Alzheimer's & dementia (Amsterdam, Netherlands) · 2026
Association between Alzheimer's/Parkinson's diseases and cancers: Modifying effects of alcohol consumption and viral infections revealed by an ecological study.
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Ye Wenyu, Zhang Ziqi, Ye Sha, Li Shifang, Zheng Wanyi, Oparinde Jolaoluwa Grace, Ji Guang, Linnebacher Michael, Lu Lili
Аннотация
INTRODUCTION: An inverse epidemiological association exists between Alzheimer's and Parkinson's diseases (AD/PD) and certain cancers. Using a sex-stratified approach, this global study clarifies shared and distinct mechanisms underlying the complex AD/PD-cancer relationship.
METHODS: Data from two World Health Organization (WHO) databases were analyzed for correlations between AD/PD and 23 major cancers, stratified by sex, region, and etiology.
RESULTS: An inverse association was observed between AD/PD and most, especially gastrointestinal (GI), cancers. Conversely, virus-related cancers including human papilloma virus (HPV)-driven cervical and hepatitis B virus (HBV)/hepatitis C virus (HCV)-related liver cancer (LC) were positively associated solely with PD, but not with AD. Sex-specific analyses revealed distinct patterns: oesophagus cancer (OC) was positively correlated with AD/PD only in women. LC etiology showed opposing links to PD: HBV/HCV-related positive and alcohol-related inverse. Further analysis indicated alcohol exhibited contrasting roles: positive with GI cancers but inverse with AD/PD.
DISCUSSION: We provide novel epidemiological evidence on the complex interplay between neurodegeneration and cancers, suggesting shared biological pathways and modulators.
METHODS: Data from two World Health Organization (WHO) databases were analyzed for correlations between AD/PD and 23 major cancers, stratified by sex, region, and etiology.
RESULTS: An inverse association was observed between AD/PD and most, especially gastrointestinal (GI), cancers. Conversely, virus-related cancers including human papilloma virus (HPV)-driven cervical and hepatitis B virus (HBV)/hepatitis C virus (HCV)-related liver cancer (LC) were positively associated solely with PD, but not with AD. Sex-specific analyses revealed distinct patterns: oesophagus cancer (OC) was positively correlated with AD/PD only in women. LC etiology showed opposing links to PD: HBV/HCV-related positive and alcohol-related inverse. Further analysis indicated alcohol exhibited contrasting roles: positive with GI cancers but inverse with AD/PD.
DISCUSSION: We provide novel epidemiological evidence on the complex interplay between neurodegeneration and cancers, suggesting shared biological pathways and modulators.