Often called a "happiness hormone," serotonin regulates mood, so it's often associated with the brain. In reality, less than 5% of serotonin is made in the brain, with 95% of it made in the gut. But ...

New research suggests serotonin could be involved in a condition where patients experience physical discomforts for which there is no physiological explanation. An international team spearheaded by ...

A collaborative study involving Baylor College of Medicine, the University of Cambridge and the University of Exeter Medical School reveals a new gene associated with obesity and maladaptive behavior.

Cognitive deficits accompany mood disorders and other psychiatric conditions, often with debilitating effects. Limited treatments currently exist, but studies in animals and humans have pointed to ...

When a person feels pain and doctors can’t figure out why, they often tell the person that their symptoms are psychological. A recently discovered biological cause could change the narrative. Share on ...

A common clinical association among individuals suffering from depression is that many also suffer from gastrointestinal distress such as low gut motility and constipation. Though some antidepressants ...

The placenta has long been thought to produce serotonin during pregnancy. But in a new study, Yale researchers shatter the deep-rooted hypothesis — and show that the placenta doesn’t produce serotonin ...