It is related to the fact of maintaining a sexual love relationship with someone from the same family member or close to her. Being understood as a taboo, or a perversion of the human being, today even in many isolated societies, civilizations and tribes this practice is seen to perpetuate the species among them. It is a subject that is mentioned in ancient times, from Greek mythology, to biblical passages, thus being the only way to generate descendants of a tribe or of women that it was not possible to travel to other nations to find a husband.
Sigmund Freud, the father of the psychologist explains it in a way that, more than a perversion, it is like a primitive horde, that is, a rivalry between men for the sexual and promiscuous sphere; that more than incest itself, it is because of the power that caused the confrontation between another member of the family clan for one of the women under his rule, this was seen a lot among the patriarch, the highest rank of the clan. Freud explains incest from a more structured point of view, referring to the simple basic impulse to name the human psyche, being found in the unconscious of the human being, without distinction of sex and seen very often in the same social group.
Consequently, we could define it as a different or dysfunctional way of loving, which leads to emotional pathologies, where parents use their children to support a lack of love and satisfy the primary needs that another adult should fulfill, in the same way the child He can feel it towards some of his parents, filling a void that grows due to the absence of any of them, and can appear among any member of the family.
In the Bible it is said that in order to search for Lot's descendants, his two daughters made him drunk so that his offspring could support themselves. The science speaks that this can bring genetic difficulties because if carriers of a disease can worsen carrying malformations such as cleft lips among others. The diversity that human sexuality provides within this universe, recognizes that sex is one of the reasons why one is alive and that for this reason many races are not extinct.