Tea Consumption and Risk of Cancer: An Umbrella Review and Meta-Analysis of Observational Studies.

ABSTRACT: Tea is one of the most widely consumed beverages, but its association with cancer risk remains controversial and unclear. We performed an umbrella review to clarify and determine the associations between tea consumption and various types of cancer by summarizing and recalculating the existing meta-analyses. Meta-analyses of observational studies reporting associations between tea consumption and cancer risk were searched on PubMed and Embase. Associations found to be statistically significant were further classified into levels of evidence (convincing, suggestive, or weak), based on P value, between-study heterogeneity, prediction intervals, and small study effects. Sixty-four observational studies (case-control or cohort) corresponding to 154 effect sizes on the incidence of 25 types of c

SUBMITTER: Kim TL 

PROVIDER: S-EPMC7666907 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature