The imbalance could be caused by your genes or by events in your life. When there aren't enough of these messengers, certain messages don't get carried to some areas of the brain. Two primary messengers, called serotonin and norepinephrine, are responsible for one's moods. Treatment Depression can be treated with medicines and counseling. The combination of medicine with counselling helps most people.
Counselling can help one change a negative view of one's self, of one's past and of one's future.
Medicines known as anti-depressants are used to counter depression. All anti-depressants have some side effects. But most of the side effects happen in the early weeks of therapy. Most of them go away after a little while. You might have different side effects with different medicines.