What are the health benefits of vitamin D3?

Keith Roach, MD
Internal Medicine
Vitamin D3 is most beneficial to your bones and reduces the risk of osteoporosis. Internal medicine specialist Keith Roach, MD, explains why it's important to get enough vitamin D3, and what other health benefits it has.
Marjorie Nolan Cohn
Nutrition & Dietetics
Vitamin D deficiency is more common than you might expect. People who don’t get enough sun, especially people living northern climates, are at risk. Vitamin D deficiency also occurs in sunny climates, possibly because people are staying indoors more, covering up when outside, or using sunscreen more consistently these days to reduce skin cancer risk. Vitamin D is crucial for the absorption and metabolism of calcium and phosphorous, which have various functions, especially the maintenance of healthy bones. It supports the immune system, and adequate vitamin D levels are linked with healthy weight.

Dosage: RDA for adults is 600IU daily with an upper limit of 4,000IU per day. For most adults, 1000-2000IU per day is adequate; vitamin D3 can be taken in larger doses once per week.
Dr. Mehmet Oz, MD
Cardiology (Cardiovascular Disease)
Also called cholecalciferol, vitamin D3 plays a number of roles in our bodies, including:
  • Promoting absorption of calcium and bone health
  • Boosting immune function
  • Reducing inflammation
  • Healthy neuromuscular function
  • Possibly protecting against some forms of cancer
This content originally appeared on doctoroz.com