Wednesday, September 24, 2025

 

Pairing up for health care visits helps most older adults who have tried it, poll finds



In the past year, 38% of people over 50 have had a spouse or other adult at their health care appointment, and 34% have done the same for someone over 50




Michigan Medicine - University of Michigan

Impacts of bringing someone to medical appointment 

image: 

Data from the National Poll on Healthy Aging survey of people over age 50, showing data from those who had brought someone to a health care appointment in the past year. 

view more 

Credit: University of Michigan





The visitor chairs in America’s health care clinics are getting put to good use, according to a new poll of older adults.

In the last year, 38% of people age 50 and over said another adult attended at least one of their health care appointments, including 4% who said someone attended a telehealth appointment with them. And 34% have accompanied another person over 50 to at least one appointment, including 4% who attended another older adult’s telehealth visit, according to new findings from the University of Michigan National Poll on Healthy Aging.

The vast majority of these older adults said that having someone at their health care appointment (referred to as a “health care companion”) was helpful. In all, 92% of those who had a health care companion at an appointment said it was helpful. So did 99% of those who had acted as health care companion to someone else.

Health care companions helped ask questions of the doctor or other health care provider, and helped patients understand and follow up on the advice they received. Additional assistance included helping with transportation, providing emotional support, and meeting mobility needs.

The poll finds that 92% of all adults age 50 and over had at least one health care appointment in the last year. That suggests ample opportunity for more support from others during appointments, if older adults and health care providers understand the potential benefits.

The poll is based at the U-M Institute for Healthcare Policy and Innovation, and supported by Michigan Medicine, U-M’s academic medical center. The poll team also did a Michigan-focused analysis of poll data, with support from the Michigan Health Endowment Fund. Those findings are at https://michmed.org/Q9veZ.

Poll director Jeffrey Kullgren, M.D., M.P.H., M.S., said, “As a primary care physician, my priority is to ensure that my patients and I use our time together well, and that they leave with the information and next steps they need to understand and manage their health conditions. So, if they want to have another person who can support them in the room or as part of a telehealth visit, I welcome it.”

Kullgren, who practices at the VA Ann Arbor Healthcare System and is an associate professor of internal medicine at the U-M Medical School, adds, “When the health care companion is the patient’s caregiver because of cognitive issues or complex medical conditions, this support can be absolutely vital.”

But, he notes, the poll shows that 62% of older adults haven’t opted to bring someone with them to an appointment in person or virtually in the past year.

The poll asked these older adults why they did not have a health care companion at any of their appointments and allowed them to choose multiple reasons. In all, 80% felt they didn’t need help, and 20% preferred to go alone. But 11% said they didn’t want to be a burden, and 6% said they had no one available to go with them.

The results, Kullgren says, suggest that health care clinics and systems could do more to invite patients to bring health care companions to in-person and telehealth appointments, and to optimize their care environments and digital tools so that companions can act as partners in the patient’s care. Health care systems could also offer options to patients who do not have someone to accompany them, but want someone in the appointment with them, such as patient advocates and navigators.

Benefits of health care companions

Among those who brought a health care companion to an in-person or telehealth appointment, 83% said it made them comfortable sharing their health information, and 79% said it helped them follow through on the instructions their health care provider gave them. In all, 76% said it had a positive impact on the quality of care they received.

Those who had acted as a health care companion for another older adult were even more likely to feel their presence had made a difference, with 92% agreeing that it helped the person follow through on instructions and 89% agreeing that it positively impacted the quality of care the person received.

“These findings suggest an untapped resource for helping improve how patients interact with the health care system, especially those with complex health needs,” said Kullgren.

Who’s bringing, or acting as, health care companions?

The most common health care companions were spouses or partners, cited by 71% of people who reported bringing someone to an appointment and 58% of those who went to someone else’s appointment.

Adult children came second, with 20% of older adults who had brought someone to an appointment saying it was their adult child, and 28% of older adults who had gone to an appointment with another older adult saying they had accompanied their parent. Other relatives and friends also occasionally served as health care companions.

