Tue, Mar-10-20, 12:25
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Senior Member
Posts: 7,582
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Plan: EF/Fung IDM/keto
Stats: 375/225.4/175
BF:
Progress: 75%
Location: NE Florida
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Quote:
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Originally Posted by jschwab
Huh, interesting. I didn't research it much but I did see Chris Kresser is not happy with values that high. I will have to look into it more.
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Yes, Chris says:
Quote:
The U.S. laboratory reference range for adequate 25(OH)D is 30 to 74 ng/mL, while the Vitamin D Council suggests a higher range of 40 to 80 ng/mL, with a target of 50 ng/mL
But a large body of evidence in the medical literature strongly suggests that optimal vitamin D levels might be lower than these figures. There is little to no evidence showing benefit to 25(OH)D levels above 50 ng/mL, and increasing evidence to suggest that levels of this magnitude may cause harm. Consequences of vitamin D toxicity include heart attack, stroke, kidney stones, headache, nausea, vomiting, diarrhea, anorexia, weight loss, and low bone density (18).
Furthermore, in most studies, taking vitamin D supplements does not decrease risk of death, cardiovascular disease, or other conditions. Based on an exhaustive review of over 1,000 studies in 2011, the Institute of Medicine recommends a much more conservative range of 20 to 50 ng/mL (19).
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