If there’s a lack of the proper amount of vitamin D, a negative impact in your health can happen. In kids, the lack of Vitamin D causes a disease named Rickets, where the bones go soft and become fragile, causing them to deform and be weaker. In adults, Vitamin D deficiency creates a muscle/bone disorder called osteomalacia which causes great pain through the debility of the body. To avoid this issues, it’s important to know the amount of Vitamin D the human needs and where to find it.