[unixfox]

Curious, are you a doctor?

[topher]

No. I took nursing training that required nutrition courses.

Any good nutrition course will explain the relationship of copper, iron, and zinc.

My nutrition book states that 'zinc toxicity' will reduce copper levels in the body.

Copper is necessary for the body to use iron.

If you add zinc to your diet, make sure you are not taking too much. A doctor can help you with that.

I am sure there is a medical test and guidance for iron, zinc, and copper. Consult your physician.