date:Aug 22, 2012
vitamin D supplement cut in half the risk of a respiratory infection.
Vitamin D
Several recent studies have suggested that vitamin D often referred to as the sunshine vitamin has several important roles in the human body, including modifying in immune functions.
Studies led by Camargo and other researchers have associated higher vitamin D levels with reduced risk of respiratory infections such as colds or flu, but such observational studies cannot prove that the vitamin actually protects a