Sunlight helps your body produce vitamin D, but the same UVB rays that trigger vitamin D synthesis also damage skin cells and increase skin cancer risk. Dermatologists do not recommend unprotected sun ...

Medically reviewed by Jamie Johnson, RDN Key Takeaways Too much vitamin D from supplements can lead to harmful blood levels, ...

Vitamin D is one of the most widely used supplements in the United States, yet it is also one of the easiest to take ...

Could taking fish oil pills accelerate cognitive decline? That’s the alarming headline from a recently published study which ...

Both vitamins are good for you. Taking vitamin D, however, is better for directly boosting your energy and immunity, ...

Share on Pinterest A major new review suggests that calcium and vitamin D may offer little protection against bone fractures. MNT Design/Johner Images/Viktoriya Skorikova/Getty Images It’s not ...

Randomized controlled trials have failed to demonstrate the effects of vitamin D supplementation on reducing the mortality rate in critically ill adults. A post hoc study revealed that vitamin D ...

Both iron and vitamin D can influence energy levels, but iron deficiency tends to have a more direct effect on fatigue. The evidence linking vitamin D supplements to major improvements in fatigue is ...