Serotonin can be made only after sweet or starchy carbohydrates are eaten. More than 30 years ago, extensive studies at MIT carried out by Richard Wurtman, M.D., showed that tryptophan, the ...

Although serotonin signaling had been implicated in mating behavior by previous work, this new study shows that it's not so much the behavior that's affected, but how it's directed.

Serotonin is known to regulate digestion at multiple levels within the human gastrointestinal, and up to 95% of the mood-regulating hormone is released into the gut by certain intestinal cells ...

Serotonin Mediates Behavioral Gregarization Underlying Swarm Formation in Desert Locusts Science, 323 (5914), 627-630 DOI: 10.1126/science.1165939. More on locusts and serotonin: ...