PMID- 29191432 OWN - NLM STAT- MEDLINE DCOM- 20190620 LR - 20190620 IS - 1873-460X (Electronic) IS - 1056-8727 (Linking) VI - 32 IP - 2 DP - 2018 Feb TI - Cereal fiber, fruit fiber, and type 2 diabetes: Explaining the paradox. PG - 240-245 LID - S1056-8727(17)30812-7 [pii] LID - 10.1016/j.jdiacomp.2017.11.002 [doi] AB - While the relationship between dietary fiber and type 2 diabetes mellitus (T2DM) has been much studied, the evidence about its role in the prevention and control of this condition has been conflicting. We critically evaluate prospective cohort studies and randomized controlled trials (RCTs) that examined insoluble/nonviscous/cereal fiber and soluble/viscous/fruit fiber in relation to risk of T2DM. Taken as a whole this evidence indicates that, in the quantities typically eaten, cereal fiber is protective against T2DM while fruit fiber gives little protection. We argue that the protective action of cereal fiber may be explained by the modulating effects of gut microbiota through mechanisms such as: 1) improving glucose tolerance via energy metabolism pathways (colonic fermentation and generation of short-chain fatty acids); 2) reducing inflammation; and 3) altering the immune response. By gaining more knowledge of specific host and gut microbial functional pathways involved in T2DM development and the potential role of cereal fiber, appropriate disease prevention and intervention strategies may be developed. CI - Copyright (c) 2017 Elsevier Inc. All rights reserved. FAU - Davison, Karen M AU - Davison KM AD - Health Science Program, Department of Biology, Kwantlen Polytechnic University, Surrey, British Columbia, Canada. Electronic address: karend@athabascau.ca. FAU - Temple, Norman J AU - Temple NJ AD - Centre for Science, Athabasca University, Athabasca, Alberta T9S 3A3, Canada. Electronic address: normant@athabascau.ca. LA - eng PT - Journal Article PT - Review DEP - 20171110 PL - United States TA - J Diabetes Complications JT - Journal of diabetes and its complications JID - 9204583 RN - 0 (Dietary Fiber) SB - IM MH - Cohort Studies MH - Diabetes Mellitus, Type 2/complications/diet therapy/*epidemiology/microbiology MH - *Dietary Fiber/administration & dosage/adverse effects MH - *Edible Grain/adverse effects/physiology MH - Feeding Behavior/*physiology MH - *Fruit/adverse effects/chemistry MH - Gastrointestinal Microbiome/physiology MH - Humans MH - Risk Factors OTO - NOTNLM OT - Cereal fiber OT - Diabetes OT - Dietary fiber OT - Microbiome OT - Type 2 diabetes EDAT- 2017/12/02 06:00 MHDA- 2019/06/21 06:00 CRDT- 2017/12/02 06:00 PHST- 2017/06/10 00:00 [received] PHST- 2017/10/10 00:00 [revised] PHST- 2017/11/03 00:00 [accepted] PHST- 2017/12/02 06:00 [pubmed] PHST- 2019/06/21 06:00 [medline] PHST- 2017/12/02 06:00 [entrez] AID - S1056-8727(17)30812-7 [pii] AID - 10.1016/j.jdiacomp.2017.11.002 [doi] PST - ppublish SO - J Diabetes Complications. 2018 Feb;32(2):240-245. doi: 10.1016/j.jdiacomp.2017.11.002. Epub 2017 Nov 10.