dietary supplements

The supplement is said to help people build muscle and lift heavier weights. Here's what experts really think.
Certain lifestyle habits, medications, and foods and drinks can have a negative impact on your vitamins. Here's what to know.
A recent study found that 90% of melatonin supplements don't contain the amount of melatonin they claim to include. Here's how to check what's actually in your bottle.
Brands that sell the supplements claim drinking the blends can help with gut health, inflammation and more. Is that actually true or is it total B.S.?
Here's the scoop on whether the supplement you're adding to your smoothies and shakes is actually good for your health.
The agency also announced a crackdown on several supplement makers for improperly selling products that promised to treat Alzheimer's and cancer.
Diving into what you need to know — and do — before taking the supplements.
Megadoses might hasten the growth of already-mutated cells, research suggests.
The popular sleep supplement is almost totally unregulated.
The biggest troublemakers include bodybuilding and sexual-enhancement products.