For 99.86% of individuals, genetic analysis of race matches self-identification.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1196372/
Predefined ethnic/racial labels are highly informative about genetic identity.
https://web.stanford.edu/group/rosenberglab/papers/popstruct.pdf
The concept of race existed in ancient Greece, Rome, Egypt, China, India, and Arabia.
http://www.amazon.com/Race-The-Reality-Human-Differences/dp/0813340861
A variant of the gene ApoE4 is a strong genetic risk factor for early-onset Alzheimer's disease, and the characteristic most likely to raise or lower that risk is race.
http://archive.is/vjomQ
Organ donations must be from person with the same race and similar genetics, due to this, mixed-race people for having peculiar genetic combinations face challenges when they try to receive organ donations
http://content.time.com/time/health/article/0,8599,1993074,00.html
Mixed-race patients struggle to find marrow donors
http://archive.is/ItFpE
Asian-white couples face distinct pregnancy risks, Stanford/Packard study finds
http://med.stanford.edu/news/all-news/2008/10/asian-white-couples-face-distinct-pregnancy-risks-stanfordpackard-study-finds.html
Black women give birth to fully developed babies a full week earlier than white women.
https://academic.oup.com/ije/article/33/1/107/668109
Dan Freedman: Racial differences in newborn behavior, 1974
[YouTube] Dan Freedman: Racial differences in newborn behavior, 1974 (embed)
Some malformation phenotypes appear to vary in their risk based on mixed racial-ethnic groupings.
http://archive.is/5kPn1
Mixed race black and white couples face higher odds of prematurity and low birth weight, which appear to contribute to the substantially higher demonstrated risk for stillbirth.
http://archive.is/gyKM6
Adolescents who identify themselves as mixed race are at higher health and behavior risk than those of 1 race.
http://archive.is/hbpsV