Wednesday, September 03, 2025

 

Close link between street sweeps, overdose and systemic harm: SFU study



Confiscating personal belongings during government-led dismantling of tent cities in Vancouver inflicts immediate harm and further destabilizes people already struggling to meet their basic needs, according to a new study from Simon Fraser University.




Simon Fraser University





Confiscating personal belongings during government-led dismantling of tent cities in Vancouver inflicts immediate harm and further destabilizes people already struggling to meet their basic needs, according to a new study from Simon Fraser University.

Published in the journal Public Healththe study found nearly one in four people experiencing homelessness reported having their personal belongings confiscated by city workers between 2021 and 2023. These confiscations—often part of street sweeps to remove tent cities—were significantly associated with non-fatal overdoses, violent victimization, and barriers to accessing essential services.

“Our data captures a harmful part of the street sweeps experience, which is confiscation of personal belongings,” says Kanna Hayashi, associate health sciences professor at SFU and St. Paul’s Hospital Chair in Substance Use Research. “These sweeps punish people for surviving in the only ways available to them. It’s a public health crisis that endangers lives amidst the ongoing toxic drug crisis.”

The first large-scale quantitative research in Vancouver to examine the frequency and impact of street sweeps, the study analyzed data from 691 participants who were unstably housed and used drugs.

Its findings validate long-standing concerns raised by community organizations such as Our Streets, P.O.W.E.R. and Stop the Sweeps.

“Our study provides the statistical evidence to back up what community groups have been saying all along: street sweeps are implicated in overdose risk and systemic violence,” says Hayashi.

Many lost essential items, including medications and harm reduction supplies. 

“If you’re using opioids and your valuable personal items are confiscated, you may be displaced into riskier environments, and your day-to-day survival will become more challenging. You may use more drugs to cope,” explains Hayashi. “That’s one direct pathway to overdose.” 

The study confirms the dangers of displacement and street sweeps that Our Streets and the broader community have been raising the alarm on for years, says Dave Hamm, Our Streets member and researcher-member with P.O.W.E.R. 

“We have tried it all: peer reviewed research, reports, a federal housing advocate, consultations and meetings, rallies and marches," Hamm says. “If the government won’t change its violent approach, we need people to keep showing up to support our neighbours, because in the end, we keep each other safe.” 

Seizing unhoused people’s personal belongings is a cruel and dangerous practice that raises serious legal concerns, adds Cailtin Shane, staff lawyer at Pivot Legal Society, a non-profit legal advocacy organization in Vancouver's Downtown Eastside. 

“Courts in B.C. have long agreed that displacing people who have nowhere else to go violates their life, liberty, and security rights under the Charter of Rights and Freedoms,” Shane says. “To then confiscate people’s personal belongings only compounds those violations and can be a matter of life or death for people who continue to be pushed to the margins.” 

The long-term solution to ending street sweeps is to expand dignified housing and harm reduction services, says Hayashi. In the meantime, the study suggests emergency responses that could reduce immediate harm, including creating accessible storage services for people living outdoors, and providing documentation when belongings are taken so people can retrieve them. 

“Street sweeps are a costly, ineffective response to inequitable policies,” says Hayashi. “The street may get cleaned up for one day, but it doesn't last because there is nowhere else for people to go. We need to fix the policies that created this crisis—not criminalize its victims.”

For a Plain Language summary of the study, click here.

 

Inaugural editorial of Biochar X: Unleashing the endless potential of biochar and ushering in a new era of global interdisciplinary innovation




Biochar Editorial Office, Shenyang Agricultural University
Inaugural Editorial of Biochar X: unleashing the endless potential of biochar and ushering in a new era of global interdisciplinary innovation 

image: 

Inaugural Editorial of Biochar X: unleashing the endless potential of biochar and ushering in a new era of global interdisciplinary innovation

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Credit: Wenfu Chen, Eilhann E. Kwon, Hailong Wang, Bing Wang & Yanlin Qin





Biochar X is a pioneering open-access, multidisciplinary journal dedicated to advancing the frontiers of biochar science. Designed to transcend traditional boundaries, we provide a dynamic platform for sharing cutting-edge fundamental discoveries and innovative applications in this rapidly evolving field.