Women were less likely than men to have had someone accompany them to at least one appointment. In all, 35% of women over 50 had done so, compared with 42% of men. But women were more likely to have acted as a health care companion to another adult over 50, with 38% saying they’d done so, compared with 30% of men.

People over 50 with self-reported fair or poor physical health, and those with a disability that limits daily activities, were more likely to have had someone at their appointment.  Those over 65 were more likely than those aged 50 to 64 to have had a health care companion.

The poll findings come from a nationally representative survey conducted by NORC at the University of Chicago for IHPI and administered online and via phone in February 2025 among 2,883 adults ages 50 to 97 across the U.S. The sample was subsequently weighted to reflect the U.S. population. Read past National Poll on Healthy Aging reports and about the poll methodology.

 

Visualization of blood flow sharpens artificial heart



Linköping University
Total artificial heart 

image: 

To be able to observe the blood flow in the artificial heart in real time in the MRI, the researchers an Linköping University had to build a full-scale model of the human circulatory system.

view more 

Credit: Emma Busk Winquist






Using magnetic cameras, researchers at Linköping University have examined blood flow in an artificial heart in real time. The results make it possible to design the heart in a way to reduce the risk of blood clots and red blood cells breakdown, a common problem in today’s artificial hearts. The study, published in Scientific Reports, was done in collaboration with the company Scandinavian Real Heart AB, which is developing an artificial heart.

“The heart is a muscle that never rests. It can never rest. The heart can beat for a hundred years without being serviced or stopping even once. But constructing a pump that can function in the same way – that’s a challenge,” says Tino Ebbers, professor of physiology at Linköping University.

Nearly 9,000 heart transplants are performed worldwide per year, and the number keeps increasing. So does the number of people queuing for a new heart, with some 2,800 on the waiting list in the EU alone, and around 3,400 in the US.

Most of the patients whose heart does not work at all are currently connected to a machine that takes care of their blood circulation for them. It is a large device, and the patient is confined to their hospital bed. For those patients, an artificial heart could be an option while waiting for a donor heart. 

“Finding a biologically compatible heart for a transplant can take a long time. In those cases, an artificial heart can enable the patient to wait at home. They may not be running around like Usain Bolt, but patients can be with their loved ones during the waiting period,” says Twan Bakker, PhD student at the Center for Medical Image Science and Visualization, CMIV, at LiU.

For this to happen, the technology needs refining. Blood clots and damaged red blood cells are common problems in artificial hearts with pulsating function. This is often due to areas of high and low blood speed being close to each other, or areas where the blood is stationary in the heart. High speed and turbulence can lead to the destruction of red blood cells, i.e. hemolysis, whereas low speed increases the risk of blood clots.

Minimising the risk of complications requires an in-depth understanding of how blood flows in the artificial heart. Researchers at LiU, in collaboration with the company Scandinavian Real Heart, have therefore used magnetic resonance imaging, often abbreviated as MRI, for real-time observation of the blood flow in a pulsating artificial heart. The results were then compared with the blood flow in a real heart.

“The cool thing about this technology is that it’s possible to look inside a patient, or in this case an artificial heart, without physically opening and checking – this is completely unique,” says Tino Ebbers.

What the researchers could see in the MRI images was that the blood flow in the artificial heart resembled that of a truly healthy heart. Proof that the heart is well-designed. 

Scandinavian Real Heart’s artificial heart was recently granted the designation Humanitarian Use Device (HUD) by the US Food and Drug Administration (FDA). The HUD designation makes it possible to apply for Humanitarian Device Exemption (HDE), an accelerated regulatory framework that may grant the product limited marketing rights. According to the researchers, clinical use is still a couple of years away, as pre-clinical and clinical studies first need to be completed.

