More than 33 percent of the global population may have low levels of vitamin D, says study.

Hoffmann said that although they found a high degree of variability between reports of vitamin D status at the population level, more than one-third of the studies reviewed reported mean serum 25(OH)D values below 50 nmol/l.
The new systematic review used continuous values for 25(OH)D to improve comparisons.
The result has been published in the British Journal of Nutrition.
Source-ANI