You are trying to impress with the number of sources, but it's all from animal models, or even speculative, while the data for its absence is from actual autopsies.
Also, it isn't something that is difficult or expensive to try.
I'm not trying to impress jack all. I literally just block quoted the text of the review article most relevant to the point.
I spot checked starting from newer to older the too much copper citations and the third one I checked, "Brewer, 2014", though it itself cites animal studies, was about copper in humans (specifically inorganic copper as a hypothesized problem, versus organic copper which he says is fine). The Brewer paper references "Squitti et al., 2005" which was a study of humans showing elevated copper (of inorganic origin? I didn't read further than the abstract) and a couple of other things in Alzheimer's patients.
So copper from food? Good. Copper from water pipes? Bad. Chelated copper from supplements? I don't know. Maybe further reading would show other results. Again, I just skimmed this.
There is literally no reason to believe this. Plus, the amounts leeched from pipes are nowhere near high enough to provide even the paltry RDA. People used to cobsume more. They used to use bronze or copper cookware. It's bullshit. You are only coming up with excuses why it isn't copper. Why? I suppose because the cure would be almost free.
I don't care. It's unreasonable. There is no such a thing as "organic copper". People used to use those much more. There is no good correlation between blood levels and copper status. The actual levels in the actual brains show the opposite in autopsies.
