Top 5 Serotonin Deficiency Symptoms

Below are the top 5 serotonin deficiency symptoms. Be aware that serotonin deficiency is more common in women than in men, so your gender alone can be a risk factor.

1. Depressed mood. If you are depressed, pessimistic, distrustful, cynical or gloomy, you may have a serotonin imbalance or deficiency.