Chemical element symbol: Zn
RDA(=recommended daily allowance): 15 mg.
Function: An antioxidant that is required for wound healing, it improves growth, resistance and the condition of the prostate and the liver (counteracts the effects of alcohol), and it promotes a healthy skin; involved in smell and taste.
Symptoms of shortage: Loss of appetite or hair, poor resistance and white spots in fingernails.
Possible causes of shortage: Unbalanced nutrition.