If you think consuming porn can’t affect your brain, think again. Studies show that porn can literally change the consumer’s brain, but not for the better. Moral of the story? Watching definitely isn’t worth it.

For many people, watching porn is something they think they can separate from the rest of their life. It may seem like someone’s browser history and life in the real world can be totally isolated from each other, but that’s not exactly how it works. Our brain doesn’t exactly compartmentalize what we like to watch online with what we like in real interactions.

Believe it or not, studies show that those who consume pornography more frequently have brains that are less connected, less active, and even smaller in some areas. [1]

To be fair, the studies only show that there’s a correlation between porn consumption and smaller, less active brains, but they raise the question: Can porn literally change your brain?

The short answer: yes.

Scientists used to believe that once you finished childhood, your brain lost the ability to grow. [2] They thought that nothing except illness or injury could physically alter an adult brain. Now we know that the brain goes on changing throughout life, [3] constantly rewiring itself and laying down new nerve connections, and that this is particularly true in our youth. [4]

See, the brain is made up of about 100 billion special nerves called neurons, [5] that carry electrical signals back and forth between parts of the brain and out to the rest of the body. Imagine you’re learning to play an E chord on the guitar: your brain sends a signal to your hand telling it what to do. As that signal zips along from neuron to neuron, those activated nerve cells start to form connections because “neurons that fire together, wire together.” Those newly-connected neurons form what’s called a “neuronal pathway.” [6]

Think of a neuronal pathway like a trail in the woods. Every time someone uses the trail, it gets a little wider and more permanent. Similarly, every time a message travels down a neuronal pathway, the pathway gets stronger. [7] With enough repetitions, your neuronal pathway will get so strong you’ll be strumming that E chord without even thinking about it. That process of building better, faster neuronal pathways is how we learn any new skill, whether it’s memorizing math formulas or driving a car. Practice makes perfect.

Related: Cambridge Neuroscientists Find Striking Similarities in Brains of Porn and Drug Addicts

But there’s a catch. Your brain is a very hungry organ. It may only weigh 2% of your body weight, but it eats up 20% of your energy and oxygen, [8] so resources are scarce up there in your head. There’s some pretty fierce competition between brain pathways, and those that don’t get used enough will likely be replaced. [9] Use it or lose it, as they say. Only the strong survive.

That’s where porn comes in.

Porn happens to be fantastic at forming new, long-lasting pathways in the brain. In fact, porn is such a ferocious competitor that hardly any other activity can compete with it, including actual sex with a real partner. [10] That’s right, porn can actually overpower the brain’s natural ability to have real sex! Why? As Dr. Norman Doidge, a researcher at Columbia University, explains, porn creates the perfect conditions and triggers the release of the right chemicals to make lasting changes in the brain. [11]

Conditions

The ideal conditions for forming strong neuronal pathways are when you’re in what scientists call “flow.” Flow is “a deeply satisfying state of focused attention.” [12] When you’re in flow, you get so deep into what you’re doing that nothing else seems to matter. [13] You’ve probably experienced it before, playing a game or having a conversation with friends or reading a great book. You were so focused on what you were doing that you lost track of time, and everything around you disappeared. You wanted it to keep going forever. That’s flow.

When you’re in flow, it’s like you have superhuman abilities. Athletes call it being “in the zone,” when you seem to do everything right. Your focus is intense. Your memory is phenomenal. Years later, you’ll still recall exact words of the conversation or details of what you read.

Now imagine someone sitting in front of the computer at 3:00 in the morning, looking at porn. That person is so absorbed in his or her porn trance that nothing else can compete for the consumer’s attention, not even sleep. This person is in the ideal condition for forming neuronal pathways, and that’s what they are doing. Clicking from page to page in search of the perfect image, not realizing that every image seen is reinforcing the pathways the consumer is forging in his or her brain. By now, those images are burned so deeply into their mind that they will remember them for a long time to come, maybe the entirety of their life.

Chemicals

Like other addictive substances and behaviors, porn activates the part of the brain called the reward center, [14] triggering the release of a cocktail of chemicals that give you a temporary buzz. [15] (See How Porn Affects The Brain Like a Drug.) One of the chemicals in that cocktail is a protein called DeltaFosB. [16]

Remember when we said that building neuronal pathways is like making a trail in the woods? Well, DeltaFosB is like a troop of mountaineers out there with picks and shovels, working like beavers to groom the trail. With DeltaFosB floating around, the brain is primed to make strong mental connections between the porn being consumed by individuals and the pleasure they feel while consuming. [17] Basically, the DeltaFosB is saying, “This feels good. Let’s be sure to remember it so we can do it again.”

