Imagine there is a supplement or medication that strengthens your bones, boosts your immune system, prevents autoimmune diseases, helps lose weight, helps prevent cancer and doesn't cost you much. hundred. Research has led many people to believe that this supplement does indeed exist, and it's called vitamin D. DeficiencyVitamin D deficiency is one of the fastest growing epidemics in the world today. About 75 percent of American adolescents and adults have low levels of vitamin D. Some experts attribute the high percentage of vitamin D deficiency to the increased use of sunscreen and long-sleeved shirts after recent prevention campaigns. skin cancer… But you don't have to tan or sunburn to get vitamin D. (Lite 1) Vitamin D deficiency occurs when a person does not have an adequate amount of vitamin D. in his body. Not only can vitamin D deficiency interfere with bone mineralization in children, but it has also been linked to increased risk of cancer, falls, cardiovascular disease, osteoporosis, hypertension, and impaired metabolism. glucose and lipids. (Cherniack 1)(Pediatrician...