“Our dream is to develop an artificial heart as a permanent solution. We’re not there yet, as we’re required to first show that it functions as a bridge to transplantation so as to prevent the patient from dying while waiting for a heart. But our ultimate goal is fantastic, and when we reach it, there will be no need for donor hearts,” says Twan Bakker.


Visualisation of the blood flow in the artificial heart.

Credit

CMIV

 

New peer-reviewed EWG study finds eating some produce hikes pesticide levels in people



EWG also emphasizes fruits and vegetables remain vital to a healthy diet



Environmental Working Group





WASHINGTON – Consuming some types of fruits and vegetables can increase the levels of harmful pesticides detected in people’s bodies, according to a new peer-reviewed study by Environmental Working Group scientists.

Pesticides have been linked to cancer, reproductive harm, hormone disruption and neurotoxicity in children. Residues of these chemicals are often detected on produce, creating exposure concerns for consumers. The new study may help inform future research into how dietary exposure to pesticides through fruit and vegetables might affect human health.

“The findings reinforce that what we eat directly affects the level of pesticides in our bodies,” said Alexis Temkin, Ph.D., vice president for science at EWG and lead author of the study. “Eating produce is essential to a healthy diet, but it can also increase exposure to pesticides.”

Participants who consumed more fruits and vegetables with higher levels of pesticide residues – like strawberries, spinach and bell peppers – had significantly higher levels of pesticides in their urine compared to those who ate mostly produce with lower levels of pesticide residue. These findings highlight how diet is a driver of pesticide exposure and provide a foundation for future research into how that exposure might affect human health over time.

“This study builds on previous work showing that certain fruits and vegetables are a major route of pesticide exposure for millions of Americans,” said Temkin. “Young children and pregnant people are particularly susceptible to the harms from exposure.”

Scoring pesticide exposures

The study was published in the International Journal of Hygiene and Environmental Health.

EWG scientists first collected Department of Agriculture data on pesticide residues in produce from 2013-2018. They combined this with dietary questionnaire responses and urine biomonitoring information from 1,837 participants in the Centers for Disease Control and Prevention’s National Health and Nutrition Examination Survey, or NHANES, from 2015 to 2016. These years reflect the most current data with the broadest range of pesticide tracking. NHANES biomonitoring results are only available through 2018.

Using this data, EWG created a “dietary pesticide exposure score” to estimate people’s exposure based on the fruits and vegetables they ate, and pesticide levels on that produce. Pesticide amounts on produce were determined by how often and how much of each chemical was detected. EWG also factored in the concentration and toxicity of each pesticide.

Scientists then compared the exposure scores to 15 pesticide biomarkers, or indicators, in participant’s urine for three major classes: organophosphates, pyrethroids and neonicotinoids.

The results revealed a clear link between the specific produce people consumed and the levels of these pesticides that were detected in their urine, varying based on what they ate and the pesticides on those fruits and vegetables.

Key findings

Beyond highlighting the link between eating certain produce and increased levels of pesticides in people’s bodies, EWG’s study includes a number of important findings.

  • Diet matters. Eating produce with high pesticide residues is more strongly associated with the chemicals being found in urine compared to low-residue items.
  • Certain pesticide classes need more attention: NHANES currently monitors only a subset of pesticides found in food and identified in the study. Many more pesticides need attention because people are exposed to a wide range of agricultural chemicals.
  • People are exposed to mixtures of pesticides: The study confirms people are exposed to several pesticides at a time. Fruits and vegetables had measurable residues of 178 unique pesticides, but only 42 of those chemicals matched biomarkers in the urine data.
  • Potatoes skew the results. The relationship between produce consumption and pesticide levels in the body was only evident when potatoes were excluded from the analysis. Potato consumption obscured the study’s findings, possibly because people eat potatoes in a variety of ways, which makes it more difficult to accurately estimate pesticide exposure from them. More research is needed into how potatoes influence pesticide exposure in people.

 

Regulatory gaps

While most pesticide research has focused on occupational and residential exposures, EWG’s study shows that everyday food choices can also drive significant pesticide exposure in the general population.

