January 18, 2010 — Individuals with treatment-resistant depression tend to have the G/G genotype associated with higher levels of 5-HT 1A autoreceptors, and turning off some of those autoreceptors ...

A type of drug already taken by more than 8 million people in the UK could help the immune system fight cancer and shrink tumours, a study finds. The widely used class of antidepressant - selective ...

Serotonin reuptake inhibitors (SRIs) are a class of drugs that affect the brain’s serotonin system, and doctors most commonly prescribe them as antidepressants. SRIs increase the levels of serotonin ...

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 discovered two human gut microbes that generate serotonin, revealing how microbial chemistry can shape gut movement and nerve connectivity, and opening new possibilities for treating ...

Serotonin is a hormone and neurotransmitter—a chemical messenger that transmits signals between nerve cells in the body. Serotonin has a positive influence on the cardiovascular system and the ...

Serotonin is often described as the happiness chemical because of its well-known role in regulating mood. However, recent research suggests this familiar molecule may play an unexpected role in cancer ...

Serotonin is nature's own appetite suppressant. This powerful brain chemical curbs cravings and shuts off appetite. It makes you feel satisfied even if your stomach is not full. The result is eating ...

Scientists have uncovered a powerful strategy that the brain uses to coordinate chemical signaling. In a new study, researchers found that in the striatum, a brain region central to learning and ...

Selective Serotonin Reuptake Inhibitors (SSRIs) were introduced in 1987 with the release of Prozac, and since then have become the most common type of antidepressant used by Americans. According to ...

A widely used antidepressant drug could help the immune system fight cancer, according to a new UCLA research study. Selective serotonin reuptake inhibitors, or SSRIs, significantly enhanced the ...