
In 2005, a study published by The Journal of Clinical Investigation showed cannabinoids’ ability to promote neurogenesis in the adult hippocampus, the brain region responsible for many important brain functions, including mood and memory.
The study authors also cited the anti-anxiety and anti-depressant effects that accompany the neurogenesis. This explains why users across California, Colorado, Washington and other marijuana-friendly states often turn to the herb for a mood boost, instead of pharmaceutical drugs.