The Egyptians, Hawaiians, and Incas practiced brother-sister marriages in the royal line for generations without any harmful, long-term genetic consequences.

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Although it may seem taboo to modern Western society, there is evidence to suggest that many ancient cultures, including the Egyptians, Hawaiians, and Incas, practiced brother-sister marriages among their royal families. Despite the potential for increased risk of genetic disorders due to the limited gene pool, there are no known long-term harmful consequences of this practice in these cultures. However, it is important to note that modern studies have shown a higher risk of genetic disorders in close relative marriages, and these practices are generally not accepted or encouraged in Western societies.

The Egyptians, Hawaiians, and Incas Practiced Brother-Sister Marriages in the Royal