health
DNA Tests Are Uncovering the True Prevalence of Incest
People are discovering the truth about their biological parents with DNA—and learning that incest is far more common than many think.
TL;DR
- Steve Edsel's search for his birth mother, initiated through an AncestryDNA test, led to the discovery that his biological parents were closely related, likely a father and daughter or brother and sister.
- Genetic genealogy, particularly through DNA matches and analysis of runs of homozygosity (ROH), is uncovering a significantly higher prevalence of incest than previously believed, challenging older estimates.
- The stigma surrounding incest, often involving child sexual abuse, has historically made it difficult to study, but DNA testing is providing new biological evidence.
- CeCe Moore, a genetic genealogist, volunteers to help individuals like Steve, becoming a de facto keeper of a database of people born out of incestuous unions.
- Discovering such parentage can trigger intense emotions, including anger, hurt, shame, and devastation, leading to the formation of online support groups for those affected.
- While genetic conditions are more likely in children born of incest, many individuals are healthy, with outcomes depending on whether recessive disease-causing mutations are present.
- The article shares the experiences of others, like Mandy and Kathy, who have navigated the complex emotional and social implications of discovering incestuous origins.
- Steve's journey includes never speaking to his birth mother but finding connection with a biological cousin, offering a sense of belonging and relief.
- The prevalence of incest is thought to be underestimated, as DNA testing only captures cases that result in pregnancy, lead to birth, and are followed by an adult participating in research or testing.