-directs the European Bioinformatics Institute in Hinxton, Cambridgeshire, and who is a consultant to Oxford Nanopore, says that epigenetic sequencing stands poised to revolutionise science: “We’re opening up an entirely new world.”
Scientists are still puzzling over the mystery of what makes us conscious. 



Clues to consciousness: how dopamine fits into the mystery of what makes us conscious – podcast


October 7, 2021

What’s happening in our brains to create consciousness? In this episode of The Conversation Weekly podcast, we hear from two scientists uncovering clues to this mystery that could help people with severe brain injuries to recover. And the story of how artificial intelligence – and its human helpers – completed Beethoven’s unfinished 10th symphony.

Philosophers have pondered the meaning of consciousness for generations. But for a long time, scientists didn’t pay the question much attention. And as recently as the 1980s, the science of consciousness remained a controversial topic.

That all began to change in the 1990s, and since then neuroscientists and doctors around the world have discovered tantalising clues about what’s going on in our brains to make us conscious – or unconscious.

Emmanual Stamatakis, who leads the cognition and consciousness imaging group at the Division of Anaesthesia, University of Cambridge in the UK, explains how consciousness seems to work along a continuum. At one end are people in a coma, followed by those under anaesthesia and then an alert person with regular levels of consciousness. “In the last ten years or so, we started extending in a different direction,” he says, by exploring how stimulants such as LSD will “I hesitate saying this: increase your consciousness”.

Stamatakis and his colleagues are currently looking at how brain networks are connected to consciousness. He explains the results of their recent study which found the chemical dopamine may play a crucial role.

Read more: Consciousness: how the brain chemical 'dopamine' plays a key role – new research

Other researchers are already testing drugs that boost dopamine levels in patients with severe brain injuries. Leandro Sanz, a medical doctor and PhD candidate in medical sciences at the University of Liège in Belgium, talks to us about a randomised controlled trial he’s working on that is testing if molecules that mimic dopamine – called dopamine agonists – could help these patients recover better. “It’s a very active field because if we find the treatment that even has slight improvements in all the patients, that would be a huge step forward,” says Sanz.

In our second story (30m30), we shift from the power and mystery of the human brain to the power of artificial intelligence to mimic it. On October 10 in Bonn, the Beethoven Orchestra will give the world premiere of Ludwig van Beethoven’s Unfinished 10th symphony. The project came out of a collaboration between computer scientists and musicologists. Ahmed Elgammal, a professor of computer science and director of the Art and AI lab at Rutgers University in New Jersey, who led the artificial intelligence side of the project, tells us how they did it.

Read more: How a team of musicologists and computer scientists completed Beethoven's unfinished 10th Symphony

Plus, Holly Squire, arts and culture editor at The Conversation in the UK, gives us some of her recommended reads from the past week (44m45).

This episode of The Conversation Weekly was produced by Mend Mariwany and Gemma Ware, with sound design by Eloise Stevens. Our theme music is by Neeta Sarl. You can find us on Twitter @TC_Audio, on Instagram at theconversationdotcom or via email on podcast@theconversation.com. You can also sign up to The Conversation’s free daily email here.

Musical extracts from the Beethoven 10th symphony project in this episode from Deutsche Telekom and Beethoven’s 9th symphony via YouTube’s Audio Library.


Authors
Daniel Merino

Assistant Science Editor & Co-Host of The Conversation Weekly Podcast
Gemma Ware

Editor and Co-Host, The Conversation Weekly Podcast

Interviewed
Ahmed Elgammal

Professor, Director of the Art & AI Lab, Rutgers University
Emmanuel A Stamatakis

Lead, Cognition and Consciousness Imaging Group, Division of Anaesthesia, University of Cambridge
Leandro Sanz

PhD Candidate in Medical Sciences, Coma Science Group, University of Liège, Belgium, Université de Liège

Planck, consciousness and quantum theory | Patricia Churchland, Brian Greene, Amanda Gefter & more

Oct 9, 2021




The Institute of Art and Ideas

Patricia Churchland, Brian Greene, Laura Mersini-Houghton and Amanda Gefter discuss whether Max Planck and the consciousness puzzle. 00:10 Introduction
  03:16 Patricia Churchland - Neuroscience  05:12 Amanda Gefter - Quantum Mechanics 
09:39 Laura Mersini-Houghton - The brain as quantum capacitor 

