Viral 'kettlebell challenge' could do you more harm than good: Here's why

A new technology that harnesses artificial intelligence (AI) to analyze mammograms and improve the accuracy of predicting a woman's personalized five-year risk of developing breast cancer has received Breakthrough Device designation from the Food and Drug Administration (FDA). Developed by researchers at Washington University School of Medicine in St. Louis, the software has been licensed to Prognosia Inc., a WashU startup company.

The phrase "summer long balls" might sound like locker-room slang, but it's increasingly being mentioned on social media and online forums as a seasonal curiosity. In hot weather, men's scrotums which contain their testicles can appear looser or more pendulous—hence the name.

In a study, patients with irritable bowel syndrome with diarrhea, or IBS-D, who went on a low FODMAP diet saw an improvement of colonic barrier dysfunction, commonly known as "leaky gut."

The microbial community in the human gut plays a central role in various diseases. An important form of chemical communication between the gut microbiome and the human body comes from small molecules produced when bacteria in the digestive system break down food. These include acids such as acetate, propionate, and butyrate. These fermentation products in the gut can regulate the immune system, promote the regeneration of the intestinal mucosa and influence human behavior. Although these effects are known, the daily dose of these molecules to which the human body is exposed was previously unknown.

HAEZI group researchers analyzed the impact on memory exerted by the declaration of a state of alarm due to COVID. From the accuracy and certainty that the respondents revealed in their memories, they concluded that the impact was significant and that to leave a lasting impression an event does not have to be unexpected. They also studied how age influences memories and found that memories become less detailed with the advancing years.

Researchers led by the University of Geneva and École Polytechnique Fédérale de Lausanne report that neural anticipation of virtual infection triggers an immune response through activation of innate lymphoid cells.

Firefighters work hard saving lives, and in the process put their own lives at heightened risk from skin, kidney and other types of cancers, a new American Cancer Society (ACS) study finds.

Health officials have confirmed Wisconsin's first human case of West Nile virus in 2025.

From fetal stages through adolescence, the brain undergoes rapid, layered development—from basic motor skills to complex emotional regulation. Yet this very dynamism, coupled with children's physical and behavioral traits, makes brain imaging extraordinarily difficult. Common conditions like autism spectrum disorder (ASD), Attention-Deficit/Hyperactivity Disorder (ADHD), and perinatal brain injury often leave subtle but critical imprints on early neural architecture.

Children may be more likely to survive a rare, potentially fatal influenza complication if they receive rapid treatment for brain swelling and extreme immune responses, a Stanford Medicine-led report found.

Most U.S. adults have a "heart age" several years older than their chronological age—sometimes by more than a decade. And that gap is wider among men and among those with lower incomes or education or who identify as Black or Hispanic, according to a new study led by Northwestern Medicine.

A new study in Nature shows that delivering a single injection of gene therapy at birth may offer years-long protection against HIV, tapping into a critical window in early life that could reshape the fight against pediatric infections in high-risk regions.

A new study by investigators from Mass General Brigham examined the effects of policies banning flavored e-cigarettes on adults and young people. Investigators found that e-cigarette use significantly declined among young adults and adults in states that had enacted flavor bans relative to states that did not.

Researchers at the University of Colorado Anschutz Medical Campus, Montefiore Einstein Comprehensive Cancer Center (MECCC), and Utrecht University have found the first direct evidence that common respiratory infections, including COVID-19 and influenza, can awaken dormant breast cancer cells that have spread to the lungs, setting the stage for new metastatic tumors.

Liver cancer cells thrive on fat, posing a serious risk of cancer diagnosis for millions of people living with fatty liver disease. But researchers at McMaster University in collaboration with Espervita Therapeutics have developed a promising new treatment that helps the immune system attack and destroy these tumors.

Parents are often told fruit is "bad" because it contains sugar, prompting concerns about how much fruit they should allow their child to eat.

The kids are not all right.

In late June, the Scientific Advisory Group for the Origins of Novel Pathogens (SAGO), a group of independent experts convened by the World Health Organization (WHO), published an assessment of the origins of COVID.