However, a recent systematic literature review has suggested that coffee and tea consumption are probably not associated with bladder cancer.30 Coffee drinking has been studied extensively as a potential risk factor, but the inconsistency of the observed associations suggests that the relationship is either quite weak, noncausal, or dependent in a complex way on unmeasured factors.31 The attributable risk estimates indicated 33% of bladder cancers among men could have been prevented by elimination of coffee consumption.
Comme d’autres études17–19, la présente étude a mis en évidence une relation dose-effet entre le nombre d’années d’exposition à des colorants et le risque de cancer de la vessie chez les hommes. Il est bien établi que la benzidine fait courir un tel risque20,21, et notre étude en a apporté une autre confirmation.