Associations have been shown between vitamin D levels and several<unk><unk><unk>  suggesting that vitamin D deficiency may predispose to<unk>  Outbreaks of<unk><unk>  occur predominantly during months associated with lower exposure to the sun. The Institute of Medicine concluded in a 2011 report that the existing data were "not consistently supportive of a causal role" for vitamin D in reducing the risk of<unk>  Other studies suggest that vitamin D supplementation can provide a protective role in reducing the incidence or severity of<unk><unk> . Vitamin D has long been associated with tuberculosis. Beneficial effects in COPD have also been shown.
Vitamin D and respiratory tract infections
Zinc and the common cold
Vitamin C and the common cold
Vaccines and autism
Vitamin D and neurology
Alcohol and cardiovascular disease
MMR vaccine and autism
Alcohol and pregnancy