Mental illness, in its various causes, forms, and manifestations, ranks high on any list of the ailments that try and torment mankind. In its publication The Global Burden of Disease, the World Health Organization (WHO) estimated, for example, that one form of mental illness, depression, was the fourth most important reported health problem in the developing world in 1990. The WHO predicts that by 2020, depression may rank as the number one health problem in that portion of the globe.
