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Aircraft emissions could double air pollution deaths by 2040

Scenario-based modeling projects that aviation-related air pollution could drive a major rise in premature deaths by 2040, mainly through PM2.5 and ozone exposure. The study estimates that aircraft emissions caused 33,900 PM2.5-related deaths and 24,600 ozone-related deaths in 2019, with baseline 2040 deaths projected to more than double.

18 Jun 2026

Gut microbes may help explain why obesity and type 2 diabetes become harder to reverse

This review describes how gut microbial messengers, including SCFAs, microbiota-modified bile acids, neuroactive metabolites, and extracellular vesicles, may shape obesity and type 2 diabetes through the microbiota-gut-brain axis.

17 Jun 2026

Emergency departments could help boost annual flu vaccination rates

A University of California, Riverside-led study of more than 3,200 emergency department (ED) patients across the United States found that while awareness of influenza vaccination is widespread, most adults seen in EDs are not up to date on their annual flu vaccine.

17 Jun 2026

AI diagnostic errors raise hospital blame unless doctors stay deeply involved

A two-study vignette experiment found that people attributed more responsibility to hospitals and were more likely to consider filing a complaint or taking legal action when missed diagnoses involved AI rather than a physician alone. Interactive physician involvement reduced negative reactions, while autonomous or sequential AI-human collaboration did not meaningfully improve responses compared with AI-only diagnosis.

17 Jun 2026

Study links commercial cannabis markets to increased addiction

Removing criminal penalties for possessing cannabis for personal use, or introducing tightly controlled legalisation of cannabis, does not appear to increase levels of cannabis use.

17 Jun 2026

Weight-loss medications lessen the risk of violent criminal behavior

Glucagon-like peptide-1 receptor agonists (GLP-1 RAs) are widely prescribed for diabetes and obesity, but studies have found evidence that the medications may also influence behavior, such as supporting impulse control and reducing substance use and alcohol consumption by potentially interacting with the brain's reward and stress systems.

17 Jun 2026

Resistance training reduces major heart disease risk for active women

Women who lift weights may have a lower risk of major heart disease, especially when combined with aerobic exercise, according to a new study published today in JACC, the flagship journal of the American College of Cardiology.

17 Jun 2026

Sidewalk yeast species could lead to eco-friendly mosquito traps

An orange-colored yeast species isolated from a Baltimore sidewalk several years ago could be the basis of eco-friendly mosquito traps that reduce malaria transmission, according to a new study from researchers at the Johns Hopkins Bloomberg School of Public Health.

17 Jun 2026

Smartphone apps and wearables help heart disease patients stay active

Smartphone apps, fitness trackers and wearable devices help people with heart disease get more physical activity in their daily lives, according to an analysis of previous research published today in the Journal of the American Heart Association, an open-access, peer-reviewed journal of the American Heart Association.

17 Jun 2026

Targeted vaccination strategies strengthen global biosecurity and biosafety

Biosafety prevents biohazard risks to humans and the environment, biosecurity protects biological assets from misuse, and One Health is an interdisciplinary framework uniting human, animal, and environmental health—all core to global health protection.

17 Jun 2026

GLP-1 medications may reduce violent behavior in adults

The use of GLP-1 medications commonly prescribed for weight loss or managing diabetes may have effects that extend beyond metabolic health, including on behaviors linked to violence, according to Rutgers researchers.

17 Jun 2026

Probiotics help reduce depressive symptoms in older adults

In a pilot clinical trial published in the Journal of the American Geriatrics Society that included older adults with depression receiving standard care, adding probiotic therapy produced modest but meaningful reductions in depressive and anxiety symptoms compared with adding a placebo.

17 Jun 2026

US adults are taking more supplements as multivitamins lose ground

A 25-year NHANES analysis of 63,442 US adults found that reported dietary supplement use rose from 51% to 60%, with the largest increases among adults aged 65 years and older. Use shifted away from multivitamin-multimineral products and toward vitamins, minerals, botanicals, and nonvitamin nonmineral supplements marketed for immune, anti-inflammatory, gut, skin, and joint health.

16 Jun 2026

Study shows branding on cannabis products appeals to youth

Unlike cigarettes or alcohol, cannabis products often come packaged as colorful gummies, chocolates, candies and snacks that can look remarkably similar to items found in a grocery store aisle.

16 Jun 2026

Hormone cycles dictate how the brain absorbs neuroprotective drugs

Consider what we ask of a clinical trial. We gather people who differ in nearly every way that matters, we give them the same drug at the same dose, and then we average the result and call the average truth.

16 Jun 2026

Study maps biological pathways of weed killer during pregnancy

Exposure to glyphosate, the active ingredient in many weed killers, was linked to changes in several hormones that support pregnancy and fetal development-in one of the few studies to examine how a widely used herbicide may affect the body during pregnancy. The results come from a new study led by University of Michigan School of Public Health researchers.

16 Jun 2026

Secondhand smoke exposure linked to higher blood cadmium levels

A new study finds that adults who simply breathe in secondhand cigarette smoke have about 1.5 times more of the toxin cadmium in their blood than people in smoke-free environments.

15 Jun 2026

Researchers urge caution over large-scale newborn genome screening

New research from large population studies provides invaluable evidence on genome screening of newborn babies to reduce risks from overdiagnosis.

15 Jun 2026

Persistent anxiety and depression may delay emotional maturity into midlife

A long-running Australian cohort study found that personality traits generally matured from early to middle adulthood, with agreeableness and conscientiousness rising and extraversion, openness, and neuroticism declining. People with persistent common mental disorders showed the clearest decline in neuroticism by midlife, but they still had higher emotional instability than peers without persistent mental health difficulties.

15 Jun 2026

NHS dental costs will hit £5.3 billion as older adults carry the burden

A UK cost-of-illness projection estimates that direct NHS dental treatment costs for adult caries and periodontal disease will rise by 20%, from £4.42 billion in 2020 to £5.30 billion by 2050. The burden shifts strongly toward older adults and severe disease, supporting prevention and earlier intervention as NHS dental planning priorities.

15 Jun 2026