A new study in the Journal of the American Medical Association looked at 25 melatonin gummies and found that some contained much more melatonin than advertised, or none at all.

Spending on dietary supplements has grown strongly during the pandemic, and some health care providers say that raises concerns.

“Nootropics” are a relatively new interest of Silicon Valley. Some say they improve cognitive function, but a nutritional scientist we spoke with has doubts.

Paying a $200 million fine may be the easy part of the company's deal with the feds