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Law professor Clare McGlynn explains why it matters that incest porn has become so popular online, and what can be done about it.

Incest porn is finally facing long overdue scrutiny. The government’s porn review recommends strengthening the extreme porn law to include incest porn and mandate its removal. The review also calls for much more proactive regulation of the porn industry, and bans on misogynistic, degrading and violent pornography, including sexual strangulation.

These proposed changes address a glaring gap in regulation. While pornographic videos depicting incest porn are unlawful offline, there are no controls over its online distribution or possession. Strengthening extreme porn laws to include incest would signal a shift towards a society no longer willing to normalise and trivialise child sexual abuse and incest.

Any cursory visit today to the most popular porn websites reveals a continuous stream of incest material.

To be clear, I’m talking about porn depicting sexual activity between family members, particularly the vast swathes of material with (step)fathers and (step)brothers having sex with very young-looking girls. They may be actors over 18, but they are often in children’s clothes, surrounded by children’s toys, with pigtails, braces and other markers of childhood.

The scenarios are often about creeping into young girls’ bedrooms, coercing or grooming them into sex. The graphic titles of videos describe sex between (step)fathers and daughters. Alarmingly, they often reproduce the justifications of real-life abusers, such as “little secret between daddy and his girl”. These videos are viewed and given the thumbs up online by millions.

The new proposals target the depiction of unlawful sexual activity between family members. This includes any daddy-daughter or brother-sister scenarios as this is always a sexual offence. But it would not cover consensual sexual activity between step-parents and step-children over 18, as this is not currently unlawful. Nor would it cover instances where terms like daddy or stepmom are simply used as descriptors for older actors.

Growing popularity

Incest porn wasn’t always so common. In the 1980s, porn content studies found only 3% of material was incest-related. One of the first studies of internet porn, in 2006, found only 1% portrayed incest. But by 2014, incest porn was on Pornhub’s list of most popular searches.

My own research with colleagues revealed that one in eight titles on the homepages of the most popular porn websites described sexual violence, with sexual activity between family members the largest category of abusive content. Professor Elaine Craig’s recent study also confirms the prevalence of incest-related themes on the most popular porn platforms.

The changing business model of porn in the internet age means that the prevalence of incest porn is as much about platforms promoting it, as it is about users seeking it out. The largest porn websites use algorithmic models to maximise user engagement, keeping users hooked, collecting more data and selling more advertising. Just like social media, porn websites prioritise extreme, shocking, exploitative and divisive material, such as incest content.

Pornography writes our sexual scripts

Porn, therefore, shapes our sexual scripts, the norms we internalise about what is expected, normal and acceptable in sexual relationships. Research on sexual strangulation, for example, finds that more frequent consumption of porn leads to greater exposure to pornographic depictions of sexual strangulation which, in turn, predicted a higher likelihood of strangling sexual partners.

The largest study to date of men who have sexually offended against children found that they were 11 times more likely to watch violent porn and 27 times more likely to view bestiality porn.

Porn consumed by millions (there are 130 million visitors a day to Pornhub) necessarily shapes our social environment, and in turn our attitudes and sexual practices.

The prevalence of incest-themed content matters, as it normalises and legitimises ideas of sexual activity between family members – particularly involving young girls. When these messages are consumed by millions every day, the influence extends beyond individual users and filters into broader cultural attitudes.

In time, we may become desensitised, less likely to understand the prevalence of child sexual abuse, or its seriousness. The claim that incest porn is fantasy without real-world effects assumes incest is rare, abhorrent. But it’s not.

It’s commonplace, with 500,000 children in England and Wales sexually abused each year. These are predominantly girls, with (step)fathers accounting for up to half of the perpetrators.

From my work in this field, it is clear to me that these sexual scripts influence society in various ways, including making us less likely to believe survivors. We may blame the victims, having internalised that girls entice family members into sex. And it seems we become less concerned about government inaction on child sexual abuse as it no longer seems serious.

Time for change

Critics demand evidence of direct causation, asking for proof that watching specific videos of incest porn leads to specific acts of incest. But this narrow framing (I argue, deliberately) misses the point. Sexual violence is complex and influenced by a range of factors. No study can isolate porn as the sole cause of any particular act, nor should we expect it to.

Rejecting a direct causal relationship is not the same as rejecting any relationship. We need to ask, in a culture saturated with incest porn, are we more likely to tolerate, excuse or dismiss the realities of incest and sexual abuse? Probably – and I would argue that is enough.

If we continue to allow incest porn to proliferate, we risk perpetuating a culture that trivialises abuse, undermines survivors and distorts our understanding of what is acceptable in sexual relationships. It is time to stop debating whether pornography causes direct harm in a narrow sense, but to confront the broader reality that it is shaping our attitudes and society in profoundly damaging ways.

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