The book "Family Marriages in the American Population" examines the important sociocultural phenomenon of consanguineous marriages in the United States. The authors, George B. Lewis and George Byron Lewis, reveal the historical context and contemporary attitudes toward consanguineous marriage in contemporary American society. The book offers an in-depth analysis of the impact of such marriages on genetic diversity and cultural norms, and also provides the reader with an opportunity to better understand and discuss this complex issue. Consanguineous Marriages in the American Population is an important resource for those interested in genetics, anthropology, and modern sociology.