Uriah

Latitude (not temperature) is the most powerful predictor of schiz because of its association with sunlight and vitamin D. New York is much colder than London, but it’s London that’s experiencing a schizophrenia catastrophe among its black population.

I think all the risk factors also here apply to homosexuality, as I’ll talk about more about later: farm boys aren’t just pretending; they really are less gay than the rest of you. This set of risk factors also goes some way toward explaining very high homo rates in Jews.

Minorities have a higher risk of developing schizophrenia everywhere and a smaller minority they are in their city the greater their risk. Ethnic and cultural homogeneity reduces feeling of paranoia and distrust: the Amish do not see conspiracies everywhere.

The last important variable is fish consumption, mediated by the extraordinarily powerful anti-psychotic effects of EPA-DHA. There is no reason everyone on earth should not take fish oil, particularly high risk groups like West Africans in Britain.

Iceland is almost in the Arctic Circle and yet their schizophrenia prevalence is actually lower than the European average because they eat even more fish than the Japanese.

Finns have consistently the highest schizophrenia rates of any European people because they live so far north and yet, unlike the Scandinavians, they stupidly don't eat fish.