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Dr. Trish Leigh Podcast
Episode #225 :Why Does Pornography Lower Relationship Satisfaction? The Neuroscience Explained
00:19:14
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Okay. I want to talk to you about something that has become surprisingly difficult for most people to discuss. Honestly, we're talking about pornography. I know what you're thinking again, Trish. Well, what's interesting is that the conversation has shifted dramatically over the last few decades. When I first started speaking publicly a decade ago about pornography in the brain, most people weren't arguing that it was beneficial. Today, some of my own professional cohorts, likely you know who I'm talking about, are making a very different argument. They're saying that pornography is normal, healthy, potentially beneficial, even good for you. Now I understand where some of those arguments might come from. Human sexuality is incredibly complicated. Curiosity is normal. Fantasy is normal. I'm not interested in reducing any of those complexities. But as a neuroscientist, there is a question that gets lost in the debate. Because whenever I hear people arguing about whether pornography is good or bad, I find myself wondering if we're even asking the right question. I'm less interested in whether somebody approves of pornography and much more interested in understanding what it may be doing to the brain, to your brain. Because that's where things start getting really interesting. One study found that married couples who began using pornography during marriage roughly doubled their likelihood of divorce over the study period. Now, this is a clue. And clues matter, especially when researchers continue to find associations between pornography use and lower relationship satisfaction or lower sexual satisfaction. We know there's also greater emotional distance and higher relationship instability. So let me ask you something. If pornography is entirely neutral, entirely beneficial, or simply another healthy form of sexual expression, then why do these patterns keep showing up? Maybe you've even asked yourself that question. Maybe you're watching this because you've noticed something changing in your relationship. Your desire, your arousal, your connection with your partner. And hopefully you're trying to figure out why. That's the question that I want to explore with you today. Because I think people on both sides of the conversation may be missing this important fact. I think the real issue may not be pornography itself. And if that's true, then we're having the wrong conversation. This episode is brought to you by my HarperCollins published book, Mind Over Explicit Matter. Learn how artificial stimulation miswires your brain and what you can do to rewire it back to purpose, intimacy, and connection. Go to drtrishleigh.com book. Welcome, welcome, welcome. I am Dr. Trish Leigh. If you're new here, I'm a cognitive neuroscientist, brain performance expert, and someone who has spent years, decades, honestly, looking directly at how Behavior changes the brain and how the brain changes behavior. Every week I sit with people from all over the world in my office via video meetings. But these people tell me the same story over and over. They love their partner. They want their relationship to work. They aren't looking for a way out of the relationship. Yet something feels different and they can't quite explain it. Maybe that's why you're here. Maybe you still love your partner and you still find your partner attractive. Sometimes less attractive because of the impact. But also maybe nothing dramatic has happened to you. Yet somehow you have less connection, less desire, and less ease that than there was before. And if that's you, I want you to consider something very important. What if part of the answer isn't just emotional or psychological? What if it's neurological? The human brain is constantly learning. It's paying attention to what creates reward and what deserves attention in the future. Dopamine plays a major role in this process. Despite what social media often suggests, dopamine isn't bad. Dopamine is a teaching signal. It helps the brain determine what matters. The challenge is that modern life has become so saturated with stimulation. Social media, online gambling, sports betting, streaming platforms, endless scrolling, and then of course, pornography proper. They all compete for the same reward circuitry. Many of these experiences function as what neuroscientists call supernormal stimuli, meaning they provide very high levels of novelty and stimulation that far exceed what the human brain has evolved around. When something is highly stimulating, the brain adapts. That's what healthy brains do. Over time, the nervous system becomes more responsive to what it experiences most. When often, as a result, what once felt exciting begins to feel ordinary, the threshold shifts. The brain starts expecting a higher level of stimulation than it once did. And this is where I think many people misunderstand the conversation. Most people assume the issue is attraction or desire. They think, maybe I just don't find my partner attractive anymore. But in my experience, I. Attraction and desire are often not the primary issue. The deeper question is where the brain has learned to direct desire, attention and attachment. Now, sexual desire isn't simply about arousal. It's one of the ways that human beings bond. During sexual desire and intimacy, the brain releases a powerful blend of neurochemicals that help to connect pleasure, reward, attachment, and emotional closeness. In healthy relationships, those pathways become increasingly linked to a real person. Your partner becomes associated with comfort, excitement, desire, and connection. The brain strengthens those associations over time. With repetition, pornography introduces something the human brain never evolved for. The reward system receives the neurochemical flood Associated with sexual desire. While attention is directed toward an endless stream of novel people on a screen fantasy. Gradually the brain begins associating excitement and anticipation with novelty itself, rather than consistently reinforcing the connection with your real life partner. So in other words, the chemical flood that was designed to strengthen connection with a partner, well, it can gradually be redirected at very high levels toward the people being consumed on the screen. That's why I don't think this is simply a conversation about arousal. I think this is also a conversation about attachment. This is what I mean when I talk about the mis wire. Not because someone consciously chooses it, not because they're trying to disconnect from the person that they love, but because the brain is always learning and whatever gets practiced becomes easier. Now, one reason I think this conversation matters is because for some people, the consequences don't first show up as relationship dissatisfaction. They show up sometimes as sexual arousal dysfunction, what I call sad. Over the years, I've worked with countless men who love their wives, love their girlfriends, wanted intimacy, and wanted their relationships to thrive, yet found themselves struggling with arousal, performance or sexual engagement. And what made it so confusing was that attraction and desire really wasn't the problem. Love wasn't the problem. They still cared deeply about their partner and wanted the relationship to succeed. The issue was that their brains had become conditioned to a different source of stimulation. When the reward system spends years pairing sexual arousal with endless novelty, constant variety and hyper stimulating content, it can become desensitized to the levels of stimulation available in real life. Not because a partner becomes less attractive, and not because your relationship stopped mattering to you, but because your brain has adapted to that level of stimulation. That's what brains do. This is why I call it sexual arousal dysfunction rather than simply ED or erectile dysfunction. The issue often starts upstream in the reward system itself. The brain has learned one pattern of arousal and struggles when those conditions aren't present. And if that sounds familiar, I want you to hear something very important. Open your ears. Okay. It doesn't mean you're broken. It means that your brain has learned something. And what your brain has learned, it can unlearn. And it can relearn something new. That is the rewire. Now, I worked with a man who genuinely loved his wife. He was a good man, dedicated husband, deeply committed to his family. During one of our conversations, he said something that stayed with me. I. He looked at me and he said, I thought I was just tired. That was how he explained what was happening. Work, stress, kids, responsibilities, life. Trust me, I know. But eventually his wife started asking questions. Why had he stopped initiating intimacy? Why did he seem so emotionally distant? Why did connection feel different off? What fascinated me was that he genuinely didn't understand it himself. He loved her. He found her attractive. He really wanted his marriage more than anything. The problem wasn't that he stopped caring. His reward system had simply adapted to a different pattern. As we talked through some of his habits, it became really clear that novelty had gradually become more neurologically compelling than connection. He wasn't consciously rejecting his wife. His brain had become accustomed to a different source of stimulation. That distinction matters very much because many people don't lose desire or attraction. They lose sensitivity. So think of it like this. If you consume highly sweetened foods all day long, candy, right? Fruit doesn't taste as sweet anymore. The fruit doesn't change. It hasn't changed. Your experience of it has changed. I think relationships work in the same way many times, especially when desensitization is at play. The issue isn't always that something's valuable, disappeared. Sometimes the issue is that the brain has become less responsive to the things that once felt meaningful. That connection is what changed. Now. This is where I found myself thinking about something completely different. Now, if you know what I'm going to say, this sounds like me, right? A couple of weeks ago, my family and I went to see the new Mandalorian movie. If you have seen on my Instagram, my son Seamus, who is in film studies. He basically makes it so that when we. We. We do family outings, they mostly include movies. So he loves movies. There was a big release. We go. So we all end up going to the new Mando movie together. And of course, while I'm watching the movie, I found myself thinking about why that character of Mando resonates with people so much. It certainly isn't because he's the loudest person in the room. I know. This is why I love him. What makes Mando compelling is that he's guided by a code. He operates from integrity. He does what needs to be done, even when nobody's watching. I love that he isn't constantly chasing applause, attention, or validation. And honestly, I think that's one of the reasons people connect with him. Deep down, we know meaningful lives aren't built by chasing every impulse that appears in front of us. They are built through consistency, commitment, and alignment with our own values. I think that's where the conversation intersects with neuroscience. Your reward system. It doesn't care. It does not care about your goals. It doesn't care about the promises that you've made to yourself or the vision that you have for your future life. You know what it responds to? Repetition. That's it. Over and over and over. Whatever gets repeated gets reinforced. Eventually, the brain begins favoring the pathways it practices most often. Remember that next time you're repeating a behavior. So here's the question I want you to sit with. What happens if your brain spends years, decades, for some people, practicing novelty while your relationship requires consistency? What happens if your reward system becomes exceptionally good at chasing the next thing, the next thing that makes it feel good, while intimacy asks you to stay present with the person already sitting beside you? I don't think we fully answered that question yet, do you? But I think it's a really, really important one. Because I don't know anyone who wakes up one day and says, I hope I slowly train my brain away from intimacy. That is not how it happens. It's gradual. It's subtle, it's insidious. It's often visible until the consequences begin showing up in your life and namely, your relationship. But if I'm being honest, I don't think pornography is what creates the very deepest wounds in most relationships. You know what it is. I think the secrecy does. Because secrecy changes relationships in ways most people underestimate. Sometimes the deepest injury isn't the behavior itself. It's the concealment. It's the uncertainty. It's the realization that reality may not be what you thought it was. Maybe you've experienced that yourself. You've looked at your partner and you thought, something feels different, but I can't put my thumb on it. Or maybe you've been the one keeping something hidden. Many of my clients have. Convincing yourself it wasn't important enough to matter or not having the skills to have the conversation. Either way, secrecy changes the emotional environment of a relationship. And the problem is that secrecy rarely stays contained. Once trust begins eroding, safety becomes less certain. Emotional connection weakens. Both people begin filling the gaps with stories that may not be true. One person wonders if they're no longer desired. The other convinces themselves everything is fine. Does this sound familiar? Meanwhile, distance quietly grows between them. This is where neuroscience becomes incredibly helpful. Because betrayal isn't experienced as merely emotional pain, the brain interprets betrayal as a threat to attachment, safety, and certainty. That's one reason betrayed partners often describe feeling as though they've been physically injured. Their nervous system is responding to a perceived threat, to one of the most important bonds that they know. Pair bonding. I think this explains why some couples recover and Rebuild a relationship that's authentic while others remain stuck for years. We're going to unpack that in much greater depth in the future. But let's come back to the question we started with. What if pornography isn't actually the main issue? What if the deeper issue is what your brain has been practicing all along? Because every single day your nervous system is rehearsing something. It's rehearsing what gets your attention. It's rehearsing what creates desire. And it's rehearsing what feels rewarding, most rewarding to it. And over time, those rehearsals become habits, those habits become pathways. And those neural pathways quietly shape the quality of your relationships. That is neuroscience, not judgment. Your brain adapted with that, my friend, is what brains do. But of course, the hopeful part is that what gets miswired, in fact, can be rewired. Sensitivity can return. Connection, presence, intimacy, true real world desire. But first, you have to be willing to be brutally honest with yourself with this question. Get out your journal and think about it. When what has my brain been rehearsing? Whatever your brain practices, it gets better at. And next week we're going to talk about something I think is even more important than pornography. Why secrecy changes the brain. Why betrayal feels physical within a coupleship. And why two couples can experience the exact same event and end up with completely different outcomes. I think that's one of the most misunderstood conversations in relationship neuroscience. And honestly, it's where the story gets really, really interesting. Until next time, drop your comments, tell me what's on your mind, and always remember to control your brain or it will control you. I'll see you next time.