A Day of Infamy Vitamin D3?
November 30, 2010 will go down in infamy in the history of modern medicine. It is the day the Food & Nutrition Board elected to marginally increase vitamin D requirements to 600 IU (that’s just 15 micrograms or 15/1000ths of a milligram) and the upper safe limit to 4000 IU (100 mcg), the point where blood levels only begin to rise.For comparison, 600 IU is equal to just 4 minutes of mid-day full-body summer sun exposure.
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