I've recently had an increase in allergies, which I've read could be related to copper toxicity. Note that vegetarians are particularly susceptible, as most zinc-rich vegetarian foods are also high in copper. High-zinc/low-copper foods are mainly animal products, which I haven't been eating much of lately! Sure enough, I was eating a lot of copper-rich foods and taking copper through my B-complex and multivitamin!
Well, I reduced those supplements and added a 50mg chelated zinc tablet. My skin is less dry, is clearing up, and I have more energy! I also have noticed an increase in libido, which apparently zinc has been known to do.