Prevalence rates of severe vitamin D deficiency, defined as 25(OH)D <30 nmol/L (or 12 ng/ml), of 5.9% (US), 7.4% (Canada), and 13% (Europe) have been reported.

Prevalence rates of severe vitamin D deficiency, defined as 25(OH)D <30 nmol/L (or 12 ng/ml), of 5.9% (US), 7.4% (Canada), and 13% (Europe) have been reported. https://www.nature.com/articles/s41430-020-0558-y https://www.nature.com/articles/s41430-020-0558-y Three-quarters of U.S. teens and adults are deficient in vitamin D, the so-called "sunshine vitamin" whose deficits are increasingly blamed for everything from cancer and heart disease to diabetes, according to new research. https://www.scientificamerican.com/article/vitamin-d-deficiency-united-states/ https://www.scientificamerican.com/article/vitamin-d-deficie... Okay, so the numbers aren't consistent. They're not even close. That and a lot of anecdotal evidence. I find it hard to take Vitamin D deficiency seriously. I am anecdotally not depressed about it.