Vitamin D deficiency: A global epidemic

 “We estimate that vitamin D deficiency is the most common medical condition in the world.”
– Dr. Michael F. Holick, vitamin D expert

Vitamin D deficiency is a world-wide epidemic, 123 with recent estimates indicating greater than 50% of the global population is at risk. 4

A high prevalence of vitamin D deficiency has been found across all age groups in all populations studied in countries around the globe. 5678910111213141516171819

Even those who are otherwise healthy are not immune to deficiency. 10202122

In addition, the scope of vitamin D deficiency is actually far greater than the numbers indicate. Published estimates and studies grossly underestimate the extent of the problem as a result of using an outdated 25(OH)D threshold (cut off point) of 30 ng/mL (75 nmol/L) for determining deficiency.

Recent evidence reveals beneficial effects of vitamin D at serum levels around 50 ng/mL (125 nmol/L) 232425 or higher – effects not seen at levels below 40 ng/mL (100 nmol/L), indicating a need for upward revision of the deficiency reference threshold.

Page last edited: 09 July 2012


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