Calcium is required to build the bone density. Calcium has to be absorbed by the body and for this, we need Vitamin D. Vitamin D is available free of cost through sunlight and also in several vegetables. Calcium is found in several vegetables as well and the best source is milk. The body absorbs calcium the best before we reach an age of 24. This is the best time to increase your height by drinking milk and consuming other calcium enriched foods. After 24, the bones get fused in the body and they do not grow vertically. Also keep in mind that several genetic factors are involved in attaining height growth.