Your Brain on Porn

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Start here: Evolution has not prepared your brain for today's porn

This article is a short synopsis of some key concepts. For the science behind it, please follow all the links and read this page. Some links go to our articles, which in turn link to studies. For a more in-depth understanding and further evidence see The Research Page. For specific content explore Porn FAQs.

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What happens when you drop a male rat into a cage with a receptive female rat? First, you see a frenzy of copulation. Then, progressively, the male tires of that particular female. Even if she wants more, he has had enough. However, replace the original female with a fresh one, and the male immediately revives and gallantly struggles to fertilize her. You can repeat this process with fresh females until he is completely wiped out.

This is called the Coolidge effect—the automatic response to novel mates. Interestingly, men ejaculate more motile sperm and they do it more quickly when they view a novel porn star. This powerful automatic response to erotic novelty is what started you down the road to getting hooked on internet porn.

Studies linking porn use or porn/sex addiction to sexual dysfunctions, lower arousal, and lower sexual & relationship satisfaction

Reality Check - Regardless of what you may read in some journalistic accounts, multiple studies reveal a link between porn use and sexual performance problems, relationship and sexual dissatisfaction, and reduced brain activation to sexual stimuli.

Let's start with sexual dysfunctions. Studies assessing young male sexuality since 2010 report historic levels of sexual dysfunctions, and startling rates of a new scourge: low libido. Documented in this lay article and in this peer-reviewed paper involving 7 US Navy doctors - Is Internet Pornography Causing Sexual Dysfunctions? A Review with Clinical Reports (2016)

Brain Studies on Porn Users

This page lists all the studies assessing the brain structure and functioning of Internet porn users. To date every study offers support for the porn addiction model (no studies falsify the porn addiction model). The results of these 37 neurological studies (and upcoming studies) are consistent with 260+ Internet addiction "brain studies", many of which also include internet porn use. All support the premise that internet porn use can cause addiction-related brain changes, as do these 13 recent neuroscience-based reviews of the literature:

Studies linking porn use to poorer mental-emotional health & poorer cognitive outcomes

Many individuals who cease using porn for an extended period of time report mental and cognitive benefits, such as improved concentration and focus, better grades, increased energy and motivation, social anxiety improved or gone, increased confidence, improved mood, depression reduced or gone, greater desire to be social, more intense or vibrant emotions, and increased desire to be in a loving relationship.

Gary's TEDx talk - "The Great Porn Experiment" (2012)

Captions also available for other languages, including 한국의, Chinese, Português, Czech, Deutsch, Estonian, עברית, Hungarian, Italian, Polski, Serbian, Slovak. Vietamese. To see them, click on the 'YouTube' logo to watch on YOUTube. Then, when you get there, click on "CC" for captions (bottom right of screen). Ver YBOP series in Español. Make captions in your own language!

New edition of "Your Brain on Porn" book now out! (December, 2017)

The 2nd edition of Your Brain on Porn: Internet Pornography and the Emerging Science of Addiction is now out. It's revised, a bit longer, and has more citations and up-to-date research. More (Audio version also on the way.) Visit Amazon. Wilson's proceeds go to a registered charity endeavoring to raise awareness of internet porn's effects. Here's an excerpt:

Your Brain on Porn Book now available in Arabic!

Your Brain on Porn by Gary Wilson is now available in the Arabic language as a PDF format ebook. (Detailed description at that link.) It can be purchased with a credit card or via Paypal, and Wilson's proceeds go to a charity raising awareness about porn's effects.

اشتر نسختك الإلكترونيّة بصيغة PDF عن طريق "باي بال" (Paypal) أو باستخدام بطاقة ائتمان

Age 19 - 7 months into reboot I have fixed my severe erectile dysfunction & depression, but developed a "porn phobia"

I'm 7 months into reboot... I have fixed my severe erectile dysfunction and depression but I have developed a strong Porn phobia (anything related to Porn starts panic attacks). To fix this problem, I have decided to not hide from soft Porn anymore (neither seek it).