Remember your besties from high school? Sure, they made a lasting impression, but science suggests they influenced the trajectory of your health, too. It’s not that far-fetched: Your friends carry genes that may or may nor predispose them to mental health issues ranging from addiction to anxiety and depression. That can influence the mental health…  read on >  read on >

David Lynch, who transformed television and film with series such as “Twin Peaks” and movies like “Blue Velvet” and “Mulholland Drive,” announced Monday that he is battling the lung disease emphysema. Lynch, 78 and a former long-time smoker, first spoke about his illness in an article for Sight and Sound, a magazine from the British…  read on >  read on >

There’s a hint of good news for parents concerned about teen mental health: After 57% of U.S. teen girls surveyed in 2021 said they felt “persistent sadness,” that number declined somewhat by 2023, to 53%, new government data show. In the latest biennial poll of over 20,000 high school students nationwide, called the Youth Risk…  read on >  read on >

Fireworks displays can cause worse air quality than wildfire smoke, a new study reveals. About 60,000 firework shells exploded over Manhattan’s East River as part of Macy’s Fourth of July show in 2023, researchers said. The colorful bursts caused air pollution in New York City to spike dramatically, with levels many times higher in the…  read on >  read on >

Wildfire smoke could interfere with the safety of surgeries, a new study warns. Inhaling the smoke could complicate the effects of anesthesia on surgical patients, and it also might hamper their recovery, researchers reported Aug. 6 in the journal Anesthesiology. “Wildfire smoke poses significant health risks, particularly in people with preexisting heart and lung disease,…  read on >  read on >

Screening for cancer saves lives, but a new report shows it comes with a hefty price tag: The United States spends at least $43 billion annually on tests that check for five major cancers. Published Monday in the Annals of Internal Medicine, the new analysis focused on screenings for breast, cervical, colon, lung and prostate cancers.…  read on >  read on >

A newly developed biomaterial might be able to treat crippling arthritis by prompting the growth of new cartilage, a new animal study suggests. The bioactive material looks like rubbery goo, but it’s actually a complex biological stew designed to mimic natural cartilage in the body, researchers said. The biomaterial successfully regenerated high-quality cartilage in the…  read on >  read on >