What is Vitamin D? Vitamin D is a hormone that helps control calcium levels in your body. This is primarily responsible for helping intestines absorb calcium, iron, magnesium, phosphate and zinc. Worldwide, an estimated 1 billion people have inadequate levels of vitamin D in their blood. An estimated 40-75% of all adults are vitamin D … Continue reading 7 Common Diseases Linked to Vitamin D Deficiency! How to Get More Vitamin D?