Now, in a study published in Science Signaling, a team of scientists revealed how one molecule produced in the gut, the neurotransmitter serotonin, activates a subset of T cells and dampens the immune ...

Serotonin is often referred to as the "happiness molecule." It plays a critical role in affecting mood levels and is also a ...

Not all the tryptophan we consume enters the brain and is converted into serotonin. “So, the more tryptophan in the diet, the more likely any molecule is to get across the blood brain barrier ...

Molecular aspects of depression were a total mystery until the advent of antidepressant drugs of which influences on serotonin and norepinephrine indicated a role for these molecules in mood ...