Excess zinc intake can lead to copper deficiency because zinc and copper compete for absorption in the small intestine via metallothionein.

“zinc excess zinc can create a copper deficiency both zinc and copper are stored in the same cells in the small intestine in a protein complex called metallo thiamine and that can gets left off and if you eat or eat excess zinc without adequate copper you can get a copper deficiency”

“if we too much muscle mean and we're only eating zinc then we are going to get copper deficient because excess copper is going to cause us to waste excess zinc is Kozik going to cause us to waste copper”

“the zinc the presence of zinc in my diet protects me against copper deficiency or copper excess is what I should say so the presence of zinc in my diet protects me against copper excess because both of those two metals are stored in the metallic I mean proteins in the small intestine the lining and they're stuffed off together”