Anyone had Copper deficiency?

Just wondering if anyone has experience with copper deficiency, and if they wouldn't mind sharing their experience, thank you.

I recently took a cellular micronutrient assay test, and it indicated that I am very insufficient in copper, along with B12. While I've been responding well to B12 supplements, I react poorly to copper supplements (headache, irritability, insomnia, tinnitus), but I do well with copper from food sources (fresh or dried mushrooms, beef liver, shellfish, and some greens).