Our body needs Vitamin D for various purposes like for absorbing calcium. We also know that it comes from sun but the fact is our body can make vitamin D only when the UV index is more than 3. So it becomes difficult for body to make this vitamin in the winter season.
The basic function of Vitamin D is to regulate levels of calcium and phosphorous in blood for strong bones and healthy teeth. But new study indicates that there might be more to this vitamin. The occurrence of colds which increases in the winter season might be because of the low levels of vitamin D.
It can reduce the incidences of colds by 70% and also reduces the risk of dying from heart diseases of known risk patients by 30%.