Scientists find a big cause of colorectal cancer in people under 50

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In recent years, doctors and researchers have noticed a worrying trend: more and more young people, those under 50, are being diagnosed with colorectal cancer (CRC).

This increase has sparked a lot of research to understand why this is happening. A new study has taken a significant step in unraveling this mystery by looking at the role of bacteria in these cancers.

Published in the journal eBioMedicine, the study has found differences in the bacteria found in tumors from younger people with colorectal cancer compared to those found in older patients.

This discovery is crucial because it might lead to new ways to screen for or treat this type of cancer in younger individuals.

The American Cancer Society has reported that both the number of new cases and deaths from young-onset colorectal cancer are rising annually.

Projections are even more alarming, with predictions that by 2030, the number of colon and rectal cancer cases in young people could double and quadruple, respectively.

Dr. Alok Khorana, an oncologist from the Cleveland Clinic and the study’s lead researcher, expressed concern over this trend.

The study his team conducted used advanced gene sequencing technologies to analyze tissue samples from young-onset CRC patients compared to those from older patients.

They found not only a greater abundance of bacteria in the tumors from younger patients but also a different composition of these bacteria, with certain types like Akkermansia and Bacteroides being more common.

This finding is significant for several reasons. For one, it gives scientists and doctors new clues about what might be causing the increase in colorectal cancer among younger people. Understanding the bacterial differences in young-onset CRC could lead to new screening methods that can detect the disease earlier in younger people. It might also open the door to new treatments that target these specific bacteria.

The study’s first authors, Dr. Shimoli Barot and Dr. Naseer Sangwan, highlighted the potential for these bacterial markers to lead to new diagnostic tools and treatments.

However, they also pointed out the need for more research into how lifestyle factors—like diet, medication use, and obesity—might affect gut bacteria and contribute to the rise in CRC among young people.

This research is a step forward in understanding the complex factors that contribute to young-onset colorectal cancer.

If you care about cancer risk, please read studies that exercise may stop cancer in its tracks, and vitamin D can cut cancer death risk.

For more information about cancer, please see recent studies that yogurt and high-fiber diet may cut lung cancer risk, and results showing that new cancer treatment may reawaken the immune system.

The research findings can be found in eBioMedicine.

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