Most likely you do, yes.
How common is vitamin D insufficiency?
Low vitamin D status, i.e. vitamin D deficiency or insufficiency, is far more common than previously thought.
When looking at stats, it’s important to distinguish vitamin D deficiency from insufficiency. While severe vitamin D deficiency isn’t as prevalent, vitamin D insufficiency is:
* 36% of the US population is deficient, with vitamin D levels below 20 ng/ml [61].
* In a study on subjects characteristic of the US white population, it was found that only 18% have a vitamin D level over 30 ng/ml [62]. Thus, a whopping 82% are insufficient in vitamin D!
Similar results were found in the 2004 National Health and Nutrition Examination Survey (NHANES) [63] and in other analyses [58].
* To make things worse, data from (NHANES) showed that the number of persons with a vitamin D level below 30 ng/mL nearly doubled between the 1994 and 2004 [63].
Bearing in mind that the desired range as recommended by vitamin D research experts, is 50-60 ng/ml, these stats are alarming and underscore the fact that vitamin D insufficiency exists in epidemic proportions in the US. This vitamin D insufficiency epidemic spans across the globe [61].
Cont: Vitamin D – what’s the optimal level and how to achieve it?




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