Incest, defined as sexual relations or marriage between individuals who are closely related by blood, is one of the most universal and enduring taboos in human history. While the specific definitions of prohibited relationships vary across cultures and legal systems, the prohibition itself is a cornerstone of human social organization. This article explores the multifaceted reasons behind the incest taboo, including biological consequences, legal frameworks, and sociological theories.
The definition of incest varies by culture and legal jurisdiction, but it almost universally includes sexual relations between first-degree relatives Parents and children Full siblings Some societies and legal codes expand this to include: Grandparents and grandchildren Uncles/aunts and nieces/nephews (third-degree relatives). Step-relatives adoptive siblings Theories on the Incest Taboo Incest