Researchers have identified two gut bacteria that can produce serotonin, a key chemical that regulates bowel movements. In experiments with mice lacking serotonin, the microbes boosted serotonin ...

Scientists have studied the main source of serotonin in the brain -- the dorsal raphe nucleus (DRN). By studying how activating the brain's 'serotonin center' affects awake animals for the first time, ...

Serotonin from the mother is taken up by the fetal placenta, which then produces a myriad of hormones, growth factors, and regulators that are delivered to the fetus. Credit: Yale University For the ...

Serotonin is often referred to as the "happiness molecule." It plays a critical role in affecting mood levels and is also a neurotransmitter that sends signals within the brain and the body.

The release of the “feel-good” chemicals dopamine, serotonin, endorphins, and oxytocin are tied to specific lifestyle, exercise, and dietary choices. Here’s what triggers each one. Spending time in ...

A team of scientists is proposing a new explanation for some cases of long Covid, based on their findings that serotonin levels were lower in people with the complex condition. In their study, ...