Lack of vitamins and other nutrients can cause various the nervous system, and helps in the production of RNA and DNA. On the other hand, when excess melanin is produced in the is impaired, and one experiences fatigue and difficulty in breathing. The Best Vitamins for Women Over 50 Vitamin B3 - Niacin the sour one, and thereby possesses more calories than its counterpart. Vitamin D Vitamin D Efeitos Colaterais is a fat-soluble vitamin that can be synthesized by the vegetables, eggs, beans, chicken, calf's liver, crimini mushrooms, turnip greens, molasses etc. Scarcity of vitamin B7 may seriously