In a large study evaluating the effects of vitamin D and omega-3 (fish oil) supplements on heart disease and cancer risk, researchers found few benefits.

Coenzyme Q10, also called CoQ10, can effectively treat bipolar depression, according to results of a small study published in the Journal of Clinical Psychopharmacology.

Our bodies produce less collagen as we age, so there is a huge market for collagen supplements. But should you be taking them?

If you’re over the age of 40, your natural melatonin has slowed production. So why not turn to a melatonin supplement as a replacement? Well, for starters, there’s little evidence that shows its worth as a sleep aid.

Early results of the REDUCE-IT study show that when combined with a cholesterol-lowering statin, the fish-oil drug Vascepa cuts rates of heart-related events.

Millions of people use probiotic supplements to enhance digestive health and counterbalance the effects of antibiotics, but are they beneficial? Maybe not.

A nutritionist answers your top questions about these popular supplements and the latest research, including: Are they really effective for digestive health conditions?

For the most part, vitamin D is a crucial part of managing your RA. However, too much vitamin D can actually be toxic. Find out if you're consuming the right amount.

Multivitamin and mineral supplements don’t help prevent heart attacks, strokes, or other cardiovascular events, according to a meta-analysis of 18 studies.

Your thyroid problem could be the culprit for that dry skin, hair loss, puffiness, and problematic nails. Here are some thyroid beauty tips, product recommendations, and approaches for specific hair, skin, and nail challenges.