Periodontal Disease and Cancer Risk in Women

Older Women with Gum Disease May Face Increased Cancer Risk, Study Finds

New research indicates that postmenopausal women with a history of gum disease may be at a significantly higher risk of developing cancer. Involving more than 65,000 women, this large-scale study is the first of its kind to focus exclusively on older women when exploring the connection between periodontal disease and cancer.

Published in Cancer Epidemiology, Biomarkers & Prevention in August 2017, the study was led by experts from the University at Buffalo and offers new insights into how oral health could influence cancer risk in aging women.

Groundbreaking Research on Periodontal Disease and Cancer in Women

“This is the first nationwide investigation specifically analyzing cancer risk linked to gum disease in women over 50,” said Dr. Jean Wactawski-Wende, senior researcher and dean of the UB School of Public Health and Health Professions. The findings emerged from data gathered through the Women’s Health Initiative, a long-term observational study tracking health factors affecting older American women.

The study included 65,869 participants, with an average age of 68. Most of the women were non-Hispanic white and responded to the question, “Has a dentist or hygienist ever diagnosed you with gum or periodontal disease?” Based on their responses, researchers found that those who answered yes had a 14% higher risk of developing cancer overall.

Breast, Esophageal, and Gallbladder Cancers Among Top Concerns

Out of over 7,000 cancer cases documented during the study, breast cancer made up the largest portion, with 2,416 diagnoses. However, one of the most significant findings was that the risk of esophageal cancer was highest among women with a history of periodontal disease.

Dr. Wactawski-Wende explained that this may be because oral bacteria can more easily access the esophagus, potentially triggering inflammation and carcinogenic changes in nearby tissues.

In addition to esophageal cancer, the study also revealed a notable association with gallbladder cancer, which had not previously been linked to gum disease in earlier studies. “Chronic inflammation is thought to play a role in gallbladder cancer,” said Dr. Ngozi Nwizu, lead author of the study and assistant professor at the University of Texas Health Science Center. “This is the first time such a connection has been identified between gum disease and gallbladder cancer in a population-based study.”

Inflammation May Be the Link

Researchers believe that inflammation triggered by certain periodontal pathogens may be the common factor linking gum disease to cancer. These bacteria can spark inflammatory reactions in small amounts and have been found in other parts of the body—including in various cancerous tissues.

“Some bacteria that live in the mouth are capable of producing inflammation even at low levels, and they’ve been identified in several different organ systems,” Dr. Nwizu noted. “Understanding their role in cancers like esophageal cancer is crucial if we want to design better preventive strategies.”

Higher Risk in Smokers and Former Smokers

The study also found that the link between gum disease and cancer was stronger in women who currently smoke or had smoked in the past. Smoking is already a known risk factor for both periodontal disease and many cancers, and this overlap may amplify the danger in certain groups.

Why This Matters for an Aging Population

As life expectancy rises in the U.S., the elderly population is growing—and with it, the prevalence of periodontal disease and age-related cancers. “Older adults are more likely to suffer from gum issues,” Dr. Nwizu explained. “Since cancer typically develops over a long period of time, postmenopausal women may be especially vulnerable to these combined risks.”

Final Thoughts

This research adds to a growing body of evidence that suggests oral health is deeply connected to systemic health. While more studies are needed to clarify the exact mechanisms behind these links, it’s clear that periodontal disease may be more than just a dental concern—it could be a contributing factor to serious conditions like cancer.

Maintaining good oral hygiene and seeking early treatment for gum disease may not only protect your teeth but could also play a role in lowering long-term health risks, especially for older women.