Related: How Porn Twisted My Sexuality

DeltaFosB is important for learning any kind of new skills, but it can also lead to addictive/compulsive behaviors, [18] especially in adolescents. [19] DeltaFosB is referred to as “the molecular switch for addiction,” [20] because if it builds up enough in the brain, it switches on genes that create long-term cravings, driving the user back for more. [21] And once it has been released, DeltaFosB sticks around in the brain for weeks or months, which is why porn consumers may feel strong cravings for porn long after they’ve stopped the habit. [22]

The Good News

The good news is, neuroplasticity works both ways. If porn pathways aren’t reinforced, they’ll eventually disappear, so the same brain mechanisms that lay down pathways for porn can replace them with something else. [23] If the time has come for you or someone you love to begin that healing process, learn more about how to get help.

Bottom line:

Porn can alter the brain and desensitize it to be okay with unhealthy behaviors. Unlike real, meaningful relationships, porn never satisfies; it only increases the appetite for more porn. Bottom line—watching porn isn’t a harmless activity. It has the potential to lead a viewer down a path they never intended to go. It’s just not worth it.

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Citations

1] Love, T., Laier, C., Brand, M., Hatch, L., & Hajela, R. (2015). Neuroscience Of Internet Pornography Addiction: A Review And Update, Behavioral Sciences, 5(3), 388-433. Doi: 10.3390/Bs5030388; Kuhn, S., & Gallinat, J. (2014). Brain Structure And Functional Connectivity Associated With Pornography Consumption: The Brain On Porn. JAMA Psychiatry, 71(7), 827-834. Doi:10.1001/Jamapsychiatry.2014.93; Love, T., Laier, C., Brand, M., Hatch, L., & Hajela, R. (2015). Neuroscience Of Internet Pornography Addiction: A Review And Update, Behavioral Sciences, 5(3), 388-433. Doi: 10.3390/Bs5030388; Wehrum-Osinski, S., Klucken, T, & Rudolf, S. (2015) OR-95: Neuronal And Subjective Responses In Patients With Excessive Pornography Consumption, Journal Of Behavioral Addictions, 4(S1), 42; Arnow, B. A., Et Al. (2002). Brain Activation And Sexual Arousal In Healthy, Heterosexual Males. Brain, 125, 1014-1023. Doi:10.1093/Brain/Awf108. See Also Kuss, D., & Griffiths, M. D. (2012). Internet And Gaming Addiction: A Systematic Literature Review Of Neuroimaging Studies, Brain Science, 2(3) 347-374. Doi:10.3390/Brainsci2030347 (Discussing Brain Atrophy Among Persons Addicted To Internet Use.)
[2] Doidge, N. (2007). The Brain That Changes Itself. (Xiiv-Xiv) New York: Penguin Books; Kolb, B., Gibb, R., & Robinson, T.E. (2003). Brain Plasticity And Behavior, Current Directions In Psychological Science, 12(1) 1-5.
[3] Pace, S. (2014). Acquiring Tastes Through Online Activity: Neuroplasticity And The Flow Experiences Of Web Users. M/C Journal, 17(1). Retrieved From Http://Journal.Media-Culture.Org.Au/Index.Php/Mcjournal/Article/View/773
[4] Kercel, S.W., (2005). Editorial: The Wide-Ranging Impact Of The Work Of Paul Back-Y-Rita, Journal Of Integrative Neuroscience, 4(4) 403-406; Doidge, N. (2007). The Brain That Changes Itself. (Xv) New York: Penguin Books.
[5] Doidge, N. (2007). The Brain That Changes Itself. (50) New York: Penguin Books.
[6] Doidge, N. (2007). The Brain That Changes Itself. (9) New York: Penguin Books.
[7] Doidge, N. (2007). The Brain That Changes Itself. (242-243) New York: Penguin Books.
[8] Du, F., Et Al. (2008). Tightly Coupled Brain Activity And Cerebral ATP Metabolic Rate. Proceedings Of The National Academy Of Sciences Of The United States Of America, 105(17) 6409-6414. Doi:10.1073/Pnas.0710766105, See Also Spence, C., Okajima, K., Cheok, A. D., Petit, O., & Michel, C. (2016). Eating With Our Eyes: From Visual Hunger To Digital Satiation, Brain And Cognition, 110, 53-63. Doi:10.1016/J.Bandc.2015.08.006 (Asserting That The Brain Consumes “Somewhere In The Region Of 25% Of Blood Flow, Or Rather, 25% Of The Available Consumed Energy.”)
