FIBRE AND MORTALITY
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In one meta-analysis based on seven prospective cohort studies, there was an 11% reduction (95% CI 0.85–0.92) in all-cause mortality for each 10-g per day increment in the consumption of dietary fibre. Regarding the type of dietary fibre, it appeared that cereal fibre consumption associated with the strongest inverse association with mortality. It should be noted, however, that mortality as an outcome is not ideal as a marker of disease prevention. Furthermore, the data presented here are based on association and do not provide evidence that increased dietary fibre necessarily causes an improved mortality rate. It remains possible that factors related to increased fibre intake, including healthy lifestyle factors (such as a healthy diet generally, physical activity and sleep sufficiency), may mediate at least some of the association between increased dietary fibre intake and improved longevity. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7589116/#sec5-nutrients-12-03209title (5.9 MORTALITY)