Watch the full debate at https://iai.tv/video/planck-and-the-c... Most of us, scientists included, see physics as an attempt to provide an objective description of the world independent of human subjectivity and consciousness. Yet, Max Planck, the founder of quantum theory, stated as a result of his investigations and experiments: “I regard consciousness as fundamental. I regard matter as derivative from consciousness.” Should we listen to Planck? Can we plausibly see matter as derivative of consciousness? Or does this outlook, as Einstein argued, undermine the very success and objectivity of science and take us back to a world of superstition? #MaxPlanckQuantumTheory

#ConsciousnessMatters #ConsciousnessPuzzle Cosmologist, theoretical physicist Laura Mersini-Houghton, groundbreaking physicist Brian Greene, esteemed physics and philosophy writer Amanda Gefter and eliminative materialism pioneer Patricia Churchland debate Planck and the Consciousness Puzzle. Catherine Heymans hosts. To discover more talks, debates, interviews and academies with the world's leading speakers visit https://iai.tv/subscribe?utm_source=Y... The Institute of Art and Ideas features videos and articles from cutting edge thinkers discussing the ideas that are shaping the world, from metaphysics to string theory, technology to democracy, aesthetics to genetics. Subscribe today! For debates and talks: https://iai.tv For articles: https://iai.tv/articles For courses: https://iai.tv/iai-academy/courses



Anil Seth Finds Consciousness in Life’s Push Against Entropy

How does consciousness arise in mere flesh and blood? To the neuroscientist Anil Seth, our organic bodies are the key to the experience.



In his laboratory at the University of Sussex, the neuroscientist Anil Seth monitors brain activity for clues to the origins of consciousness.
Tom Medwell 
for Quanta Magazine

LONG READ

Dan Falk
Contributing Writer

September 30, 2021

Anil Seth wants to understand how minds work. As a neuroscientist at the University of Sussex in England, Seth has seen firsthand how neurons do what they do — but he knows that the puzzle of consciousness spills over from neuroscience into other branches of science, and even into philosophy.

As he puts it near the start of his new book, Being You: A New Science of Consciousness (available October 19): “Somehow, within each of our brains, the combined activity of billions of neurons, each one a tiny biological machine, is giving rise to a conscious experience. And not just any conscious experience, your conscious experience, right here, right now. How does this happen? Why do we experience life in the first person?”

This puzzle — the mystery of how inanimate matter arranges itself into living beings with self-aware minds and a rich inner life — is what the philosopher David Chalmers called the “hard problem” of consciousness. But the way Seth sees it, Chalmers was overly pessimistic. Yes, it’s a challenge — but we’ve been chipping away at it steadily over the years.

“I always get a little annoyed when I read people saying things like, ‘Chalmers proposed the hard problem 25 years ago’ … and then saying, 25 years later, that ‘we’ve learned nothing about this; we’re still completely in the dark, we’ve made no progress,’” said Seth. “All this is nonsense. We’ve made a huge amount of progress.”

Quanta recently caught up with Seth at his home in Brighton via videoconference. The interview has been condensed and edited for clarity.
Why has this problem of consciousness been so vexing, over the centuries — harder, it seems, than figuring out what’s inside an atom or even how the universe began?

When we think about consciousness or experience, it just doesn’t seem to us to be the sort of thing that admits an explanation in terms of physics and chemistry and biology. There’s a suspicion that scientific explanation — by which I mean broadly materialist, reductive explanations, which have been so successful in other branches of physics and chemistry — just might not be up to the job, because consciousness is intrinsically private.


In this study of “displaced perception” in Seth’s lab, a volunteer wears a virtual reality headset that provides a view of a mannequin’s chest. This setup can trick the brain into “feeling” touches that aren’t on the body.

Tom Medwell for Quanta Magazine

That leap from the physical to the mental is something that philosophers have grappled with for centuries. René Descartes, for example, famously argued that nonhuman animals were akin to machines, while humans had something extra that made consciousness possible. In your book, you mention the work of a less familiar figure, the 18th-century French scholar Julien Offray de La Mettrie. How did his views differ from those of Descartes, and how do they bear on your own work?

