Zinc deficiency has been implicated as a factor with birth defects and low birth weight, impaired learning, as well as delayed sexual development. Additional zinc intake may help with the loss of taste sensation or smell, wound healing, anorexia loss of appetite, paranoia, depression, strong body odor, certain hair, nail, and joint arthritic problems, benign prostatic hypertrophy, impotence, cataracts and optic neuritis, as well as skin conditions such as acne and dermatitis. It should be noted though that those infamous White Spots on someone's nails are not caused by zinc deficiency, as they are just as common in people with excessively high zinc levels... Full Text