In a new study in the The Archives of Internal Medicine, researchers looked at the associtation between vitamin D and one
fractures. The study found that consuming vitamin D in doses
significantly higher than the RDA reduced the risk for fracturing a bone in the
elderly.
In another study in Medicine and Science in Sports and Exercise that came out this month,
researchers found vitamin D levels correlated with high athletic performance. Peak performance in the study was associated with the study cohort's high relative vitamin D levels.
According to the Vitamin
D Council (can you believe one exists?), you should take 2000 IUs of vitamin D3 in supplement form
for four months then get tested for vitamin D, making sure that you are
prescribed the "25 (OH) D" test. Your title of vitamin D should be above 50 ng/ml
(125 nmol/L). It is worth noting that the current recommended daily allowance is 200-600 IUs. Obviously, some doctors - and certainly many fitness professionals - disagree. But you have to include this in your calculus.
You can also get vitamin D from sunlight but obviously you also get skin cancer from sunlight so there has to be a careful balance.
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