After contracting COVID-19 last week, President Joe Biden has tested negative for the virus and ended his isolation period. In a tweet posted Wednesday morning, President Joe Biden shared a photo of his negative test and added, “Back to the Oval.” “Thanks to Doc for the good care, and to all of you for your…  read on >  read on >

Many smokers eager to quit embrace electronic cigarettes as a tool for kicking the habit, but a new study warns the move may raise the risk for becoming addicted to both cigarettes and vaping. The finding follows a look at the experience of nearly 112,000 smokers who sought outpatient care at a single hospital between…  read on >  read on >

They are called “forever chemicals” because they linger in the human body and can contribute to the risk of everything from cancer to childhood obesity. Now, new research on per- and polyfluoroalkyl substances (PFAS) finds they also exact a huge financial toll, costing the U.S. health system billions every year. “Our findings add to the…  read on >  read on >

Your fitness tracker, pedometer or smartwatch may motivate you to exercise more and lose weight, Australian researchers say. In a large research review, the investigators found that tracking your activity might inspire you to walk up to 40 minutes more a day (about 1,800 more steps). And those extra steps could translate to the loss…  read on >  read on >