Given the widespread exposure documented in this paper and other studies, serious questions remain about whether current pesticide safety regulations set by the Environmental Protection Agency sufficiently protect public health.

Despite years of research linking low-level pesticide exposure to health risks, the EPA still sets limits for individual pesticides, failing to account for cumulative exposure from mixtures of residues regularly detected on produce samples tested by the USDA.

The study’s authors suggest that their methodology for estimating pesticide exposure from fruits and vegetables could give regulators and other researchers a powerful tool to assess real-world exposures and better safeguard vulnerable populations, particularly children and people who are pregnant.

"This study was only possible thanks to robust federal data, highlighting why strong public health agencies must remain a top priority for policymakers,” said Varun Subramaniam, EWG science analyst.

“The pesticide residue tests and CDC biomonitoring data represent the kind of essential research that only the government can provide – at a scale that no private sector or academic effort could match,” he said.

What consumers can do

EWG urges people to eat plenty of fruits and vegetables, whether grown conventionally or organic.

Switching from conventional produce to organic, which cannot be grown using certain pesticides, has been shown to dramatically reduce pesticide biomarkers in the body within days.

When possible, EWG recommends prioritizing organic purchases for the most contaminated items listed in its Shopper’s Guide to Pesticides in Produce™. The guide features the “Dirty Dozen list of the produce with the highest pesticide residues detected and the “Clean Fifteen list of items with the lowest residues.

###

The Environmental Working Group (EWG) is a nonprofit, non-partisan organization that empowers people to live healthier lives in a healthier environment. Through research, advocacy and unique education tools, EWG drives consumer choice and civic action.

 

Piecing together the puzzle of future solar cell materials




Chalmers University of Technology
Formamidinium lead iodide 

image: 

Formamidinium lead iodide is considered one of the best-performing materials in the halide perovskite group, since it has promising properties for future solar cell technologies. New findings from Chalmers can now shed light on its structure; this is crucial if we are to engineer and control the material.

view more 

Credit: Chalmers





Global electricity use is increasing rapidly and must be addressed sustainably. Developing new materials could give us much more efficient solar cell materials than at present; materials so thin and flexible that they could encase anything from mobile phones or entire buildings. Using computer simulation and machine learning, researchers at Chalmers University of Technology in Sweden have now taken an important step towards understanding and handling halide perovskites, among the most promising but notoriously enigmatic materials.

Electricity use is constantly increasing globally and, according to the International Energy Agency, its proportion of the world’s total energy consumption is expected to exceed 50 per cent in 25 years, compared to the current 20 per cent.

“To meet the demand, there is a significant and growing need for new, environmentally friendly and efficient energy conversion methods, such as more efficient solar cells. Our findings are essential to engineer and control one of the most promising solar cell materials for optimal utilisation. It’s very exciting that we now have simulation methods that can answer questions that were unresolved just a few years ago,” says Julia Wiktor, the study’s principal investigator and an associate professor at Chalmers.

Promising materials for efficient solar cells

Materials lying within a group called halide perovskites are considered the most promising for producing cost-effective, flexible and lightweight solar cells and optoelectronic devices such as LED bulbs, as they absorb and emit light extremely efficiently. However, perovskite materials can degrade quickly and knowing how best to utilise them requires a deeper understanding of why this happens and how the materials work.

Scientists have long struggled to understand one particular material within the group, a crystalline compound called formamidinium lead iodide. It has outstanding optoelectronic properties. Greater use of the material has been hampered by its instability but this can be solved by mixing two types of halide perovskites. However, more knowledge is needed about the two types so that researchers can best control the mixture.

The key to material design and control

A research group at Chalmers can now provide a detailed account of an important phase of the material that has previously been difficult to explain by experiments alone. Understanding this phase is key to being able to design and control both this material and mixtures based on it. The study was recently published in Journal of the American Chemical Society.

