Check us out at http://www.tutorvista.com//videos Deficiency diseases are diseases in humans that are directly or indirectly caused by a lack of essential nutrients in the diet. Deficiency diseases are commonly associated with chronic malnutrition. Additionally, conditions such as obesity from overeating can also cause, or contribute to, serious health problems. Excessive intake of some nutrients can cause acute poisoning. Deficiencies Proteins/fats/carbohydrates •Protein-energy malnutrition oKwashiorkor oMarasmus oMental retardation Dietary vitamins and minerals •Calcium oOsteoporosis oRickets oTetany •Iodine deficiency oGoiter •Selenium deficiency oKeshan disease •Iron deficiency oIron deficiency anemia •Zinc oGrowth retardation •Thiamine (Vitamin B1) oBeriberi •Niacin (Vitamin B3) oPellagra •Vitamin C oScurvy •Vitamin D oOsteoporosis oRickets
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