Broad, Impactful Scope:

We welcome high-quality research across all domains of biochar science, including:

✅Energy Development, Storage & Industry (batteries, composites, electronics, metallurgy)

✅Health, Food & Medical Care (human/animal health, food safety, pharmaceuticals)

✅Building & Construction (sustainable materials, indoor climate, radiation protection)

✅Societal & Policy Implications (economics, regulations, public acceptance)

✅Agriculture, Environmental Remediation, Fire Safety & Production Technologies

Publish for Free (2025–2027!):

Biochar X offers full APC waivers for all accepted articles during 2025–2027! As an open-access journal, your work will reach a global audience without financial barriers.

Submit Today – Our Platform is Open!

Biochar X’s submission portal is newly launched and actively accepting manuscripts. Join our inaugural issues and showcase your research on a globally accessible stage.

Visit & Submit: https://www.maxapress.com/bchax

Article Types: Reviews, Original Research, Rapid Reports, Perspectives, Commentaries, and Correspondence.

Read the inaugural editorial here: https://www.maxapress.com/article/doi/10.48130/bchax-0025-0002 

 

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Proboscis monkeys' big noses boost vocal identity



Study links nose size to individual vocal characteristics, offering insights into evolution of communication.



The University of Osaka

Fig. 1 

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Proboscis monkeys

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Credit: Ikki Matsuda





Osaka, Japan – The prominent noses of male proboscis monkeys, long thought to be visual signals, play a crucial role in vocal communication, enhancing individual identity. A new study published in the Journal of the Royal Society Interface reveals how these unusual nasal appendages shape the monkeys' calls, offering insights into the evolution of vocal individuality.

Researchers from The University of Osaka, Ritsumeikan University, and Kyoto University collaborated with the Yokohama Zoo Zoorasia to conduct CT scans on preserved proboscis monkey specimens. These scans allowed them to create detailed 3D digital models of the nasal passages. Using computational simulation, the team determined the nose's "transfer function," which describes how sound frequencies are amplified or dampened as they pass through the nasal cavity. These simulations revealed that the large nose of adult male proboscis monkeys significantly affects the formants, or resonant frequencies, of their calls, creating distinct vocal signatures. These findings were further validated through acoustic measurements on physical replicas of the nasal passages.

Understanding how physical characteristics influence vocalizations contributes to broader evolutionary studies of communication. This research sheds light on the development of individual vocal identity not only in proboscis monkeys but also in other species, including humans. By deciphering the acoustic effects of the proboscis monkey's nose, scientists gain a deeper understanding of the complex interplay between anatomy, acoustics, and social behavior in the animal kingdom.

Professor Takeshi Nishimura commented, "This research, a unique collaboration between a zoo dedicated to rare species conservation, primatologists, and engineers, yielded unexpected results. We are delighted to have uncovered findings that link physical characteristics to vocal communication and social evolution. We are excited about the future prospects of this research."

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The article, “Individual vocal identity is enhanced by the enlarged external nose in male proboscis monkeys (Nasalis larvatus),” was published in Journal of the Royal Society Interface at DOI: https://doi.org/10.6084/m9.figshare.c.7942830

About The University of Osaka

The University of Osaka was founded in 1931 as one of the seven imperial universities of Japan and is now one of Japan's leading comprehensive universities with a broad disciplinary spectrum. This strength is coupled with a singular drive for innovation that extends throughout the scientific process, from fundamental research to the creation of applied technology with positive economic impacts. Its commitment to innovation has been recognized in Japan and around the world. Now, The University of Osaka is leveraging its role as a Designated National University Corporation selected by the Ministry of Education, Culture, Sports, Science and Technology to contribute to innovation for human welfare, sustainable development of society, and social transformation.

Website: https://resou.osaka-u.ac.jp/en


Nasal passage within the head and external nose

Credit

Ikki Matsuda


Formants estimated by morphing the nasal passage from juvenile Niko to adult Jaka.

Credit

Tomoki Yoshitani et al., 2025, Individual vocal identity is enhanced by the enlarged external nose in male proboscis monkeys (Nasalis larvatus), Journal of the Royal Society Interface

 

Teens who lose teeth to decay and injury nearly twice as likely to be bullied, study reveals



Children from lower socioeconomic backgrounds more likely to have untreated dental decay




University of Sydney




Adolescents who lose teeth due to decay or trauma are 42 percent more likely to be bullied, according to new collaborative research from the University of Sydney and the University of Melbourne. 

