Teenagers chatting with ChatGPT will soon see a very different version of the tool — one built with stricter ways to keep them safe online, OpenAI announced. The new safeguards come as regulators increase scrutiny of chatbots and their impact on young people’s mental health. Under the change, anyone identified as under 18 will automatically…  read on >  read on >

WEDNESDAY, Sept. 17 2025Children with chronic illnesses face extra challenges, and measuring stress through hair samples may help doctors predict which kids are at highest risk for mental health problems. Researchers studied 244 Canadian children with chronic physical illnesses such as diabetes, arthritis and cystic fibrosis. Over four years, the team measured cortisol — a…  read on >  read on >

Regular mammograms might offer a “two-for-one” opportunity to protect women’s health, a new study says. Mammograms can be used to successfully predict heart disease risk in women, on top of their ability to detect early breast cancers, researchers reported Sept. 16 in the journal Heart. A new AI model using mammogram scans can provide heart…  read on >  read on >

Hormone replacement therapy might protect a woman’s brain against Alzheimer’s disease, but only if the timing’s right, researchers say. Women who start hormone therapy within five years of menopause can lower their Alzheimer’s risk by as much as 32%, researchers reported this week at the annual meeting of the American Neurological Association in Baltimore. But…  read on >  read on >

Federal health officials are reviewing safety data on COVID vaccines in pregnant women and children, and may also reconsider recommendations for older adults. The U.S. Food and Drug Administration (FDA) is analyzing reports of possible birth defects after vaccination during pregnancy, while also preparing a presentation on deaths in children following COVID vaccination.  The meeting…  read on >  read on >

Cases of self-harm involving 6- to 12-year-olds have risen sharply, and researchers warn that common household products are often involved. Their findings appear in the Sept. 8 issue of Pediatrics, the journal of the American Academy of Pediatrics. Researchers analyzed more than 1.5 million reports made to U.S. poison control centers from 2000 to 2023. …  read on >  read on >

Your morning cup of coffee might harm the quality of a blood donation provided later in the day, a new study says. Caffeine appears to impair donated blood in ways that reduce the effectiveness of future transfusions, researchers report in the journal Haemotologica. Specifically, they found that red blood cells are more prone to damage…  read on >  read on >

Kids are more likely to become couch potatoes — or enthusiastically active — based on what they see their parents doing day-to-day, a new study says. The example set by moms and dads appears to contribute to sedentary or active behavior in their children, researchers report in the journal Sports Medicine and Health Science. “Parents’…  read on >  read on >