parkinsonsnewstoday.com/202...
This study is useful for theory, but doesn't seem to indicate any action for PwP. Things known about serotonin not in this article. Lack of sleep causes deficiency in serotonin. Bananas have serotonin. People who harvested bananas and only ate bananas exhibited hallucinations as a sign of serotonin overdose. This is interesting because lack of sleep can also cause hallucinations.