>>So I guess you dont beleive any medical studies that are conducted by and with goyim (which would be just about all of them). <<
Biological and sociological are two separate things. Psychological and sociological Researches have made the mistake in the past grouping Hispanics together, without realizing that the Dominicans react differently than the Porto Ricans.
Just seeing the notion that they should be the same is obsurd. Someone checks that the got married after meeting the person for 1 date. Was it set up by family members who did research before (and know each other), or were they drunk when they met in Vegas?
How can you compare the two?