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June 18, 2013
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Getting Enough Vitamin D


Topic Overview

Vitamin D is vital for calcium absorption in bones and for improving muscle strength. People who do not get enough vitamin D have a higher risk for developing bone thinning (osteoporosis). Getting more vitamin D may help prevent falls in older people who are low in vitamin D.1 And some studies show that taking vitamin D may reduce the chances of breaking a bone.2 Talk to your doctor about checking your vitamin D to be sure you are getting enough.

Most doctors suggest daily vitamin D supplements for children and teens. The amount of vitamin D you need changes as you get older. Talk with your doctor about how much and what sources of vitamin D are right for your child.

The recommended daily intake is 400 IU to 800 IU for adults ages 19 to 50, and 800 IU to 1,000 IU a day for adults age 50 and older.3 You usually can get the amount of vitamin D you need each day by:

  • Drinking at least 4 glasses of milk a day or consuming other dairy products that have a similar amount of vitamin D added.
  • Being out in sunlight for at least 15 minutes each day without sunscreen. Your body makes vitamin D when it's exposed to sunlight.
  • Taking vitamin D supplements. Many calcium supplements also contain vitamin D.

Related Information

References

Citations

  1. Gillespie LD, et al. (2009). Interventions for preventing falls in older people living in the community. Cochrane Database of Systematic Reviews (2).

  2. Bischoff-Ferrari HA, et al. (2009). Prevention of nonvertebral fractures with oral vitamin D and dose dependency. Archives of Internal Medicine, 169(6): 551–561.

  3. National Osteoporosis Foundation (2008). Prevention: Vitamin D. Available online: http://www.nof.org/prevention/vitamin D.htm.

Credits

ByHealthwise Staff
Primary Medical ReviewerAnne C. Poinier, MD - Internal Medicine
Specialist Medical ReviewerCarla J. Herman, MD, MPH - Geriatric Medicine
Last RevisedNovember 10, 2010

eMedicineHealth Medical Reference from Healthwise

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