Results:
Total 82 studies were included in which 12 studies showed vitamin levels
less than 30 ng/mL in the healthy individuals (male and female) and 70
studies in different disease conditions. It found that about 64.6%
healthy subjects had vitamin D levels less than 30 ng/mL. Moreover, 70
studies showed its deficiency in some diseases such as musculoskeletal,
bone and periodontal problems, nursing mothers and children,
tuberculosis, diabetes, cardiovascular problems and some type of
cancers.