APC scientists have shown that brain levels of serotonin, the ‘happy hormone’ are regulated by the amount of bacteria in the gut during early life.
This research has multiple health implications as it shows that manipulations of the microbiota (e.g. by antibiotics, diet, or infection) can have profound knock-on effects on brain function. . . .
[Interesting . . . especially considering that gut regulation and other emotion-related processes are affected by early-life bonding (attachment . . . relationships). You can't separate bodily health from mental health in the end.]
Via Sakis Koukouvis, Alice Ruxton Abler