Document Type: Research Articles
Kyoto University Health Service, Kyoto, Japan.
Department of Social and Preventive Medicine, Faculty of Medicine, University of Malaya, Malaysia.
Department of Population Medicine and Civilization Disease Prevention, Medical University of Bialystok, Poland.
Hokkaido Chitose College of Rehabilitation, Chitose, Japan.
Julius Centre University of Malaya, Faculty of Medicine, University of Malaya, Malaysia.
Department of Surgery, Faculty of Medicine, University of Malaya, Malaysia.
University Malaya Cancer Research Institute, Malaysia.
Department of Public Health, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
Research Unit of Advanced Interdisciplinary Care Science, Graduate School of Human Life Science, Osaka City University, Osaka, Japan.
This study investigated the association between intake of common alcoholic and non-alcoholic beverages and breast cancer risk among Japanese women. This study included 33,396 Japanese women aged 40–79 years from 24 areas in Japan from the Collaborative Cohort study. During the follow-up period (≥20 years), 245 incidents or mortal breast cancers were documented. Multivariable logistic regression analysis was performed to assess the independent association between breast cancer risk and the intake of Japanese green tea, coffee, and alcohol. Japanese green tea was the most commonly consumed non-alcoholic beverage (81.6% of participants), followed by coffee (34.7%) and alcohol (23.6%). No significant associations were identified between the intake of green tea and coffee with breast cancer risk (odds ratio OR 1.15, 95% confidence interval [CI] 0.82–1.60, and OR 0.84, 95% CI 0.64–1.10, respectively). Alcohol intake was associated with significant breast cancer risk (OR 1.46, 95% CI 1.11–1.92), and even infrequent alcohol consumption (