الفهرس 
Importance of food nutritionOnly 14 pages are availabe for public view
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Abstract
Zinc is essential in the human diet, not only for growth and development, but also for critical functions in every cell of the body. Zinc promotes normal growth of the genital organs, healthy skin, wound healing, and the proper function of the immune system. Zinc is active everywhere in the body, as it is the co-factor for more than 70 enzymes that perform specific tasks in the eyes, liver, kidneys, muscles, skins, bones, and male reproductive organs. It has close ties to protein. wherever protein is, there is zinc, therefore regular dietary supply is important