Colorectal Cancer Is Rising in Younger Adults: Here’s What You Need to Know



March is National Colorectal Cancer Awareness Month, and this year, the conversation feels different and more urgent. While colorectal cancer has traditionally been thought of as a disease affecting older adults, we are seeing a steady rise in cases among younger individuals. Stories like these are no longer rare headlines, rather they are becoming part of a broader and concerning trend.

Let’s start with the big picture. The majority of colorectal cancer cases and deaths still occur in adults over the age of 65. However, among younger adults, while overall risk remains relatively low, the rate is increasing and that’s what has caught the attention of researchers, clinicians, and public health experts alike.

Because of this shift, screening guidelines changed in 2021. Average-risk adults are now recommended to begin screening at age 45 instead of 50. This change reflects a growing recognition that earlier detection can save lives.

Why Is This Happening?

The honest answer is: we don’t fully know yet. But in epidemiology, this pattern is often referred to as a “cohort effect,” meaning that changes in environment and lifestyle (rather than genetics alone) are likely driving the trend.

Some of the leading factors being explored include:

  • Diets high in ultra-processed foods
  • Low fiber intake (only about 5-6% of Americans meet recommendations)
  • Obesity and metabolic dysfunction
  • Sedentary lifestyles
  • Changes in the gut microbiome

It’s likely not just one cause, but a combination of these factors over time that influence inflammation, gut health, and metabolic balance.

What You Can Do Right Now

If you are 45 or older, make screening a priority. You have options:

  • At-home FIT test (annually)
  • At-home stool DNA test (every 3 years, like Cologuard)
  • Colonoscopy (every 10 years)

If any at-home test is positive, a colonoscopy is the next step.

If you are under 45, your focus should be on awareness and advocacy:

  • Know your family history
  • Pay attention to symptoms (blood in stool, persistent bowel changes, unexplained weight loss, fatigue)
  • Add a fiber supplement to your diet
  • Speak up and seek evaluation if something feels off

The Role of Lifestyle: Where Prevention Lives

While no strategy guarantees prevention, there are meaningful ways to reduce risk and many of them start in the gut.

One of the most overlooked factors? Fiber.

Fiber is not just about digestion. It plays a critical role in:

  • Supporting a healthy microbiome
  • Regulating blood sugar and insulin
  • Reducing inflammation
  • Supporting detoxification and hormone balance
  • Promoting regular bowel movements (which helps eliminate waste and toxins efficiently)

In addition to increasing fiber, consider these foundational habits:

  • Eat a diverse, nutrient-dense diet (think: colorful plants, whole foods, variety) – check out my latest podcast episode for more information on this
  • Move your body regularly
  • Limit alcohol intake
  • Support your metabolic health

These are not quick fixes but they are powerful, cumulative investments in your long-term health.

A Final Thought

Colorectal cancer awareness isn’t about creating fear, it’s about creating agency.

It’s about understanding what’s changing, recognizing what’s within your control, and making small, intentional shifts that support your body over time.

Because prevention isn’t something we think about later, it’s something we build every single day.


video preview

In this episode of Intentional Living with Emlah, I sit down again with Dr. Lara Zakaria to explore the powerful role of fiber and phytonutrients in whole-person health. We break down why “eating the rainbow” is more than a trend, it’s a practical way to nourish your microbiome, balance blood sugar, support heart health, and even influence gene expression through epigenetics. With nearly 98% of Americans not getting enough fiber, we discuss simple, actionable ways to increase intake, improve metabolic health, and shift from restriction to nourishment. The takeaway is simple: when we combine colorful, fiber-rich foods with protein, we create a foundation for lasting health and vitality.


These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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Intentional Living Newsletter

This newsletter will offer periodic health updates, suggestions and research alongside my own challenges, joys and struggles. I will offer advice regarding fun practical ideas for lifestyle changes, proper nutrition, supplementation and mindful living as we seek to live our precious lives as healthfully as possible.

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