In March 2019 researchers from China published their review of the medical scientific literature to assess the association between coffee and tea consumption and brain cancer risk. A total of 11 studies were included in the review. Results showed that coffee consumption was significantly associated with a reduced risk of brain cancer, especially in Asian populations. However, no association between the risk of brain cancer and tea consumption was seen except in the American populations.
Song Y et al. Association between tea and coffee consumption and brain cancer risk: an updated meta-analysis. World J Surg Oncol. 2019 Mar 15;17(1):51