We read with interest the recent finding by Park et al1 that dietary fiber was associated with a 69% and 54% lower risk of death from respiratory diseases among men and women, respectively, using data from the National Institutes of Health (NIH)-AARP prospective cohort. As indicated by the authors, anti-inflammatory properties of dietary fiber may contribute to the observed associations. Summarized herein are previously reported findings from 2 prospective cohorts, the Singapore Chinese Health Study (SCHS)2 and the US Atherosclerosis Risk in Communities (AIRC) study,3 that support a beneficial effect of higher fiber intake in the development of respiratory morbidity.
Butler LM, Kan H, London SJ. Dietary Fiber Prevents Both Morbidity and Mortality From Respiratory Disease. Arch Intern Med. 2011;171(12):1123. doi:10.1001/archinternmed.2011.240