Rising Colorectal Cancer Rates Among Children and Teens

Colorectal cancer in young people

Fast Facts

Significant Increase: Colorectal cancer rates among individuals aged 10-24 have surged significantly from 1999 to 2020

Not Just Older Adults: Traditionally seen in older adults, colorectal cancer is now increasingly affecting younger demographics

Symptoms to Watch: Common symptoms include blood in the stool, persistent constipation, thin stools, and unexplained weight loss

Known Risk Factors: Obesity, diet high in processed foods, sedentary lifestyle, alcohol consumption, and smoking are known risk factors

Need for Research: The exact reasons behind this trend remain unclear, necessitating further research.

Colorectal cancer rates among children as young as 10 have risen significantly over the past two decades, new research indicates. Presented at the Digestive Disease Week 2024 conference, the study highlights a notable increase in colorectal cancer incidence among individuals aged 10 to 44 between 1999 and 2020, with the most significant spikes observed in those aged 10 to 24.

“The increasing rates among younger demographics highlight the need for enhanced vigilance and early detection strategies across all age groups,” said Dr. Islam Mohamed, an internal medicine resident physician at the University of Missouri-Kansas City and the study’s lead author.

Rising Incidence and Unclear Causes

While the rise in colorectal cancer cases among young people has been documented, the reasons behind this trend remain unclear. “Despite extensive research, we still don’t know why more young people are developing colorectal cancer now compared to 30 or 40 years ago,” stated Dr. Suneel Kamath, a gastrointestinal oncologist at the Cleveland Clinic.

This new study underscores the need for further investigation into the factors contributing to the rise in colorectal cancer among younger populations. Dr. Kamath emphasized, “The myth that someone can be too young to get cancer is just not true. We need to be vigilant and invest more in researching environmental, dietary, and lifestyle factors to identify potential carcinogens causing this increase.”

Key Findings from the Study

Dr. Mohamed’s team aimed to examine trends within younger age cohorts to understand these changing dynamics. Utilizing data from the CDC Wonder database, which provides publicly available information on mortality, cancer incidence, census data, and more, the team tracked colorectal cancer incidence rates from 1999 to 2020 across seven age cohorts, ranging from 10 to 44 years old.

Their analysis revealed that colorectal cancer rates rose across all age groups, with younger demographics experiencing a sharper increase. Although middle-aged and older adults remain more likely to develop colorectal cancer, the rate of increase has been slower compared to younger populations. For instance, incidence rates for individuals aged 40-44 rose from 14.6 per 100,000 in 1999 to 20 per 100,000 in 2020. For the 15-19 age group, incidence rates increased from 0.3 per 100,000 to 1.3 per 100,000 over the same period.

Known Risk Factors and Unexplained Trends

Established risk factors for colorectal cancer, such as obesity, a diet high in processed foods and red meats, sedentary lifestyle, excessive alcohol consumption, and smoking, are believed to apply across all age groups. However, these factors alone do not fully explain the rising incidence among younger populations. Dr. Hina Saeed, deputy director of radiation oncology at the Lynn Cancer Institute, suggested that environmental factors and genetic conditions like Lynch syndrome, as well as family history, could also play a role.

Addressing the Trend and Moving Forward

Despite the concerning rise in colorectal cancer cases among young people, the study does not yet advocate for routine screening of children for the disease. “While the number of cases in young people has been steadily increasing over the past 20 to 30 years, it is still not frequent enough to warrant widespread screening,” said Dr. Kamath. However, he highlighted the importance of increased awareness and education

Colorectal cancer in young people

“We need to educate the public and the medical community that symptoms like blood in the stool, persistent constipation, thin stools, and unexplained weight loss should be investigated with a colonoscopy, even in young people,” Dr. Kamath explained. Current guidelines recommend starting colonoscopies at age 45, but open conversations about colorectal health could help identify those who may need earlier screenings.

Many individuals do not share their colorectal health issues with family members, potentially missing out on early detection opportunities. “There are likely more people at high risk for colorectal cancer who need screening than we realize,” Dr. Kamath noted.

Tailoring Prevention and Treatment

Dr. Saeed emphasized that rising colorectal cancer rates among young people indicate the disease is not limited to older adults. “Prevention, treatment, and survivorship strategies may need to be tailored for younger populations,” she said. However, experts are still determining the best approaches to address this trend effectively.

In conclusion, while the rising rates of colorectal cancer among young people are alarming, increased awareness, education, and targeted research can help mitigate this trend. By understanding and addressing the underlying causes, we can develop better prevention and treatment strategies for all age groups.


Recent studies suggest that increased consumption of processed foods, environmental pollutants, and changes in gut microbiota might be contributing to the rising rates of colorectal cancer among younger individuals. Ongoing research aims to identify specific factors and mechanisms involved, which could lead to more effective prevention and early detection methods.

By fostering a proactive approach to colorectal health and encouraging open discussions about risk factors and symptoms, we can work towards reducing the incidence of this disease in younger populations.


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