what is zinc good for
Zinc is a metal. It is called an âessential trace elementâ because very small amounts of zinc are necessary for human health. Zinc is used for treatment and prevention of zinc deficiency and its consequences, including stunted growth and acute diarrhea in children, and slow wound healing.It is also used for boosting the immune system, treating the common cold and recurrent ear infections, and preventing lower respiratory infections.here is also concern that taking large amounts of a multivitamin plus a separate zinc supplement increases the chance of dying from prostate cancer. Taking 450 mg or more of zinc daily can cause problems with blood iron. Single doses of 10-30 grams of zinc can be fatal.