Zinc is the most essential part of my daily routine, other than my B complex. The human body has a multitude of essential, live enzymes which require various vitamins and minerals in order for them to function correctly. Zinc is very important because it activates more human enzymes than any mineral except magnesium. Getting enough zinc is crucial for your body, brain, and immune system. Zinc is essential to protecting against oxidative stress and helping DNA repair. One new study has found DNA damage in humans caused by only minor zinc deficiency. Unfortunately, our soils are very deficient in minerals including this one! Zinc deficiency symptoms include lack of appetite, depression, and frequent colds or infections. I don’t go a day without it.