Vitamin D The Underrated Supplement
There are over 34,000 scientific investigations to date on how vitamin D works in your body, yet it continues to be ignored even by many physicians.
Vitamin D deficiency is often one of the last things a doctor suspects when a patient complains of less-than-perfect health.
Vitamin D is produced when the sun strikes your skin with a high enough concentration of ultraviolet B (UVB) rays. Deficiency of vitamin D is therefore due to not enough exposure to sunlight.