While most of the body’s serotonin is indeed in the gut, the serotonin that impacts our mood, sleep, and other cognitive functions is exclusively produced and used in the brain.
I undersand the reasons to do it, also, but I think you clearly elucidate what was lost... (T_T)
Post that there's no verifiable empirical evidence for aliens in a thread about Navy pilots spinning tall tales and you'll get a lower post score than the people saying that Navy pilots are unimpeachable founts of truth who would never lie, much less get confused. All this reflects is the fact that people who want to believe are more likely to be drawn to a thread about aliens, and people who are skeptical of it tend to ignore those threads or actively stay away because they're afraid of what might happen to their worthless internet point score.
Any type of inflammation will cause tryptophan to be pushed down an alternative pathway instead of going to make serotonin.
Also, it’s very possible that low zinc after Covid would cause the lack of serotonin as well.
References people. Especially when it comes to anything related to subjects outside of tech.
They cut the vagus nerves of rats and see behavior change.
Which makes sense to me - when "brains" first evolved, the connection to the stomach would've been the prime connection.
So they also seem to be effective via the enteric nervous system!
Your confidence is totally and completely unwarranted.
[1] https://www.ucl.ac.uk/news/2022/jul/no-evidence-depression-c...