This is NEWS to me!
Why the epidemic of low vitamin D?
There is a wide-range of theories to explain the epidemic of low D levels. Implicated is an increase in sunscreen use, more indoor living, or the increase in pollution. It is important to note that due to darker skin color, African Americans living at higher latitudes are at greater risk of vitamin D deficiency. Everyone living at higher latitudes is at increased risk towards the end of winter.
Another theory is the well-known fact that certain medications lower vitamin D levels. For instance, one of the most common side-effects of taking statin drugs (a class of cholesterol-lowering drugs) is muscular pain caused by vitamin D deficiency. In one study, the participants needed to receive 50,000 IU of vitamin D per week for 12 weeks to get their levels up from 20ng/ml to 48ng/ml. The National Institutes of Health (NIH) may soon increase the safe maximum dose to 10,000 IUs per day. For now, such high doses of vitamin D in the tens of thousands of units should only be taken under the care of a medical professional.
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