Have you checked your zinc levels? Zinc deficiency can promote a variety of human cancers including esophageal as well as cancers related to the digestive tract, head, & neck. Zinc supplementation has been shown to reduce the number of tumors & carcinogenic severity. Click through to read on as Dr. David Jockers discusses symptoms of a zinc deficiency, list of foods high in zinc & how to address a zinc deficiency through supplementation. Please pin to save for later!