La Mettrie is a fascinating character, a polymath type of figure. I think of him as basically taking Descartes’ ideas and extending them to their natural conclusions, by not being worried about what the [Catholic] Church might say. Descartes was always trying to finesse his arguments in order to avoid being burned alive, or otherwise being subject to harsh clerical treatment. Descartes considered nonhuman animals as “beast-machines.” (This is a term I re-appropriate and hope to rehabilitate in my book.) The beast-machine for Descartes was the idea that nonhuman animals were machines made of flesh and blood, lacking the rational, conscious minds that bring humans closer to God.

La Mettrie said, “OK, if animals are flesh-and-blood machines, then humans are animals, too, of a certain sort.” So just as there is a beast-machine, or a bête machine, you also have l’homme machine — “man machine.” He just extended the same basic idea without this artificial division.

How does consciousness play into that picture? How is consciousness related to our nature as living machines, in a way that’s continuous between humans and other animals? In my work — and in the book — I eventually get to the point that consciousness is not there in spite of our nature as flesh-and-blood machines, as Descartes might have said; rather, it’s because of this nature. It is because we are flesh-and-blood living machines that our experiences of the world and of “self” arise.
You’re clearly more drawn to some of the approaches to consciousness that researchers have put forward than others. For example, you seem to support the work that Giulio Tononi and his colleagues at the University of Wisconsin have been doing on “integrated information theory” (IIT). What is integrated information theory, and why do you find it promising?

Well, I find some bits of IIT promising, but not others. The promising bit comes from what Gerald Edelman and Tononi together observed, in the late ’90s, which is that conscious experiences are highly “informative” and always “integrated.”

It is because we are flesh-and-blood living machines that our experiences of the world and of “self” arise.


They meant information in a technical, formal sense — not the informal sense in which reading a newspaper is informative. Rather, conscious experiences are informative because every conscious experience is different from every other experience you ever have had, ever could have, or ever will have. Each one rules out the occurrence of a very, very large repertoire of alternative possible conscious experiences. When I look out of the window right now, I have never experienced this precise visual scene. It’s an experience even more distinctive when combined with all my thoughts, background emotions and so on. And this is what information, in information theory, measures: It’s the reduction of uncertainty among a repertoire of alternative possibilities.

As well as being informative, every conscious experience is also integrated. It’s experienced “all of a piece”: Every conscious scene appears as a unified whole. We don’t experience the colors of objects separately from their shapes, nor do we experience objects independently of whatever else is going on. The many different elements of my conscious experience right now all seem tied together in a fundamental and inescapable way.

So at the level of experience, at the level of phenomenology, consciousness has these two properties that coexist. Well, if that’s the case, then what Tononi and Edelman argued was that the mechanisms that underlie conscious experiences in the brain or in the body should also co-express these properties of information and integration.



Video: The neuroscientist Anil Seth of the University of Sussex discusses the principles, philosophy and experimentation that have brought scientists closer to understanding the phenomenon of consciousness.

Emily Buder/Quanta Magazine; Harry Genge for Quanta Magazine

Then is integrated information theory an attempt to quantify consciousness — to attach numbers to it?

Basically, yes. IIT proposes a quantity called phi which measures both information and integration and which according to the theory is identical to the amount of consciousness associated with a system.

One thing that immediately follows from this is that you have a nice post hoc explanation for certain things we know about consciousness. For instance, that the cerebellum — the “little brain” in the back of our head — doesn’t seem to have much to do with consciousness. That’s just a matter of empirical fact; the cerebellum doesn’t seem much involved. Yet it has three-quarters of all the neurons in the brain. Why isn’t the cerebellum involved? You can make up many reasons. But the IIT reason is a very convincing one: The cerebellum’s wiring is not the right sort of wiring to generate co-expressed information and integration, whereas the cortex is, and the cortex is intimately related to consciousness.

I should also say the parts of IIT that I find less promising are where it claims that integrated information actually is consciousness — that there’s an identity between the two. Among other things, taking this stance makes it almost impossible to measure for any nontrivial system. It also implies that consciousness is sort of everywhere, since many systems, not just brains, can generate integrated information.
You also seem fascinated by Karl Friston’s “free-energy principle.” Can you give a layperson-friendly explanation of what this is, and how it can help us understand minds?

I think the simplest articulation of the free-energy principle is this: Let’s think about living systems — a cell or an organism. A living system maintains itself as separate from its environment. For example, I don’t just dissolve into mush on the floor. It’s an active process: I take energy in, and I maintain myself as a system which maintains its boundaries with the world.

