School of Public Health, Curtin Health Innovation Research Institute, Curtin University of Technology, Perth, Western Australia. Andy.Lee@curtin.edu.au
ABSTRACT
Green tea is a popular beverage and its health benefits are well known. However, inconsistent results have been reported in observational studies concerning the association between green tea consumption and the lung cancer risk. In this commentary, several methodological issues underlying the measurement of tea exposure are highlighted. The recommendations should be useful for designing and planning prospective cohort studies to ascertain the protective effect of green tea against lung cancer.