Calcium and vitamin supplements are taken to provide the body with the ''''required'''' nutrients. Calcium is a mineral found in many foods. Vitamins are very important nutrients for the body.
Vitamin D is an essential vitamin necessary for the development of bones. Sunlight helps the body to produce vitamin D. Vitamin D deficiency results in rickets in children and osteomalacia in adults.
Sun avoidance and the use of sunscreen may in part account for low vitamin D levels in the population.