Tea consumption and gastric cancer: a pooled analysis from the Stomach cancer Pooling (StoP) Project consortium.
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Martimianaki Georgia, Alicandro Gianfranco, Pelucchi Claudio, Bonzi Rossella, Rota Matteo, Hu Jinfu, Johnson Kenneth C, Rabkin Charles S, Liao Linda M, Sinha Rashmi, Zhang Zuo-Feng, Dalmartello Michela, Lunet Nuno, Morais Samantha, Palli Domenico, Ferraroni Monica, Yu Guo-Pei, Tsugane Shoichiro, Hidaka Akihisa, Curado Maria Paula, Dias-Neto Emmanuel, Zaridze David, Maximovitch Dmitry, Vioque Jesus, Garcia de la Hera Manoli, López-Carrillo Lizbeth, Hernández-Ramírez Raúl Ulises, Hamada Gerson Shigueaki, Ward Mary H, Mu Lina, Malekzadeh Reza, Pourfarzi Farhad, Trichopoulou Antonia, Karakatsani Anna, Kurtz Robert C, Lagiou Areti, Lagiou Pagona, Boccia Stefania, Boffetta Paolo, Camargo M Constanza, Negri Eva, La Vecchia Carlo
Аннотация
METHODS: A total of 9438 cases and 20,451 controls from 22 studies worldwide were included. Odds ratios (ORs) and the corresponding 95% confidence intervals (CIs) of gastric cancer for regular versus non-regular tea drinkers were estimated by one and two-stage modelling analyses, including terms for sex, age and the main recognised risk factors for gastric cancer.
RESULTS: Compared to non-regular drinkers, the estimated adjusted pooled OR for regular tea drinkers was 0.91 (95% CI: 0.85-0.97). When the amount of tea consumed was considered, the OR for consumption of 1-2 cups/day was 1.01 (95% CI: 0.94-1.09) and for >3 cups/day was 0.91 (95% CI: 0.80-1.03). Stronger inverse associations emerged among regular drinkers in China and Japan (OR: 0.67, 95% CI: 0.49-0.91) where green tea is consumed, in subjects with H. pylori infection (OR: 0.68, 95% CI: 0.58-0.80), and for gastric cardia cancer (OR: 0.64, 95% CI: 0.49-0.84).
CONCLUSION: Our results indicate a weak inverse association between tea consumption and gastric cancer.