Depending on the type, some vitamins and minerals can be taken at any time of day, with or without food, while others require ...

Vitamin B12 is typically well-tolerated, but in very rare cases, there are serious side effects to be aware of. Learn more ...

Dietary supplements are a booming business. More than half of U.S. adults take at least one, and the supplement industry is worth billions of dollars. But many experts say people are better off saving ...

QUESTION: Hi Dr. Zac, am I being hoodwinked into buying vitamin supplements, or do they actually work? I’ve been feeling constantly tired despite getting enough sleep, and I suspect I might be low on ...

Sweeney is a contributor for TIME. Sweeney is a contributor for TIME. Vitamin D does a lot for your body, supporting strong bones, muscle movement, your immune system, and more. Taking a vitamin D ...