http://neuropolitics.org/SunlightTheory.asp
This is an old article from the 2000s. It says sunlight drives conservatism via neuroendocrine hormonal manipulation:
This is an old article from the 2000s. It says sunlight drives conservatism via neuroendocrine hormonal manipulation:
But a Sunlight Exposure Theory of Political Preference explains the correlation between birth rates and sunlight exposure via increased testosterone and estrogen levels. That same elevation in testosterone and estrogen also promotes the release of dopamine, and the left-hemisphere is organized around a dopaminergic activation system. Conservatives in general exhibit more left-hemisphere cognitive styles than do Liberals. Sunlight's concurrent priming of the sex hormones and the left hemisphere's dopaminergic activation system could explain the elevated birth rates and the relative scarcity of caucasian liberalism beneath the 36 parallel, especially in the areas with higher average sunlight intensity.