Myth #1: Serotonin is only found in the brain Serotonin definitely plays a key role in our brain function. But, only a tiny fraction of all the serotonin in our bodies is actually in our brains.

Serotonin is involved in many functions, including digestion, mood, anxiety, stress, appetite, and cardiovascular health. Serotonin works by muting certain cells, which changes cell conversations.

Scientists have uncovered how the brain’s 5-HT1A serotonin receptor—vital in mood regulation—functions at the molecular level.

In a discovery that could guide the development of next-generation antidepressants and antipsychotic medications, researchers ...

An ambiguous pleasure chemical Serotonin is often painted as the brain's "pleasure chemical" but its precise role in the nervous system is ambiguous and perplexing: It's implicated in everything ...

This study's design couldn't show why serotonin loss might prompt loss of brain function, or prove a direct cause-and-effect relationship between serotonin and thinking declines. More information ...

Serotonin is one of the most important neurotransmitters — chemicals that send signals around the brain to regulate many biological functions, including mood, memory, and digestion.

CD8 T cells: immune cells that kill cancer cells. Immune checkpoint: molecule that can slow down immune responses; SERT acts as one in tumors. PD-1 blockade: type of immunotherapy that removes brakes ...