Calcium metabolism, cutaneous production, sources, incidence and detection of insufficiency, consequences of deficiency, association with bone health, influence on sports performance, setting, and research question all rely on adequate levels of vitamin D. It plays an important role in the body's metabolism of calcium and phosphorus and in maintaining strong bones. Vitamins are essential, dietary micronutrients. Included are amino acids, vital fatty acids, and minerals. Mineral absorption in the intestine is facilitated by vitamin D, which belongs to a class of fat-soluble seco-steroids. Vitamin, recommended dosages, deficiency disorders, and overdose situations are all included in a comprehensive database.