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

Vitamin D deficiency is widespread – but overusing supplements can also be dangerous - Experts say the myth of vitamin D as a ‘supervitamin’ does not stack up against current scientific evidence ...

DEAR DR. ROACH: Several years ago, in my early 80s, my gynecologist told me (like all women who mainly stayed indoors) that I should be taking 4,000 IU of vitamin D3 daily. Yet today, I read an ...

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

Alex Yampolsky, PharmD, is a pediatric clinical pharmacist at Elizabeth Seton Children’s center where he optimizes the comfort and care of his patients. Taking vitamin C and D together is generally ...

Vitamin D is a fat-soluble vitamin long associated with bone health, but emerging evidence is revealing that it has a broader role, particularly in gut health. Both animal and human studies have ...

Low levels of vitamin D seem to raise your risk of heart attack but scientists are still figuring out why—and whether supplements might help protect you. Vitamin D is thought to play a protective role ...