Association of Degree of European Genetic Ancestry With Serum Vitamin D Levels in African Americans

Circulating levels of vitamin D are generally lower in African Americans than in US whites, and 1 prior analysis carried out in a small number of African Americans suggested that, within this population, vitamin D levels may be related to the degree of genetic admixture. We assessed the association between percentage of European ancestry and serum vitamin D level (assessed in 2013–2015) among 2,183 African-American women from the Black Women’s...