Gut microbes: The key to normal sleep
Updated: Dec 7, 2020
Researchers show that the gut #microbiota are depleted by #antibiotics, mice cannot make serotonin from tryptophan they consume, which affects #sleep.
The mice were also deficient in vitamin B6 metabolites, which accelerate production of the neurotransmitters serotonin & dopamine.

https://medicalxpress.com/news/2020-11-gut-microbes-key.html