Most people think of inflammation as a temporary thing. It is the immune system’s natural response to a foreign threat to the body. You get sick or your gut flares up, you adjust some habits, and things eventually settle down. That isn’t exactly how biology works, though. Past inflammation may not come and go as you suspect. It’s possible that past inflammation can leave an imprint that can shape your health, specifically gut health, in years to come.
Recently, this idea has been gaining traction because colorectal cancer rates continue to climb, especially among younger adults who are not normally “high-risk.” Emerging data now reveals a surprising culprit, and that is the “memory” that your cells carry after inflammation seems to have healed.
How Did Researchers Discover “Memory” In Gut Cells?
A recent study aimed to help scientists understand why inflammation is linked to cancer, especially in the gut. Scientists used an animal model to trigger inflammation in the colon, which is similar to what happens in conditions like chronic colitis. They then allowed the tissue to heal, at least on the surface. Instead of stopping the study there, scientists observed individual cells. They used advanced tools to track active genes and how accessible different parts of the genome were. Additionally, they looked at how cells passed those changes down as they divided.
This level of detail is of particular interest because the body is not solely driven by DNA. The body is influenced by the epigenome, which is a layer of regulation that determines which genes are active and which are quiet. Scientists found that, even after the inflammation resolved and tissue appeared healthy again, some cells carried lasting changes in this epigenetic layer. That suggests that although the gut healed, certain cells “remembered” the inflammation.
Why Does Past Inflammation Raise Cancer Risk?
Later in the study, researchers introduced a cancer-related mutation. The cells that carried the epigenetic memory behaved differently. In fact, they activated tumor-promoting genes more quickly and developed bigger tumors that grew faster compared to cells without history. That revealed that there is a two-step process taking place. First off, inflammation leaves behind some sort of molecular imprint. Then, if a second trigger shows up later, the primed cells are more ready to respond in a way that encourages tumor growth.
That helps explain why not everyone with cancer has a clear genetic cause. Additionally, not everyone with inflammation develops cancer. The combination of past exposures and later triggers may tip the scales. Scientists note that this reinforces the idea that your past environment, including stress, diet, infections, and gut health, can shape your future risk in ways that are not yet visible.
How Can You Support Gut Health Right Now?
There is no reason to panic every time you experience inflammation, especially a mild bout. The body is designed to recover from stress, but you should know that chronic inflammation is something to take seriously, even if symptoms are not always present. Your goal should be to reduce unnecessary stress on the gut. Begin by:
- Limiting your intake of ultra-processed foods can help reduce unnecessary inflammatory responses. Pay attention to how your body reacts to certain foods!
- Engaging in regular physical activity, as research shows that it supports gut diversity and reduces systemic inflammation.
- Eating a diverse, fiber-rich diet with a lot of plant-based foods. Fiber encourages the growth of beneficial gut bacteria and helps regulate inflammation over time.
- Considering a probiotic supplement, which may help support a healthier balance of gut bacteria, especially during periods of stress or illness.
One bad meal or stressful few days will not be the end of you. This is more about patterns because the body keeps track of what it goes through. Over time, those patterns can either work for you or against you. Keep that in mind as you move forward in life.
Vincent Stevens is the senior content writer at Dherbs. As a fitness and health and wellness enthusiast, he enjoys covering a variety of topics, including the latest health, fitness, beauty, and lifestyle trends. His goal is to inform people of different ways they can improve their overall health, which aligns with Dherbs’ core values. He received his bachelor’s degree in creative writing from the University of Redlands, graduating summa cum laude. He lives in Los Angeles, CA.
