Omega 6 creates an endocannibinoid that is more like Delta 9 THC and Delta 9 THC increases glutamate release. This will cause psychosis in people who have high glutamate levels or low GABA levels.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7714685/

Omega 3 creates an endocannibinoid that is more like CBD and CBD increases GABA release.

https://www.sciencedirect.com/science/article/abs/pii/S10436...