Part 1 of Essay
Throughout the age of man, the study of depression related illnesses had been very minimal to say the least. Not much could be learned about depression until this century because not much was known about the chemistry and the psychology of the brain; the basis of where and why people get depressed. Depression is caused b ....

Part 2 of Essay
.... causes it. Heredity seems to play a major part in many cases of depression. “Studies of families, in which members of each generation develop bipolar disorder, found that those with the illness have a somewhat different genetic makeup than those who did not get ill. However the reverse is not true” (Morgan 561). A stressful environment, such as a bad work situation, family problems, and even problems with one’s own sex life are common catalysts for depression. Even though these are usually not at the basis ....