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 ...

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 ...

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.

Diagnosis of serotonin syndrome is based on clinical presentation and history of serotonergic-agent use. No laboratory or radiological test is available to confirm the diagnosis. Sternbach (1991) ...

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 ...

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 ...