[9] Pace, S. (2014). Acquiring Tastes Through Online Activity: Neuroplasticity And The Flow Experiences Of Web Users. M/C Journal, 17(1). Retrieved From Http://Journal.Media-Culture.Org.Au/Index.Php/Mcjournal/Article/View/773; Doidge, N. (2007). The Brain That Changes Itself. (59-60) New York: Penguin Books.
[10] Park, B. Y., Et Al. (2016). Is Internet Pornography Causing Sexual Dysfunctions? A Review With Clinical Reports. Behavioral Sciences, 6, 17. Doi:10.3390/Bs6030017; Volkow, N. D., Koob, G. F., & McLellan, A. T. (2016). Neurobiological Advances From The Brain Disease Model Of Addiction. New England Journal Of Medicine, 374, 363-371. Doi:10.1056/NEJMra1511480; Love, T., Laier, C., Brand, M., Hatch, L., & Hajela, R. (2015). Neuroscience Of Internet Pornography Addiction: A Review And Update, Behavioral Sciences, 5(3), 388-433. Doi: 10.3390/Bs5030388; Voon, V., Et Al. (2014). Neural Correlates Of Sexual Cue Reactivity In Individuals With And Without Compulsive Sexual Behaviors, PLoS ONE, 9(7), E102419. Doi:10.1371/Journal.Pone.0102419; Hilton, D. L. (2013) Pornography Addiction—A Supranormal Stimulus Considered In The Context Of Neuroplasticity. Socioaffective Neuroscience And Technology 3. 20767. Doi:10.3402/Snp.V3i0.20767; Wang, Y., Ghezzi, A., Yin, J. C. P., & Atkinson, N. S. (2009). CREB Regulation Of BK Channel Gene Expression Underlies Rapid Drug Tolerance. Gene Brains Behavior, 8(4) 369-376. Doi:10.1111/J.1601-183X.2009.00479.X; Angres, D. H. & Bettinardi-Angres, K. (2008). The Disease Of Addiction: Origins, Treatment, And Recovery. Disease-A-Month 54: 696–721.
[11] Doidge, N. (2007). The Brain That Changes Itself. (104) New York: Penguin Books. ; [11]Doidge, N. (2007). The Brain That Changes Itself. (102) New York: Penguin Books.
[12] Pace, S. (2014). Acquiring Tastes Through Online Activity: Neuroplasticity And The Flow Experiences Of Web Users. M/C Journal, 17(1). Retrieved From Http://Journal.Media-Culture.Org.Au/Index.Php/Mcjournal/Article/View/773
[13] Pace, S. (2014). Acquiring Tastes Through Online Activity: Neuroplasticity And The Flow Experiences Of Web Users. M/C Journal, 17(1). Retrieved From Http://Journal.Media-Culture.Org.Au/Index.Php/Mcjournal/Article/View/773; Csikszentmihalyi, M. (1990). Flow: The Psychology Of Optimal Experience. New York, HarperPerrennial.
[14] Negash, S., Van Ness Sheppard, N., Lambert, N. M., & Fincham, F. D. (2016). Trading Later Rewards For Current Pleasure: Pornography Consumption And Delay Discounting. The Journal Of Sex Research, 53(6), 698-700. Doi:10.1080/00224499.2015.1025123; Voon, V., Et Al. (2014). Neural Correlates Of Sexual Cue Reactivity In Individuals With And Without Compulsive Sexual Behaviors, PLoS ONE, 9(7), E102419. Doi:10.1371/Journal.Pone.0102419; Pitchers, K. K., Et Al. (2013). Natural And Drug Rewards Act On Common Neural Plasticity Mechanisms With DeltaFosB As A Key Mediator. Journal Of Neuroscience, 33(8), 3434-3442. Doi:10.1523/JNEUROSCI.4881-12.2013
[15] Volkow, N. D., Koob, G. F., & McLellan, A. T. (2016). Neurobiological Advances From The Brain Disease Model Of Addiction. New England Journal Of Medicine, 374, 363-371. Doi:10.1056/NEJMra1511480; Pace, S. (2014). Acquiring Tastes Through Online Activity: Neuroplasticity And The Flow Experiences Of Web Users. M/C Journal, 17(1). Retrieved From Http://Journal.Media-Culture.Org.Au/Index.Php/Mcjournal/Article/View/773
