Colon cancer is no longer 'old people's disease. Doctor on X names one popular food as 'biggest risk factor' : 'It is a carcinogen like tobacco'

Colon cancer is no longer an old person’s disease. Once, the vast majority of colon cancer patients were aging people above the age of 55, but the incidence of this cancer in younger men and women have become frighteningly common in recent times. An article published in Science News, cited a research conducted in Switzerland which found more people under 50 are being diagnosed with colorectal cancer, including people in their thirties.

Cancers diagnosed before the age of 50 made up 6.1% of all colorectal cancer cases in the study. The researchers observed a steady increase in the disease among younger adults, with incidence rates climbing by around 0.5% each year and eventually reaching nearly 7 cases per 100,000 person-years. They also found that younger patients were more likely to receive their diagnosis at an advanced stage. Approximately 28% of people under 50 already had metastatic colorectal cancer, meaning the disease had spread to other parts of the body, at the time of diagnosis. In comparison, about 20% of patients aged 50 and older were diagnosed after the cancer had already metastasized, highlighting a greater likelihood of late-stage detection among younger adults.

Doc On X Names The Main Culprit Behind Rise Of Colon Cancer

Internal medicine specialist Dr. Priyam Bordoloi recently used X to highlight a dietary habit that research has consistently linked to a significantly greater likelihood of developing colorectal cancer. According to the physician, processed meats remain one of the strongest food-related risk factors associated with the disease, particularly at a time when cases among younger adults are increasing across many parts of the world.


Dr. Bordoloi explained that scientists have investigated several dietary components as possible contributors to the growing number of colon cancer diagnoses. Among commonly debated ingredients such as artificial sweeteners, seed oils, and high-fructose corn syrup, the most convincing scientific evidence continues to point toward processed meats, including bacon, sausages, hot dogs, ham, and salami.

He noted that the World Health Organization classifies processed meat as a Group 1 carcinogen. This category indicates that there is sufficient scientific evidence linking regular consumption of these foods to cancer in humans. Although this classification is based on the strength of the evidence rather than the level of danger, it underscores the importance of limiting frequent intake.

Dr. Bordoloi also described the biological processes that explain why processed meat may raise cancer risk. Many processed meat products contain nitrates and nitrites as preservatives. Inside the acidic environment of the digestive tract, these compounds can be transformed into nitrosamines, chemicals capable of damaging the DNA of cells lining the colon. Over time, repeated DNA injury may contribute to the development of cancer.

Another factor is heme iron, a naturally occurring component of red meat. Heme iron can accelerate the formation of harmful compounds in the intestine, increasing oxidative stress and tissue damage. In addition, methods such as smoking, grilling, or cooking meat at very high temperatures can produce carcinogenic substances known as heterocyclic amines (HCAs) and polycyclic aromatic hydrocarbons (PAHs), which may further injure cells and promote tumor formation.

The doctor emphasized that the risk depends largely on how much processed meat a person consumes. Research suggests that eating around 50 grams every day can increase colorectal cancer risk by approximately 18 percent. An occasional serving is unlikely to have a major impact, but making processed meat a daily habit may substantially raise long-term risk. Choosing fiber-rich foods such as fruits, vegetables, whole grains, and legumes instead can support better digestive health.

What Are Some Symptoms Of Colon Cancer?

Ongoing abdominal discomfort, blood in the stool, unexplained weight loss, and persistent changes in bowel habits should never be dismissed. These symptoms deserve prompt medical evaluation, especially among younger adults, who may mistakenly believe they are not at risk for the disease.