Evidence for Geographical and Racial Variation in Serum Sex Steroid Levels in Older Men - 0 views
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Asian men in Hong Kong and Japan, but not in the United States, had levels of total testosterone approximately 20% higher than in other groups
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Testosterone levels vary amongst men by geography. Testosterone levels are higher, 20% higher, in Asian men living in Hong Kong and Japan versus those that live in the US. This is very similar to some of the date around breast cancer in Asian women. Both suggesting diet and environment as the variable.