Some interesting information from the article I cited in the other mental health thread: The Americanization of Mental Illness:
NOWHERE ARE THE limitations of Western ideas and treatments more evident than in the case of schizophrenia. Researchers have long sought to understand what may be the most perplexing finding in the cross-cultural study of mental illness: people with schizophrenia in developing countries appear to fare better over time than those living in industrialized nations.
This was the startling result of three large international studies carried out by the World Health Organization over the course of 30 years, starting in the early 1970s. The research showed that patients outside the United States and Europe had significantly lower relapse rates — as much as two-thirds lower in one follow-up study. These findings have been widely discussed and debated in part because of their obvious incongruity: the regions of the world with the most resources to devote to the illness — the best technology, the cutting-edge medicines and the best-financed academic and private-research institutions — had the most troubled and socially marginalized patients.