[16] Pitchers, K. K., Et Al. (2013). Natural And Drug Rewards Act On Common Neural Plasticity Mechanisms With DeltaFosB As A Key Mediator. Journal Of Neuroscience, 33(8), 3434-3442. Doi:10.1523/JNEUROSCI.4881-12.2013; Nestler, E. J., (2008) Transcriptional Mechanisms Of Addiction: Role Of DeltaFosB, Philosophical Transactions Of The Royal Society B: Biological Sciences, 363(1507) 3245-3255. Doi:10.1098/Rstb.2008.0067
[17] Pitchers, K. K., Et Al. (2013). Natural And Drug Rewards Act On Common Neural Plasticity Mechanisms With DeltaFosB As A Key Mediator. Journal Of Neuroscience, 33(8), 3434-3442. Doi:10.1523/JNEUROSCI.4881-12.2013; Hilton, D. L. (2013) Pornography Addiction—A Supranormal Stimulus Considered In The Context Of Neuroplasticity. Socioaffective Neuroscience And Technology 3. 20767. Doi:10.3402/Snp.V3i0.20767; Doidge, N. (2007). The Brain That Changes Itself. (208-209) New York: Penguin Books.
[18] Love, T., Laier, C., Brand, M., Hatch, L., & Hajela, R. (2015). Neuroscience Of Internet Pornography Addiction: A Review And Update, Behavioral Sciences, 5(3), 388-433. Doi: 10.3390/Bs5030388; Hilton, D.L, & Watts, C. (2011). Pornography Addiction: A Neuroscience Perspective, Surgical Neurology International 2, 19. Doi:10.4103/2152-7806.76977; Nestler, E. J., (2008) Transcriptional Mechanisms Of Addiction: Role Of DeltaFosB, Philosophical Transactions Of The Royal Society B: Biological Sciences, 363(1507) 3245-3255. Doi:10.1098/Rstb.2008.0067
[19] Volkow, N. D., Koob, G. F., & McLellan, A. T. (2016). Neurobiological Advances From The Brain Disease Model Of Addiction. New England Journal Of Medicine, 374, 363-371. Doi:10.1056/NEJMra1511480; Park, B. Y., Et Al. (2016). Is Internet Pornography Causing Sexual Dysunction? A Review With Clinical Reports, Behavioral Sciences, 6, 17. Doi:10.3390/Bs6030017; Negash, S., Van Ness Sheppard, N., Lambert, N. M., & Fincham, F. D. (2016). Trading Later Rewards For Current Pleasure: Pornography Consumption And Delay Discounting. The Journal Of Sex Research, 53(6), 698-700. Doi:10.1080/00224499.2015.1025123; Brom, M., Both, S., Laan, E., Everaerd, W., & Spinhoven, P. (2014). The Role Of Conditioning, Learning, And Dopamine In Sexual Behavior: A Narrative Review Of Animal And Human Studies. Neuroscience & Biobehavioral Reviews, 38(1). Doi: 10.1016/J.Neubiorev.2013.10.014; Bridges, A. J., & Anton, C. (2013). Pornography And Violence Against Women. In Sigal, J. A. & Denmark, F. L. (Eds.), Violence Against Girls And Women: International Perspectives (Pp 183-206.). Santa Barbara, California: Preager.
[20] Love, T., Laier, C., Brand, M., Hatch, L., & Hajela, R. (2015). Neuroscience Of Internet Pornography Addiction: A Review And Update, Behavioral Sciences, 5(3), 388-433. Doi: 10.3390/Bs5030388
[21] Volkow, N. D., & Morales, M. (2015). The Brain On Drugs: From Reward To Addiction. Cell, 162 (8), 713. Doi:10.1016/J.Cell.2015.07.046; Nestler, E. J. (2012). Transcriptional Mechanisms Of Drug Addiction. Clinical Psychopharmacology And Neuroscience 10(3) 136-143. Doi:1-.9758/Cpn.2012.10.3.136; Hyman, S. E. (2005). Addiction: A Disease Of Learning And Memory. American Journal Of Psychiatry, 162(8), 1414-1422.
[22] Negash, S., Van Ness Sheppard, N., Lambert, N. M., & Fincham, F. D. (2016). Trading Later Rewards For Current Pleasure: Pornography Consumption And Delay Discounting. The Journal Of Sex Research, 53(6), 698-700. Doi:10.1080/00224499.2015.1025123; Hilton, D. L., & Watts, C. (2011). Commentary On: Neuroscience Research Fails To Support Claims That Excessive Pornography Consumption Causes Brain Damage, Surgical Neurological International, 2, 64. Doi:10.4103/2152-7806.81427; Nestler, E. J., (2008) Transcriptional Mechanisms Of Addiction: Role Of DeltaFosB, Philosophical Transactions Of The Royal Society B: Biological Sciences, 363(1507) 3245-3255. Doi:10.1098/Rstb.2008.0067
[23] Doidge, N. (2007). The Brain That Changes Itself. (208-212) New York: Penguin Books.

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