An essential mineral, zinc might be lacking in some diets, as major zinc sources include meat, poultry, and oysters. While beans and grains also contain zinc, depending on the soils in which they’re grown, phytates in grains, legumes, and nuts can interfere with its absorption. Since the body has no special zinc storage capability, it’s important to consume zinc on a regular basis.
Zinc has been found to be low in the blood of people suffering from depression. In fact, the more depressed someone is, the lower the zinc level. A recent systematic review of randomized controlled trials concluded that zinc supplementation for depression showed evidence of potential benefits as a stand-alone intervention.