OBJECTIVE: To evaluate the association between tea consumption and the risk of renal cell carcinoma. METHODS: We searched PubMed,Web of Science and Scopus between 1970 and November 2012. Two evaluators independently reviewed and selected articles based on predetermined selection criteria. RESULTS: Twelve epidemiological studies (ten case-control studies and two cohort studies) were included in the final analysis. In a meta-analysis of all included studies, when compared with the lowest level of tea consumption, the overall relative risk (RR) of renal cell carcinoma for the highest level of tea consumption was 1.03 (95% confidence interval [CI] 0.89-1.21). In subgroup meta-analyses by study design, there was no significant association between tea consumption and renal cell carcinoma risk in ten case-control studies using adjusted data (RR=1.08, 95% CI 0.84-1.40). Furthermore, there was no significant association in two cohort studies using adjusted data (RR=0.95, 95% CI 0.81-1.12). CONCLUSION: Our findings do not support the conclusion that tea consumption is related to decreased risk of renal cell carcinoma. Further prospective cohort studies are required.
OBJECTIVE: To evaluate the association between tea consumption and the risk of renal cell carcinoma. METHODS: We searched PubMed,Web of Science and Scopus between 1970 and November 2012. Two evaluators independently reviewed and selected articles based on predetermined selection criteria. RESULTS: Twelve epidemiological studies (ten case-control studies and two cohort studies) were included in the final analysis. In a meta-analysis of all included studies, when compared with the lowest level of tea consumption, the overall relative risk (RR) of renal cell carcinoma for the highest level of tea consumption was 1.03 (95% confidence interval [CI] 0.89-1.21). In subgroup meta-analyses by study design, there was no significant association between tea consumption and renal cell carcinoma risk in ten case-control studies using adjusted data (RR=1.08, 95% CI 0.84-1.40). Furthermore, there was no significant association in two cohort studies using adjusted data (RR=0.95, 95% CI 0.81-1.12). CONCLUSION: Our findings do not support the conclusion that tea consumption is related to decreased risk of renal cell carcinoma. Further prospective cohort studies are required.
Authors: Edwige Landais; Aurélie Moskal; Amy Mullee; Geneviève Nicolas; Marc J Gunter; Inge Huybrechts; Kim Overvad; Nina Roswall; Aurélie Affret; Guy Fagherazzi; Yahya Mahamat-Saleh; Verena Katzke; Tilman Kühn; Carlo La Vecchia; Antonia Trichopoulou; Elissavet Valanou; Calogero Saieva; Maria Santucci de Magistris; Sabina Sieri; Tonje Braaten; Guri Skeie; Elisabete Weiderpass; Eva Ardanaz; Maria-Dolores Chirlaque; Jose Ramon Garcia; Paula Jakszyn; Miguel Rodríguez-Barranco; Louise Brunkwall; Ena Huseinovic; Lena Nilsson; Peter Wallström; Bas Bueno-de-Mesquita; Petra H Peeters; Dagfinn Aune; Tim Key; Marleen Lentjes; Elio Riboli; Nadia Slimani; Heinz Freisling Journal: Nutrients Date: 2018-06-05 Impact factor: 5.717