Zinc is structurally important in hundreds of enzymes and plays a role in cognitive function, diabetes, insulin function, and immune responses.

“zinc is important in many things that are related to cognitive decline, it's important in diabetes, it's important in functioning of insulin, it's important, of course, in the trophic activity of insulin and, you know, on and on. It's important in immune responses.”

“So it actually has many effects that are related to cognition.”