Hormones
Another possible trigger of mood disorders is hormonal imbalance. These brain chemicals play a key role in regulating mood, so even a small change can trigger the symptoms. Some fluctuations can be a normal function as in the case of the menstrual cycle. Thus, those people who are pregnant or going through menopause can be at a higher risk due to shifting levels of estrogen hormones. Some birth control medications can help ease symptoms of mood disorder. [4]
