Depression is caused by a variety of factors. It can by biological, genetic, physical and emotional. Simple daily life and surroundings are important. Stress and other negative influences have been known to contribute. Complicated diseases like depression aren't easy to crack. We also recognize the intricacy of man's mind. The medical profession is working steadily in an attempt to study the mind and how it works. A chemical imbalance in sleep problem causes depression, that's known. We are learning more every day about how the whole process works. Better treatments come from more knowledge. Depression treatment comes from a variety of medications on the market. Quick fix schemes exist too, but they don't work. You have to be careful to seek medications that have been clinically studied and have been proven to display positive effects in the treatment of depression. There was a time in our history if you were afflicted by anything that was associated with mental illness you were thrown into a mental ward and lost in the system. It's good to know that's no longer the case. In 1988 the anti-depressant 'Prozac' first hit the market in the United States. It was proven to work, and thus is still prescribed today even though it can have serious side effects. There are several types of depression medications (antidepressants) used to treat depression and conditions that have depression as a component of the disease, such as bipolar disorder. These drugs improve symptoms of depression by increasing the availability of certain brain chemicals called neurotransmitters. It is believed that these brain chemicals can help improve emotions. Major types of antidepressants include: * Tricyclic antidepressants (TCAs) are some of the first antidepressants used to treat depression. They primarily affect the levels of two chemical messengers (neurotransmitters), norepinephrine and serotonin, in the brain. Although these drugs are effective in treating depression, they have more side effects, so they usually aren't the first drugs used.