By Annette R. Karnash, R.N., M.N.
U.S. individuals have marginal zinc deficiencies, particularly the elderly and those with diabetes. Low zinc levels are associated with an increased susceptibility to infection, poor wound healing, a decreased sense of taste or smell, skin disorders and diabetes. Zinc is involved in insulin metabolism; synthesis, secretion and utilization. It also protects against beta cell destruction and has antiviral effects. Diabetics excrete more zinc than usual into the urine and therefore supplements may be recommended. Zinc is found in nuts, seeds, whole grains and legumes.
