[incrediblylarge]

I did a job for some neuroscientists years ago and we found a very strong correlation between microplastics exposure and elevated acetylcholine in a very young sample. They all thought there should be no effect or the effect should be inverted because of oxidative stress. We never resolved the phenomenon though. From what I understand, Acetylcholine elevation in the lipidome is either neuroprotective or neutral. Is there any reason why microplastics exposure would tend to increase acetylcholine?

[mobilejdral]

Depends on the microplastics, but many act as endocrine disruptors that "mimic" estrogen, tricking the body into over-activating ERa and upregulates the PEMT gene and the higher acetylcholine. It could also be that the microplastics can physically bind to or chemically inhibit acetylcholinesterase and that is the reason for the higher acetylcholine. Depending on the cause this is only a short term good thing, but could be downregulating genes.