Probably. Chemical imbalences can be from simple things like envirormental toxins from oesticides on lawns or on your food. 85% of food is sprayed with pesticides. Nearly everyone has Glyphosate in their bodies. Less so for those who eat organic.

Chrinic Infections also cause chemical imbalences, as do powerful drugs pushed by Big Pharma and the rheumatology department.

For instance. A Kynureine pathway imbalence can cause the oddest behavioral changes such as not being able to focus your eyes and other perception problems or if you have too much specific kynureine metabolites countering serotonin through the conversion of L-tryptophan you could be autistic; as every autistic and Asperger patient, to a lesser extent, have deformities in this pathway.

Simple crap like that. That pill pushers don't seem to get or care about.