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Science News Archive July 2025 - Page 23


Page 23 of 54

Stevia leaf extract has potential as anticancer treatment, researchers find

Researchers at Hiroshima University have found that fermenting stevia leaf extract with bacteria kills off pancreatic cancer cells without harming healthy kidney cells. The study identified chlorogenic acid methyl ester as the active anti-cancer compound, which exhibits stronger toxicity to cancer cells than chlorogenic acid alone.

SourceHiroshima University·JournalInternational Journal of Molecular Sciences·DateJul 18, 2025

Trends in physician exit from fee-for-service Medicare

Physician exit from traditional Medicare has increased over time, with exits remaining high even after the pandemic. The findings suggest that multiple factors contribute to physician departures, including the growing burden of new communication methods and demands for clinical documentation.

SourceJAMA Network·JournalJAMA Health Forum·DateJul 18, 2025

UNM study sheds light on major earthquake risk off coast of British Columbia

A new UNM-led study provides conclusive evidence of the Queen Charlotte fault system's seismic hazard, confirming its potential to produce catastrophic events. The research used advanced geophysical tools to map the deep structure of the ocean floor, revealing a fault zone with the potential to generate powerful earthquakes and tsunamis.

SourceUniversity of New Mexico·JournalScience Advances·TypeObservational study·DateJul 18, 2025

Public perception of physicians who use AI

A study on public perception of physicians who use AI found that while effects are relatively small, they may be highly relevant due to the close link between trust in healthcare practitioners and subjective treatment outcomes. The integration of AI in healthcare has sparked certain reservations among the public.

SourceJAMA Network·JournalJAMA Network Open·DateJul 17, 2025

Neanderthals at two nearby caves butchered the same prey in different ways, suggesting local food traditions

Two Neanderthal groups living in Amud and Kebara caves in northern Israel butchered the same prey using similar tools but with distinct patterns of cut-marks on animal bones. These differences could represent cultural food practices such as drying or aging meat before butchering, which were passed down through generations.

SourceThe Hebrew University of Jerusalem·JournalFrontiers in Environmental Archaeology·TypeExperimental study·DateJul 17, 2025

Historical and current population DNA reveals that there are at least 12 species of rocket frogs, three of which are already extinct

Researchers have identified a new genus of frog, Dryadobates, comprising at least 12 species, with three already declared extinct. The study utilized historical DNA analysis to clarify the taxonomic classification of previously single-species frogs, revealing hidden diversity and extinctions in the Atlantic Forest.

SourceFundação de Amparo à Pesquisa do Estado de São Paulo·JournalBulletin of the American Museum of Natural History·DateJul 17, 2025

Animal behavior: Dog TV viewing habits vary by personality

Research found that dog TV viewing habits differ by personality, with excitable dogs more likely to follow on-screen objects and fearful dogs reacting to car horns or doorbells. The study, published in Scientific Reports, suggests that engaging with TV could provide dogs with an enriching experience.

SourceScientific Reports·JournalScientific Reports·TypeObservational study·DateJul 17, 2025

Cannabis use and benign salivary gland neoplasms

A recent study published in JAMA Otolaryngology–Head & Neck Surgery found an association between cannabis use disorder and benign salivary gland tumors. The researchers call for further prospective research to confirm this association and understand the relationship between cannabis use and these tumors.

SourceJAMA Network·JournalJAMA Otolaryngology–Head & Neck Surgery·DateJul 17, 2025

An FDA-backed metric used to determine effectiveness of rectal cancer drugs may be unreliable, says new study

A new study published in JAMA Network Open found no statistical relationship between pathologic complete response (pCR) and overall survival in rectal cancer patients. This challenges the FDA's use of pCR as a surrogate endpoint for drug approval, which may lead to treatments being fast-tracked without evidence of improved long-term su...

SourceTulane University·JournalJAMA Network Open·DateJul 17, 2025

Key factors in sunscreen testing for personalized UV protection

A retrospective analysis of 1036 participants found that lighter skin showed lower unprotected MED values, while winter conditions correlated with greater UV tolerance. The study advocates for lab-specific prediction models to enhance testing precision and optimize UV protection for diverse populations.

SourceKeAi Communications Co., Ltd.·JournalJournal of Dermatologic Science and Cosmetic Technology·TypeObservational study·DateJul 17, 2025

Patients with heart failure and atrial fibrillation undergoing transcatheter mitral edge-to-edge repair for severe mitral regurgitation are at significantly higher risk of death or rehospitalization

A study from Mount Sinai Hospital found that patients with heart failure and atrial fibrillation who undergo mitral edge-to-edge repair have a doubled risk of death or rehospitalization for heart failure compared to those without AF. The researchers recommend aggressive treatment of AF before the procedure to improve outcomes.

SourceThe Mount Sinai Hospital / Mount Sinai School of Medicine·JournalJournal of the American Heart Association·TypeRandomized controlled/clinical trial·DateJul 17, 2025

AI can accelerate search for more effective Alzheimer’s medicines by streamlining clinical trials

Researchers used an AI model to reassess a completed clinical trial for an Alzheimer's disease drug, finding it slowed cognitive decline by 46% in early-stage patients. The AI model predicts patient progression and allows for more precise selection of trial participants, potentially reducing the cost of developing new medicines.

SourceUniversity of Cambridge·JournalNature Communications·DateJul 17, 2025

Electrochemical route allows for the synthesis of giant fullerenes at a lower cost and with less environmental impact

A study by USP and Sapienza Università di Roma researchers has synthesized fullerenes with up to 190 carbon atoms using an electrochemical route. The process involves natural graphite, ethanol, water, and sodium hydroxide under ambient conditions, paving the way for new organic synthesis and technological applications.

SourceFundação de Amparo à Pesquisa do Estado de São Paulo·JournalDiamond and Related Materials·DateJul 17, 2025

Disproportionately more opioids prescribed in poorer areas

A recent study found that people in poorer areas receive three times the prescriptions for opioids than those in wealthier areas, despite a decline in overall opioid use in Canada. The research highlights the persistence of inequalities in healthcare and the need for targeted interventions to mitigate the risks of opioid misuse.

SourceUniversity of Waterloo·JournalDrugs - Real World Outcomes·TypeData/statistical analysis·DateJul 17, 2025