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RE: The distinction between talking racist and being racist
1 - Serum Testosterone Levels in Healthy Young Black and White Men , i only found the abstract, don't have access to the whole study not even with my college info, if you do please share what you find
2Serum Estrogen, But Not Testosterone, Levels Differ between Black and White Men in a Nationally Representative Sample of Americans
Those were the 2 studies i read.
And melanin can influence vit d production which would influence test production, but going on this route it would make sense for darker people to actually have decreased test and not the other way around
Study from 1986. Study from 2007. The study from 2007 is more relevant as it's newer and would factor in more current genetic knowledge.
For the first study I would like to know the sample size, whether or not it was randomized properly, and most importantly how do they define "black". It could very well be that some people who happened to be labeled black have the genetics to make them more vulnerable to prostate cancer than another group of people who happened to be labeled white, but it doesn't show me anything about what black is or what genes exactly are responsible for the higher testosterone levels if it's even genetics.
The 2007 study is much better. They isolate out non-hispanic white and non-hispanic black. I'm not sure why they do this but maybe they want to focus on specifically American blacks. They also included Mexican American which is good for the study as well.
So according to this result it appears testosterone levels are higher in Mexican Americans but are not significantly different between non hispanic white and non hispanic black.
So appears there is no racial difference in testosterone according to that study. And that study was more recent and better designed than the older study with a larger sample size. This in my opinion does not indicate a racial difference between black and white. They did find slightly different hormone levels of estradiol but I doubt it has anything to do with being black or white, so I would have to see some evidence showing the cause before I form an opinion.
Interesting that testosterone levels did test as higher in Mexican-American men. What does that say about race? My opinion is that culture (belief systems, activities, ways of relating in different cultures, etc.) and climate (which can greatly influence culture) play large roles in the differences we see, with our own eyes, between races. That said, there is such a wide difference within each race, that we should never stereotype anyone strictly according to their race. To me, "race" is just a family lineage, primarily, and has a lot to do with the geographic area where one's ancestors spent most of their time.