Giving psilocybin, the psychedelic in magic mushrooms, to rats made them more optimistic in the longer term, suggesting that the psychedelic substance could have great potential in treating a core symptom of depression in humans.

[u/mvea]

https://newatlas.com/medical/psilocybin-optimism-depression/

[u/Euphoric-Deer2363]

The problem with this, is that pharmaceutical companies need to charge you big bucks for a naturally occurring substance or they won't bother doing the legwork. They really don't want you to get better. Just keep taking those pills.