Scientists from the University of Cincinnati found that colon cancer patients’ diets and the bacteria in their gut are contributing factors.
The research was presented at the American Society of Clinical Oncology annual meeting and was conducted by Jordan Kharofa et al.
While recommended screenings beginning at age 45 have helped decrease colorectal cancer cases in older adults, cancer rates are continuing to increase in younger populations.
In the study, the team examined the link between bacteria in the fecal microorganisms, or microbiome, and rates of colorectal cancer in younger populations.
Previous studies have shown that certain bacteria species present in the gut are associated with colorectal cancer.
The research team then asked the question if these cancer-causing bacteria were elevated specifically in younger colorectal cancer patients compared to older patients and to healthy patients.
They analyzed microbiome data from 609 patients who were healthy and 692 patients with colorectal cancer.
The research found two species of bacteria most closely linked to causing colorectal cancer were not found in higher levels among young patients, meaning these bacteria are unlikely to be responsible for increased cancer rates in young people.
Five other bacteria were found in higher levels in young people, including one species that is associated with a sulfur microbial diet, or a diet that is both high in processed meats, low-calorie drinks, and liquor and low in raw fruits, vegetables, and legumes.
Other studies have revealed connections between a sulfur microbial diet and a higher increased risk of cancer in younger people, and this study is consistent with these previous findings.
While more research is needed, the team says a tangible takeaway from the study is for young people to eat more raw fruits and vegetables and legumes and less processed meats in their diets.
Even if a person is younger, anyone with symptoms should be evaluated by a doctor.
Signs and symptoms of colorectal cancer include rectal bleeding or blood in the stool; persistent abdominal discomfort, including gas, bloating, fullness or cramps; diarrhea, constipation or feeling that the bowel does not fully empty; unknown weight loss; fatigue and vomiting.
If you care about colon health, please read studies about what should you know about colonoscopy, and diet soda drinkers have lower colon cancer death risk.
For more information about colon cancer, please see recent studies about things that may increase and decrease your colon cancer risk, and results showing this HIV drug can stop colon cancer growth.
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