Symptoms of zinc deficiency include:frequent infections, loss of hair, poor appetite, problems with taste and smell, slow growth, trouble seeing in the dark and wounds that take a long time to heal. Zinc supplements in large amounts may cause diarrhoea, abdominal cramps and vomiting. The best way to get the daily requirement of essential vitamins and minerals is to eat a balanced diet that contains a variety of foods.
Attribution: Straight Talk Foundation