Zinc is needed for protein synthesis and collagen formation...
However, daily dosages of more that 100 mg of zinc cna depress the immune system while dosages under 100 mg can enhance immune response. Zinc levels may be lowered by diarrhea, kidney disease, cirrhosis or the liver, diabetes, and fiber. The phylates found in grains and legumes bind zinc so it cannot be absorbed. The proper copper and zinc balance should be maintained. Consumption of hard water can upset zinc levels.
Sources of zinc: fish, legumes, meats, oysters, poultry, seafood, whole grains, brewer's yeast, egg yolks, lamb chops, lima beans, liver, mushrooms, pecans, pumpkin seeds, sardines, seed, soy lecithin, soybeans, sunflower seeds and tourla.
(Source:
Prescripton for Nutritional Healing by Phyllis Balch and James Balch , Page 23)