Serotonin is an important neurotransmitter that plays a key role in regulating mood, appetite, and sleep. While low levels of serotonin have been linked to depression, the relationship between serotonin deficiency and depression is complex and not fully understood. While it is clear that serotonin is an important player in the development and management of depression, it is likely that other factors, such as genetics, environment, and lifestyle, also play a role in the development of depression.
