Is There a Link Between Oral Health and Colorectal Cancer?

oral health and colorectal cancer

The Link Between Oral Health and Colorectal Cancer: Why Your Gums Matter

As colorectal cancer (CRC) rates climb, especially among younger adults, it’s time to examine factors that could be influencing this rise. While CRC screenings typically begin at age 50, emerging evidence suggests that oral health may play a surprising role in cancer risk, potentially shifting the timeline for screenings.

A recent study carried out in Montreal found a link between poor oral health—specifically periodontal disease (gum disease)—and an increased risk of CRC. This identifies a link between oral health and colorectal cancer. The bacteria Fusobacterium nucleatum (Fn), commonly found in gum disease, has been shown to be more prevalent in colorectal tumors. If you’re experiencing symptoms of gum disease, such as bleeding gums or persistent bad breath, this study might be a wake-up call to not only visit your dentist but also to advocate for an earlier CRC screening.

The Study Findings

Here is the abstract from the study:

Colorectal cancer remains the top leading cancer worldwide. Accumulating evidence suggests periodontal pathogens are involved in colorectal carcinogenesis, indicating the need for high-quality epidemiological evidence linking periodontal disease (PD) and colorectal cancer (CRC). Thus, we conducted the first population-based case–control study that was specifically designed to investigate the association between compromised oral health and sporadic CRC. A total of 348 incident cases of colon or rectal cancer, and 310 age and sex frequency-matched controls, from the Montreal island and Laval population participated in the study. Data were collected on PD and on several CRC risk factors using validated questionnaires. A life-course approach was used to document long-term history regarding lifestyle factors. Multivariable unconditional logistic regression analysis was used to estimate the rate ratio (RR) quantifying the association between CRC and PD. Results showed that the rate of new diagnosis of CRC in persons with a positive history of PD was 1.45 times higher than in those with a negative history of PD adjusting for age, sex, BMI, education, income, diabetes, family history of CRC, regular use of non-steroidal anti-inflammatory drugs, lifetime cumulative smoking, lifetime consumption of red meats, processed meats, and alcoholic drinks, and lifetime total physical activity score (adjusted RR = 1.45; 95% CI 1.04–2.01; p = 0.026). Our results support the hypothesis of an association between PD and sporadic CRC risk. (LINK TO THE full study)


What This Means for Your Health

For those under 50, it’s becoming increasingly important to not ignore oral health issues like bleeding gums. In fact, dentists play a crucial role in potentially catching early warning signs of other health problems, like colorectal cancer. At Dr. E’s office, we’re committed to not only taking care of your teeth and gums but ensuring your overall well-being.

If you’re concerned about CRC risk and have a history of gum disease, talk to your doctor about scheduling a colonoscopy earlier than the standard recommendation. Ignoring the signs—whether in your mouth or your body—could have serious consequences.

Oral Health and Diet: Another Link

The trend of rising CRC rates among younger adults has also been linked to diet, particularly the consumption of ultra-processed foods. These types of foods not only harm the gut but also negatively impact your oral microbiome, the balance of good and bad bacteria in your mouth.

Nourishing your oral microbiome with a healthy diet can be a simple, powerful step in reducing your cancer risk. Adding more fruits, vegetables, and whole foods into your diet—and limiting ultra-processed foods—helps maintain a healthy oral and gut microbiome, both of which are essential for overall health. Here’s a great start: oral microbiome omelet recipe, provided by functional dentist, Dr. Mark Burhenne.

What to Do Now: Schedule a Check-Up

The bottom line? Oral health is about much more than just a great smile. If you’ve noticed any signs of gum disease, now is the time to act. Regular dental check-ups are key to staying on top of your health. Dr. E and her team are gentle, caring, and always focused on making you feel comfortable while delivering the best care. As Ahwatukee’s Best Dentist every year since 2016, Dr. E is here to help you maintain your oral health and keep an eye on any potential problems.

Don’t wait! Make sure to use your bi-annual dental insurance benefits before the end of the year by booking your appointment today: 480-494-2435.

Your smile and your health are worth it!

Contact us for comments or questions: https://drefamilydental.com/contacts/