 

Published in JDR Clinical & Translational Researchthe paper analysed data from 4400 children in The Longitudinal Study of Australian Children, following their health outcomes from childhood (eight- to nine-year-olds) to adolescence (14- to 15-year-olds). 

 

Senior author Associate Professor Ankur Singh, Chair of Lifespan and Oral Health at the School of Dentistryand member of the Charles Perkins Centre said: “Tooth loss isn’t only a dental issue, it’s a social one too. For teenagers, it can have significant psychological impacts at a crucial time in their development.”

 

Around 10 percent of children in Australia have lost teeth through decay or injury, with children from lower socioeconomic backgrounds, as well as rural or remote areas, the most likely to have experienced tooth loss. 

 

“Poor oral health impacts nutrition, sleep, self-confidence and overall wellbeing, as well as being linked to heart disease and high blood pressure. To address these issues, the government needs to invest in prevention programs tackling oral and improve equitable access to dental care, especially in rural and remote areas and in low-income communities,” Associate Professor Singh said. 

 

Recent research suggests that bullying is widespread, with 70 percent of children aged 12-13 experiencing at least one incident of bullying a year. 

 

Within Australia, 28 percent of year eight students (aged 12 to 13) said they were bullied every month, with 8 percent saying they were bullied every week. 

 

First author Yuxi Li, PhD candidate at the University of Melbourne, said: “Anyone who has been bullied at school can testify to what an awful experience it can be. 

 

“As well poor psychological outcomes, bullying can also have adverse physical outcomes such as overweight and obesity. 

 

“We hope that this study will raise awareness about the link between oral health, bullying and young people’s overall wellbeing.”

 

Does an individual’s sex affect the course of bipolar disorder and schizophrenia?




Wiley





Schizophrenia and bipolar disorder are serious mental illnesses that affect both males and females, but research in Acta Psychiatrica Scandinavica indicates that sex may influence the characteristics and course of these conditions.

The research included 1,516 individuals from the multicenter PsyCourse Study: 543 with bipolar disorder, 517 with schizophrenia, and 456 healthy controls.

Several differences between groups and sexes were identified in age at diagnosis, age at treatment, illness duration, illicit drug use, and smoking. For example, females in the schizophrenia group were older than males at first outpatient treatment compared with females in the bipolar disorder group. Moreover, those who were older at first outpatient treatment presented a longer duration of illness. Regarding substance use, the highest rates were observed in males with schizophrenia. People with bipolar disorder showed better functioning and neurocognitive performance than those with schizophrenia. Among individuals with bipolar disorder, females reported better performance in verbal memory and psychomotor speed than males. Both females and males with serious mental illnesses showed higher rates of thyroid alterations than healthy controls.

“Our findings reveal a clear message: sex-sensitive treatment is essential for improving clinical outcomes, promoting healthy habits, and managing comorbidities,” said corresponding author Anabel Martinez-Arán, PhD, of the Hospital Clinic of Barcelona.

URL upon publication: https://onlinelibrary.wiley.com/doi/10.1111/acps.70026

 

Additional Information
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 The information contained in this release is protected by copyright. Please include journal attribution in all coverage. For more information or to obtain a PDF of any study, please contact: Sara Henning-Stout, newsroom@wiley.com.

About the Journal
Acta Psychiatrica Scandinavica is an international forum for the dissemination of information advancing the science and practice of psychiatry. We predominantly focus on clinical psychiatry however with the growing interest of translational psychiatry to our readers, we welcome submission of manuscripts based on both clinical and more translational (e.g. preclinical and epidemiological) research. Publishing highly sought content we’re a 15% ISI-ranked Psychiatry journal with a broad global appeal.

About Wiley
Wiley is a global leader in authoritative content, data-driven insights, and knowledge services that advance science and learning. For more than 200 years, we’ve empowered researchers, learners and institutions worldwide to drive progress and solve the world’s most pressing challenges. Visit us at Wiley.com and Investors.Wiley.com. Follow us on FacebookXLinkedIn and Instagram.