This spring and summer brought many exiting new studies teaching us more about the gut-brain connection. One article that made splashy headlines linked differences in the gut microbiome with different behavior in kids.
Doctors designed the dietary intervention of this study of older adults because they thought it wouldn't impact mental health compared to psychotherapy. They were in for a big mood-brightening surprise.
Melatonin is a commonly used over the counter sleep aid, but this hormone's effect on fertility and puberty are powerful and not fully understood in humans. Caution should be exercised before any chronic use or using melatonin in kids.