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 38 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 studies reporting escalation or tolerance, and 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 - in audio too!

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 now available too.) Visit Amazon. Wilson's proceeds go to a registered charity endeavoring to raise awareness of internet porn's effects. Here's an excerpt:

1.5 years, a whole new life

Been with you guys since mid 2016. Loved every day of it. Just wanted to share some of the things I’ve accomplished along with a before and now photo. These types of posts always used to help me. • Started rising earlier • Started exercising • Started the cold showers • Eating has become healthier over time • Started Reading more • Used a lot of the given drive at work • noticed I was being noticed by women • Found new interest in people in general

Age 22 – Lost my virginity!

Well I did it. Thought I was hopeless forever after turning down some opportunities in the past. Was a huge loner in highschool, never talked to any girls whatsoever until maybe grade 12. Fapping problem became it’s worse by then. Started nofap around college with manyyyy resets. But I knew I was heading in the right direction. Been working out 5-6 days a week ever since, acne cleared up