Other names Cu


Copper is supplemented by some people for supposed mood and cognition benefits. But is it safe and effective? Read on to find out what the science says.

This nootropic has no healthy human placebo-controlled studies that meet our inclusion criteria. Negative side effects can occur if used carelessly, so make sure you’re aware of the risks of Copper.


Read about the effects of Copper in relation to the amount of evidence we've found

Does copper improve or impair cognitive functioning?

High copper intake may contribute to cognitive decline. There's no evidence that copper supplements improve cognitive performance.

Copper has been found to be increased in people with Alzheimer's compared with healthy controls [1].

However, in one study copper intake had no effect on cognition in patients with Alzheimer's disease [2].

Increased copper intake may lead to neurotoxicity through an increase in the production of reactive oxygen species [3].

Copper may or may not contribute to cognitive decline. Anyhow, it is likely not an effective cognitive enhancer.

Does copper improve or impair mood?

Increased blood levels of copper are associated with increased mood problems.

In one study, mega-doses (1g/day) of copper improved mood status compared with placebo in pregnant women [4].

However, that is the only study that has examined the effects of such high doses in humans, and the only study which has found positive effects. One gram of copper daily may be dangerous, but it was reportedly safe in this study.

In other studies, increased blood levels of copper were found to be associated with increased risk for worse mood [5][6][7][8].

Copper supplementation is likely not a good strategy to improve your mood.


The legality and side effects of Copper


Frequently asked questions about Copper


Studies conducted on the effects of Copper in healthy humans

Last updated Saturday, June 10, 2023