One of the most important but often overlooked vitamins in this world is Vitamin D. In this article we’ll go over the benefits of vitamin D and the effects it can ultimately have on your overall health if you have enough of it or if you are insufficient in Vitamin D. Vitamin D Insufficiency affects almost 50% of the population worldwide. An estimated 1 billion people worldwide, across all ethnicities and age groups have a Vitamin D deficiency. Do NOT be one of those people. Read on to get educated on Vitamin D!