Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2026
Oral Health and Risk of Liver Cancer: Evidence from Pooled and Meta-Analyses.
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Wu Zeni, Jordão Haydée W T, Jones Gieira S, McKenna Gerry, Almeida Andrea A, Chong Dawn Q, Coleman Helen G, Eliassen A Heather, Giovannucci Edward L, Graubard Barry I, McMenamin Úna C, Mucci Lorelei A, Stampfer Meir J, Tinker Lesley, Wactawski-Wende Jean, Zhang Xinyuan, Zhang Xuehong, Campbell Peter T, Kunzmann Andrew T, McGlynn Katherine A, Petrick Jessica L
Аннотация
BACKGROUND: Poor oral health, including periodontal disease and tooth loss, is linked to systemic inflammation and oral microbial dysbiosis, which may promote liver carcinogenesis through the oral-gut-liver axis. However, epidemiologic evidence on oral health and liver cancer risk remains inconsistent. We examined these associations in three prospective US cohorts and conducted a systematic review and meta-analysis of prospective studies.
METHODS: We pooled data from the Health Professionals Follow-Up Study, Nurses' Health Study, and Women's Health Initiative (230,915 participants, 198 liver cancer cases). Oral health, including periodontal disease and tooth loss, was self-reported. Multivariable-adjusted Cox models estimated hazard ratios (HR) and 95% confidence intervals (CI). A systematic review through September 2025 identified four additional prospective studies, which were combined with pooled results in meta-analyses.
RESULTS: In the pooled analyses, periodontal disease (HR = 0.99; 95% CI, 0.67-1.47) and complete tooth loss (HR = 1.29; 95% CI, 0.71-2.35) were not associated with liver cancer risk. In the meta-analysis, dominated by one large study, periodontal disease was associated with an increased liver cancer risk (HR = 1.08; 95% CI, 1.03-1.13; n = 4 studies; I2 = 0%). In a linear dose-response meta-analysis, complete tooth loss was associated with an increased risk (HR = 1.32; 95% CI, 1.06-1.66; n = 6; I2 = 0%).
CONCLUSIONS: The findings of the current investigation suggest that although an association between oral health and liver cancer is possible, the results remain inconclusive.
IMPACT: These findings underscore the need for more studies using harmonized oral health assessments integrating clinical, microbial, and behavioral data to better capture the oral health burden.
METHODS: We pooled data from the Health Professionals Follow-Up Study, Nurses' Health Study, and Women's Health Initiative (230,915 participants, 198 liver cancer cases). Oral health, including periodontal disease and tooth loss, was self-reported. Multivariable-adjusted Cox models estimated hazard ratios (HR) and 95% confidence intervals (CI). A systematic review through September 2025 identified four additional prospective studies, which were combined with pooled results in meta-analyses.
RESULTS: In the pooled analyses, periodontal disease (HR = 0.99; 95% CI, 0.67-1.47) and complete tooth loss (HR = 1.29; 95% CI, 0.71-2.35) were not associated with liver cancer risk. In the meta-analysis, dominated by one large study, periodontal disease was associated with an increased liver cancer risk (HR = 1.08; 95% CI, 1.03-1.13; n = 4 studies; I2 = 0%). In a linear dose-response meta-analysis, complete tooth loss was associated with an increased risk (HR = 1.32; 95% CI, 1.06-1.66; n = 6; I2 = 0%).
CONCLUSIONS: The findings of the current investigation suggest that although an association between oral health and liver cancer is possible, the results remain inconclusive.
IMPACT: These findings underscore the need for more studies using harmonized oral health assessments integrating clinical, microbial, and behavioral data to better capture the oral health burden.