“The low-temperature phase of this material has long been a missing piece of the research puzzle and we’ve now settled a fundamental question about the structure of this phase," says Chalmers researcher Sangita Dutta.

Machine learning contributed to the breakthrough

The researchers’ expertise lies in building accurate models of different materials in computer simulations. This allows them to test the materials by exposing them to different scenarios and these are confirmed experimentally.

Nevertheless, modelling materials in the halide perovskite family is tricky, as capturing and decoding their properties requires powerful supercomputers and long simulation times.

“By combining our standard methods with machine learning, we’re now able to run simulations that are thousands of times longer than before. And our models can now contain millions of atoms instead of hundreds, which brings them closer to the real world,” says Dutta.

Lab observations match the simulations

The researchers identified the structure of formamidinium lead iodide at low temperatures. They could also see that the formamidinium molecules get stuck in a semi-stable state while the material cools. To ensure that their study models reflect reality, they collaborated with experimental researchers at the University of Birmingham. They cooled the material to - 200°C to ensure their experiments matched the simulations.

"We hope the insights we’ve gained from the simulations can contribute to how to model and analyse complex halide perovskite materials in the future," says Erik Fransson, at the Department of Physics at Chalmers.

 

More about the research:

The article Revealing the Low Temperature Phase of FAPbI3 using A Machine-Learned Potential was published in Journal of the American Chemical Society on 14th August 2025 and was written by Sangita Dutta, Erik Fransson, Tobias Hainer, Benjamin M. Gallant, Dominik J. Kubicki, Paul Erhart and Julia Wiktor. The researchers are all members of the Department of Physics at Chalmers University of Technology, except for Gallant and Kubicki, who are from the School of Chemistry, University of Birmingham.

The research was supported by the Swedish Foundation for Strategic Research, the Swedish Energy Agency, the Swedish Research Council, the European Research Council, the Knut and Alice Wallenberg Foundation and the Nano Area of Advance at Chalmers University of Technology. The calculations were facilitated by resources from the National Academic Infrastructure for Supercomputing in Sweden (NAISS) at C3SE.

 

Caption: Formamidinium lead iodide is considered one of the best-performing materials in the halide perovskite group, since it has promising properties for future solar cell technologies. New findings from Chalmers can now shed light on its structure; this is crucial if we are to engineer and control the material.

 

For more information, please contact:

Julia Wiktor, Associate Professor, Department of Physics, Chalmers University of Technology, +46 31 772 59 36 julia.wiktor@chalmers.se

Sangita Dutta, Postdoc, Department of Physics, Chalmers University of Technology, sangita.dutta@chalmers.se

 

LITERALLY

Supercritical subsurface fluids open a window into the world



Advanced visualizations and AI reveal how high-pressure fluids influence seismic activity




University of Tokyo

Interpreted 3D seismic characteristics 

image: 

The seal layer, interpreted by looking at data on the supercritical fluid’s movement, appears as a distinct region. It’s disrupted where it meets a fault which makes it appear porous to the fluid, allowing it to migrate upwards, causing seismic vibrations. ©2025 Tsuji et al. CC-BY

view more 

Credit: ©2025 Tsuji et al. CC-BY






Researchers including those from the University of Tokyo build on past studies and introduce new methods to explore the nature and role of subsurface fluids including water in the instances and behaviors of earthquakes and volcanoes. Their study suggests that water, even heavy rainfall, can play a role in or even trigger seismic events. This could potentially lead to better early warning systems. The study improves models of seismic activity and can even help identify optimal sites for drilling to tap sources of supercritical geothermal energy.

As far as is currently known, earthquakes and volcanic eruptions cannot be predicted, certainly not on the timescales with which we expect from typical weather reports. But as physical theories improve, so does the accuracy of statistical models which could be useful for planning, and potentially also early warning systems, which can save lives when disaster does strike. Another benefit of improving such models is that they could help locate areas suitable for tapping into geothermal energy. So, it’s the improvement of theories, based on good observations, that geologists and other researchers strive for. And a recent development in this field has added another factor into the mix which may be more significant than was previously thought.

