Why is incest so prevalent? It feels like it's everywhere once you start looking.

Thanks for asking this. It's a question a lot of people find themselves sitting with and the feeling that it's "everywhere once you start looking" is not in your head.

The honest answer is that intrafamilial sexual abuse is far more common than most people realize or are willing to say out loud. It is also one of the least reported forms of sexual violence, which means the numbers we do have are almost certainly an undercount. Of sexual abuse cases reported to law enforcement, 34% of juvenile victims were abused by a family member, and about 90% of child sexual abuse is perpetrated by someone known and trusted by the child or the child's family. Those figures only capture what gets disclosed and documented. The real prevalence is higher.

The reason it's so common comes down to many unfortunate things. Families provide the exact conditions that sexual abuse requires to take root: close physical access, built-in power imbalances, and a structural expectation of privacy that the outside world tends to respect without question. A child doesn't need to be physically threatened to feel unable to say no or to tell someone. The wish to keep the relationship intact, fear of breaking the family apart, emotional and financial dependence, and the authority of the person causing harm all act as invisible walls. Coercion in families often doesn't look like coercion from the outside, which is part of what makes it so hard to interrupt.

Grooming makes this even more complex. Grooming is the process by which a perpetrator selects a vulnerable person, gains access and isolates them, and then builds trust with the child, their family, and the surrounding community, moving the line so gradually that it becomes nearly impossible to name when the line moved at all. Within families, grooming gets woven into everyday caregiving and affection. The person causing harm is often also the person a child depends on for love, safety, and basic needs. Survivors frequently describe not being able to name what was happening even to themselves, sometimes for years. That confusion is a direct result of how grooming works, not a reflection of anything you missed or failed to do.

There is also a real mechanism behind why these patterns can carry across generations. When children grow up in homes where sexual boundaries are absent or distorted, their nervous systems develop without a clear internal template for what safe intimacy feels like. They may not have a reference point for recognizing harm because nothing in their environment named it as harm. Research consistently shows that children abused within familial contexts delay disclosure significantly longer than victims of strangers or acquaintances. A major reason is that the abuse was so embedded in ordinary family life that it took a long time to develop language for it. When distortion is never addressed and no one intervenes, the conditions for harm can persist into the next generation. This provides some context for understanding how silence compounds over time.

Finally, research shows that nearly three quarters of intrafamilial abuse survivors who did disclose reported receiving a negative reaction, with non-offending family members more likely to respond by not believing the survivor, distracting or distressing them, or retaliating. The family unit gets treated as something to preserve, and that instinct can override protecting the most vulnerable people within it. When abuse isn't reported, it isn't counted and the silence is part of what keeps the true prevalence hidden.

Thank you so much for asking this. You are not alone.