But the problem is consuming of copper itself in it's natural form is harmful. I'd like to know how can copper be converted into edible substance, for example, edible copper leaf or dust. What I want to know is how is copper converted into dis-harming consumable element further which can be used in medicine.
I'm afraid this is impossible. This is because copper is an element and has a specific set of chemical properties which can't be changed. For example, the sulfate salt is blue and can't be made orange and remain the same compound. Copper in fact is an element, which means it can't be changed in any way and remain copper. Granted a soluble copper compound can be made insoluble and less toxic. For example copper sulfate can become copper sulfide when mixed with sodium sulfide. The copper sulfide will be very insoluible and much less toxic than the sulfate. However it might react with stomach acid and form copper chloride which is very soluble and hydrogen sulfide which not only smells bad but is just as toxic. It sounds to me that you are relying on some physical property of copper to supress cancer. I've seen a lot of copper bracelets, but copper has no known physical properties which would supress cancer in any way. Copper is not magnetic or radioactive. Radioactive materials in fact can be used to treat cancer. Perhaps a radio isotope of copper could be used for this purpose. I don't know how safe it would be however. I would definetly not want to wear anything radioactive around my wrist.