“Our latest paper using advanced seismic imaging shows, for the first time, how deep volcanic fluids, such as water, in their high-pressure supercritical state, can become trapped, migrate and undergo phase changes that influence earthquakes,” said Professor Takeshi Tsuji from the Graduate School of Engineering at the University of Tokyo. “Applying machine learning to our seismometer data allowed us to map earthquake distribution and mechanism in detail, and to investigate the brittle-ductile transition zone, where rocks change from seismically active to largely inactive. This is a prime area for fluids to accumulate. Unlike earlier low-resolution electromagnetic surveys, our seismic approach revealed these systems in unprecedented three-dimensional detail.”

Supercritical fluids are the key here. They are special because they act like both a liquid and a gas. Due to high pressures and temperatures, they flow easily like gas but with the ability to store and transfer huge amounts of heat like a liquid. This means as they pass through different mediums or a medium with varying conditions, for example a tightly sealed area to one that’s fractured, supercritical fluids can rapidly heat an area changing how it and the magma beneath it behave. And this supercritical fluid is not isolated from the world; it can even be affected by the rain.

“When heavy rain falls, the groundwater level rises, increasing pressure in cracks and faults deep below. If those faults are already close to breaking, this added pressure can trigger earthquakes,” said Tsuji. “In volcanic areas, where the crust is weakened by high-pressure fluids, this effect can be especially strong. Our study clearly showed a correlation between rainfall and seismicity. By imaging magma and understanding how pressure builds up underground, we may improve how we look for early warning signs of eruptions.”

Beyond predicting disasters, though, comes a potentially great benefit: the chance to tap into nearly limitless clean geothermal energy, something a country like Japan is ideally suited to do but has not yet taken the plunge. The project began as a means to find reliable drilling targets to more easily reach the supercritical water reserves necessary for realizing geothermal power use. With their new method, Tsuji and his team were able to identify fluid pathways, reservoirs beneath sealed layers, and the fractures that let fluids escape.

“Underground supercritical water contains vast thermal energy, making it an incredibly promising renewable resource in the future. Importantly, because it is drawn from deep reservoirs, it does not interfere with surface hot spring systems, a major concern for geothermal power in Japan,” said Tsuji. “The main obstacle to widespread use of supercritical geothermal energy is drilling. These fluids exist at great depths under extreme pressure and temperature, so both drilling technology and equipment must be adapted. Even though we can now locate supercritical fluids and their reservoirs, we still need to develop safe and efficient designs for wells to make this energy resource practical.”

###

Journal: Takeshi Tsuji, Rezkia Dewi Andajani, Masafumi Katou, Akio Hara, Naoshi Aoki, Susumu Abe, Hao Kuo-Chen, Zhuo-Kang Guan, Wei-Fang Sun, Sheng-Yan Pan, Yao-Hung Liu, Keigo Kitamura, Jun Nishijima, Haruhiro Inagaki, “Supercritical fluid flow through permeable window and phase transitions at volcanic brittle–ductile transition zone”Communication Earth & Environment, DOI: 10.1038/s43247-025-02774-4


Funding: This study was supported by the New Energy and Industrial Technology Development Organization (NEDO) and was partially supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI program (Grant Numbers JP21H05202, JP22H05108, and JP24H00440).

 

Useful links:

Graduate School of Engineering – https://www.t.u-tokyo.ac.jp/en/

Department of Systems Innovation - https://www.sys.t.u-tokyo.ac.jp/en/?lang=en

The data for this project were gathered in the region of Kuju in Kyushu, western Japan. The map shows sites of volcanoes and the seismometers recording seismic activity and two geothermal power plants, demonstrating there is already appetite for this energy source. ©2025 Tsuji et al. CC-BY

Credit

©2025 Tsuji et al. CC-BY

Credit

©2025 Tsuji et al. CC-BY


Credit

©2025 Tsuji et al. CC-BY