This means that of all the possible states my body could be in — all the possible combinatorial arrangements of my different components — there’s only a very, very small subset of “statistically expected” states that I remain in. My body temperature, for instance, remains in a very small range of temperatures, which is one of the reasons I stay alive. How do I do this? How does the organism do this? Well, it must minimize the uncertainty of the states that it’s in. I have to actively resist the second law of thermodynamics, so I don’t dissipate into all kinds of states.

I think you can tell a rich story about the nature of consciousness and perception while retaining a broadly realist view of the world.

The free-energy principle is not itself a theory about consciousness, but I think it’s very relevant because it provides a way of understanding how and why brains work the way they do, and it links back to the idea that consciousness and life are very tightly related. Very briefly, the idea is that to regulate things like body temperature — and, more generally, to keep the body alive — the brain uses predictive models, because to control something it’s very useful to be able to predict how it will behave. The argument I develop in my book is that all our conscious experiences arise from these predictive models which have their origin in this fundamental biological imperative to keep living.
In your book, you discuss how things become less mysterious as we understand the science behind them better, and you wonder whether the mystery of consciousness might go away more in the manner of the mystery of “heat” or more like the mystery of “life.” Can you expand on that a little bit?

There may be another connection between consciousness and life, but in this case the connection is more historical than literal. Historically, there is a commonality between the apparent mysteries of “life” and of “heat,” which is that both eventually went away — but they went away in different ways.

Let’s take heat first. Some years ago I read this brilliant book called Inventing Temperature by the philosopher and historian of science Hasok Chang. Until then, I had not realized how complicated and rich and convoluted the story of heat and temperature was. Back in the 17th century, efforts to understand the basis of heat depended on ways to measure hotness and coolness — to come up with a scale of temperature and things like thermometers. But how do you build a thermometer until you have a reliable benchmark, a fixed point of temperature? And how do you get a temperature scale until you’ve got a reliable thermometer? It’s a chicken-and-egg problem that was really problematic at the time. But it was managed: People, bit by bit, bootstrapped reliable thermometers into existence.

Once the ability to measure was in place, the story of heat turned out to be a maximally reductive scientific explanation. Previously, people had wondered whether heat was this thing that flowed between objects. Well, it’s not. Heat turns out to be identical to something else — in this case, the mean molecular kinetic energy of atoms or molecules in a substance. That is what heat is.

Life is very different. Nobody measures how “alive” something is; it didn’t get resolved in that way. But people still wondered what the essence of life really was — whether life required some élan vital, this “spark of life.” Well, it does not. The key to unlocking life was to recognize that it is not just one thing. Life is a constellation concept — a cluster of related properties that come together in different ways in different organisms. There’s homeostasis, there’s reproduction, there’s metabolism, and so on. With life there are also gray areas, things that from some perspectives we would describe as being alive, and from others not — like viruses and oil droplets, and now synthetic organisms. But by accounting for its diverse properties, the suspicion that we still needed an élan vital, a spark of life — some sort of vitalistic resonance — to explain it went away. The problem of life wasn’t solved; it was “dissolved.”


“The free-energy principle is not itself a theory about consciousness,” Seth said, “but I think it’s very relevant because it provides a way of understanding how and why brains work the way they do.”
Harry Genge for Quanta Magazine


Which of these two ways do you suppose the puzzle of consciousness will play out?

Let’s be optimistic and say that this problem, consciousness, will go away too. We’ll look back in 50 years or 500 years, and we’ll say, “Oh, yeah, we understand now.” Will it be a story much like temperature and heat, where we say that consciousness is identical to something else — let’s say, something like integrated information? IIT is in fact the theory that goes most strongly with the temperature analogy. Maybe it will turn out that way, if Giulio [Tononi] is right.

And what if consciousness ends up being more like life?


This, for me, is the more likely outcome. Here, it’s going to be a case of saying consciousness is not this one big, scary mystery, for which we need to find a humdinger eureka moment of a solution. Rather, being conscious, much like being alive, has many different properties that will express in different ways among different people, among different species, among different systems. And by accounting for each of these properties in terms of things happening in brains and bodies, the mystery of consciousness may dissolve too.
You describe perception in your book as a “controlled hallucination.” This gets us into somewhat philosophical territory. How do we decide what’s “real” and what’s an illusion?

