This was news in 2013, unless somebody thought serotonin wasn't genetically influenced.. The researchers concluded: "Serotonin is not necessarily required for

This was news in 2013, unless somebody thought serotonin wasn't genetically influenced.. The researchers concluded: "Serotonin is not necessarily required for baseline generation of new neurons in the adult brain, but is essential for exercise-induced hippocampal neurogenesis." https://medicalxpress.com/news/2013-05-serotonin-exercise-induced-neurons.html https://medicalxpress.com/news/2013-05-serotonin-exercise-in...