The new pill form of popular GLP-1 drugs contains a compound that could cause troubling side effects. Historically, semaglutide, the active ingredient in Ozempic and Wegovy, has been administered via weekly injections into the fatty tissue just under the skin of the stomach, thigh or upper arm.

After our recent stories and videos about microplastics, readers submitted hundreds of follow-up questions. Many were practical: Should I stop using my plastic water pitcher.

The "forever chemicals" known as PFAS appear to be aging men faster in their 50s and early 60s, a new study found. Called forever chemicals due to the years it takes for them to break down, perfluoroalkyl and polyfluoroalkyl substances are present in the blood of an estimated 98% of Americans, according to the National Academies of Sciences, Engineering, and Medicine.