American doctor warns of 5 habits that ‘feed’ colon cancer

Colorectal cancer is no longer a “disease of the elderly”. The trend of rejuvenating this disease is increasing globally, and one of the main causes comes from daily living habits that we rarely expect.

The American Cancer Society confirms that the number of early-onset cases is increasing in more than half of the world’s countries. Studies consistently show that diet and lifestyle play a key role.

Recently, Dr. Karen Zaghiyan – colorectal surgeon in Los Angeles (USA) – pointed out 5 things she absolutely avoids to protect her digestive system.

Prepared meat

At the top of the “black” list are meats such as bacon, pepperoni and cold cuts. Countless studies have demonstrated an association between this food group and colorectal cancer risk, with an estimated increase of 13-22%.

According to the American Institute for Cancer Research, consuming just 50 grams of processed meat per day (equivalent to about 2 slices of bacon) increases the risk of disease by 16%.

Grilled meat over direct heat

Meat cooked directly over an open flame, especially when charred or blackened, is another hazard. High-temperature baking produces chemical compounds called HCAs and PAHs.

Laboratory studies show that these substances have the potential to cause tumors, including in the colon. Burnt meat is the clearest sign of the presence of these cancer-causing compounds.

Overuse of antibiotics for minor illnesses

Dr. Zaghiyan warns about taking antibiotics too often for minor infections or the common cold.

Research suggests that continuous use of antibiotics for two or more months in adulthood may significantly increase the likelihood of developing precancerous tumors later in life. The cause is believed to be due to prolonged disruption of the intestinal microbiota.

Ultra-processed foods

This group includes packaged snacks, industrial baked goods, sugary drinks and ready-to-eat meals. Their characteristics are that their structure is greatly altered and they are very poor in fiber.

A large 2025 study found that women under 50 who consumed the most ultra-processed foods were up to 45% more likely to develop precancerous adenomas.

Mouthwash contains alcohol

Few people would expect that mouthwash is related to the colon. However, a recent study found that using an alcohol-based mouthwash daily for three months significantly altered the oral microbiome, increasing bacteria linked to gum disease and colorectal cancer. For this reason, Dr. Zaghiyan has included alcohol-containing mouthwash on the list of products she personally absolutely avoids.

Colon cancer often progresses silently, but the body always has warning signals that you must not ignore:

• Change prolonged bowel habits.

• There is blood in the stool.

• Discomfort, persistent dull abdominal pain.

• Unexplained weight loss.

• Prolonged fatigue or the feeling of incomplete bowel movements.

Recognizing symptoms early and making lifestyle changes today can significantly improve treatment outcomes and protect your future health.