Race mixing leading to obesity?

My post from a few weeks ago, Why does race matter for women?, elicited a lot of response (made it to the front page of Digg). Most of the open public discourse on race is bracketed in a few coarse frameworks; it is a social construction, and no one cares who is truly enlightened anymore, white racism keeps people of color down, etc. Though of utility in sloganeering I think most of these generalizations are such half-approximations that they mislead a great deal of time. So for example the interesting repeated finding that women in the United States are consistently more race conscious in partner selection than males in terms of avowed and revealed preferences (the study I posted on was just the most thorough, there were a few other prior surveys that showed the same general surprising finding). Public dialogue and discussion doesn't operate much with the assumption that women are the repository of race consciousness and purity, that seems a rather retrograde view among White People, but something close to it seems to operate in the day to day (as many 25 year old Asian American male virgins might attest to). With that in mind, Yann points me to a new paper, Prevalence of obesity in multi-racial vs. mono-racial individuals: