If someone had told me a few years ago that pain is created by the brain, I probably would have rolled my eyes. Because when you're curled up on the bathroom floor during your period, when your pelvis feels like it's being squeezed from the inside, when your back aches, your stomach hurts, and every movement feels exhausting—the last thing you want to hear is someone talking about your brain.

It sounds like they're saying the pain isn't real. That's not what neuroscience says. In fact, it's the exact opposite. Pain is always real. But pain isn't simply produced where an injury happens. It's an experience created by your brain after it processes information from your entire body. Once I understood that, it completely changed how I thought about managing my pain.

Pain isn't the same thing as damage.

We're taught from a young age that pain equals injury. You cut your finger. It hurts. Simple. But chronic pain isn't always that straightforward. Scientists now understand that the brain is constantly collecting information from nerves, muscles, joints, hormones, immune cells, previous experiences, stress levels, emotions, memories, sleep, and your environment. Then it asks one incredibly important question: "How much danger am I in right now?" Pain is one way your brain tries to protect you. Sometimes that protection matches what's happening in the body. Sometimes the alarm becomes more sensitive than the original injury. That doesn't mean the pain is fake. It means the nervous system has become better at detecting possible threats—sometimes too good.

Endometriosis is real.

Let's get something very clear. Endometriosis is a real disease. It causes real inflammation. Real tissue changes. Real pain. Nothing about learning pain neuroscience changes that. But researchers have found that the amount of endometriosis someone has doesn't always match how much pain they experience. Some people with extensive disease have relatively little pain. Others with much smaller areas of endometriosis experience severe pain every month. Why? Because pain isn't determined by lesions alone. The brain, spinal cord, immune system, hormones, and nervous system all contribute to how pain is experienced. Understanding that doesn't minimize endometriosis. It actually explains why treating it can be so complicated.

My nervous system learned pain.

One of the most hopeful things I learned is that the nervous system learns. Think about learning to ride a bike—the more you practice, the easier it becomes. Your nervous system is constantly adapting. Unfortunately, pain can also become something the nervous system learns. If pain signals travel through the same pathways over and over for months or years, those pathways can become more efficient. Researchers call this central sensitization—the nervous system becomes more responsive, the volume knob gets turned up. That doesn't mean you're imagining symptoms. It means your brain and spinal cord have become better at detecting danger, even when the level of danger hasn't increased.

Why stress made everything worse.

For years, I noticed something frustrating: during stressful weeks, my pain felt worse, my migraines happened more often, I slept poorly, everything hurt more. I used to think stress was causing my pain. Now I think it's more accurate to say stress changed how my nervous system processed pain. When we're chronically stressed, the brain becomes more focused on identifying possible threats. If your nervous system already has pain pathways firing regularly, adding stress can make those signals feel even louder. That's one reason sleep, anxiety, exercise, nutrition, and emotional health all influence chronic pain. Not because pain is psychological. Because pain is neurological.

The brain can turn the volume up—but it can also turn it down.

This might be my favorite thing I've learned. The brain has systems that amplify pain. It also has systems that reduce pain—researchers call these descending pain modulation pathways. That doesn't mean we can simply "think positive" and eliminate chronic pain. But it does mean there are things that help those systems work better: regular movement, quality sleep, stress management, treating anxiety or depression when present, physical therapy, pain education, mindfulness, social connection, and appropriate medications when needed. None of these are magic. But together, they help teach the nervous system that it doesn't always need to stay on high alert.

Strength training changed more than my muscles.

One reason I became so passionate about fitness wasn't because I wanted to look stronger. I wanted to feel stronger. Living with chronic pain can make you feel like your body is working against you. Strength training slowly changed that relationship. It reminded me that my body was capable. That movement wasn't always dangerous. That I could trust myself again. Some days I still have pain. Some workouts have to change. Some days recovery is the smartest choice. But movement became one of the ways I communicated safety back to my nervous system.

Learning about pain gave me hope.

Research has found that simply understanding how pain works can help reduce fear, improve confidence, and sometimes even reduce pain itself. That isn't because education cures disease. It's because fear changes the nervous system. If every pain flare makes you believe something terrible is happening, your brain naturally becomes more protective. When you understand what's happening, you often move differently. Breathe differently. Worry differently. Recover differently. Knowledge doesn't erase pain. But it changes your relationship with it. And sometimes that's incredibly powerful.

My biggest takeaway

Before I started studying neuroscience, I thought my brain and my pelvis were having two completely separate experiences. Now I understand they're part of the same conversation. My brain is constantly receiving information from my body. My body is constantly responding to signals from my brain. That doesn't make my endometriosis any less real. It makes it more understandable. It also gives me something I didn't have before: hope.

Because if the nervous system can learn pain, it can also learn safety. It can adapt. It can become less sensitive. Healing isn't always about finding one treatment that magically fixes everything. Sometimes it's about helping your brain and body slowly relearn that not every signal means danger. Living with endometriosis has taught me that pain is incredibly real. Studying neuroscience has taught me that pain is also incredibly complex. And somehow, understanding that complexity has made me feel less afraid of my own body.

— Rowan