I don’t want to be misinterpreted, as I sometimes have — especially from the title of my TED Talk, “Your Brain Hallucinates Your Conscious Reality” — which has led to some people saying, “Go and stand in front of a bus and you’ll revise that opinion.” I don’t need to revise it; that’s already my opinion: Buses will hurt you. At the level of macroscopic, classical physics that we and buses inhabit, buses are real, whether you’re looking at them or not.

I don’t think we should be even trying to build a conscious machine. It’s massively problematic ethically.

But the way we experience “bus-ness” — that which we experience as being [the qualities of] a bus — is different from its objective physical existence. Let’s say the bus is red; now, redness is a mind-dependent property. Maybe bus-ness itself is also a mind-dependent property.

I don’t go all the way to what in philosophy you might call some version of idealism — that everything is a property of the mental. Some people do. This is where I diverge a little bit from people like [the cognitive scientist] Donald Hoffman. We line up in agreeing that perception is an active construction in the brain and that the goal of perception is not to create a veridical, accurate representation of the real world, but is instead geared toward helping the survival prospects of an organism. We see the world not as it is, but as it’s useful for us to do so.

But he goes further, ending up in a kind of panpsychist idealism that some degree of consciousness inheres in everything. I just don’t buy it, frankly, and I don’t think you need to go there. He might be right, but it’s not testable. I think you can tell a rich story about the nature of consciousness and perception while retaining a broadly realist view of the world.

Where do you stand on the question of conscious machines?

I don’t think we should be even trying to build a conscious machine. It’s massively problematic ethically because of the potential to introduce huge forms of artificial suffering into the world. Worse, we might not even recognize it as suffering, because there’s no reason to think that an artificial system having an aversive conscious experience will manifest that fact in a way we can recognize as being aversive. We will suddenly have ethical obligations to systems when we’re not even sure what their moral or ethical status is. We shouldn’t do this without having really laid down some ethical warning lines in advance.

One of the important qualities of consciousness that needs to be accounted for is that it is integrated. “The many different elements of my conscious experience right now all seem tied together in a fundamental and inescapable way,” Seth said.

Tom Medwell for Quanta Magazine


So we shouldn’t build conscious machines — but could we? Does it matter that a conscious machine wouldn’t be biological — that it would have a different “substrate,” as philosophers like to put it?

There’s still, for me, no totally convincing reason to believe that consciousness is either substrate-independent or substrate-dependent — though I do tend toward the latter. There are some things which are obviously substrate-independent. A computer that plays chess is actually playing chess. But a computer simulation of a weather system does not generate actual weather. Weather is substrate-dependent.

Where does consciousness fall? Well, if you believe that consciousness is some form of information processing, then you’re going to say, “Well, you can do it in a computer.” But that’s a position you choose to take — there’s no knock-down evidence for it. I could equally choose the position that says, no, it’s substrate-dependent.
I’m still wondering what would make it substrate-dependent. Living things are made from cells. Is there something special about cells? How are they different from the components of a computer?

This is why I tend toward the substrate-dependent view. This imperative for self-organization and self-preservation in living systems goes all the way down: Every cell within a body maintains its own existence just as the body as a whole does. What’s more, unlike in a computer where you have this sharp distinction between hardware and software — between substrate and what “runs on” that substrate — in life, there isn’t such a sharp divide. Where does the mind-ware stop and the wetware start? There isn’t a clear answer. These, for me, are positive reasons to think that the substrate matters; a system that instantiates conscious experiences might have to be a system that cares about its persistence all the way down into its mechanisms, without some arbitrary cutoff. No, I can’t demonstrate that for certain. But it’s one interesting way in which living systems are different from computers, and it’s a way which helps me understand consciousness as it’s expressed in living systems.

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But conscious or not, you’re worried that our machines will one day seem conscious?


I think the situation we’re much more likely to find ourselves in is living in a world where artificial systems can give the extremely compelling impression that they are conscious, even when they are not. Or where we just have no way of knowing, but the systems will strongly try to convince us that they are.

I just read a wonderful novel, Klara and the Sun, by Kazuo Ishiguro, which is a beautiful articulation of all the ways in which having systems that give the appearance of being conscious can screw with our human psyches and minds. Alex Garland’s film Ex Machina does this beautifully. Westworld does it too. Blade Runner does it. Literature and science fiction have addressed this question, I think, much more deeply than much of AI research has — at least so far.