Dietary Fiber and Satiety: The Effects of Oats on Satiety

Nutr Rev. 2016 Feb;74(2):131-47. doi: 10.1093/nutrit/nuv063. Epub 2016 Jan 2.

Abstract

This review examines the effect of β-glucan, the viscous soluble fiber in oats, on satiety. A literature search for studies that examined delivery of the fiber in whole foods or as an extract was conducted. Viscosity interferes with the peristaltic mixing process in the small intestine to impede digestion and absorption of nutrients, which precipitates satiety signals. From measurements of the physicochemical and rheological properties of β-glucan, it appears that viscosity plays a key role in modulating satiety. However, the lack of standardized methods to measure viscosity and the inherent nature of appetite make it difficult to pinpoint the reasons for inconsistent results of the effects of oats on satiety. Nevertheless, the majority of the evidence suggests that oat β-glucan has a positive effect on perceptions of satiety.

Keywords: appetite; dietary fiber; oats; satiety; β-glucan.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, U.S. Gov't, Non-P.H.S.
  • Review

MeSH terms

  • Appetite / drug effects*
  • Avena / chemistry*
  • Diet*
  • Dietary Fiber / pharmacology*
  • Humans
  • Perception
  • Satiation / drug effects*
  • Viscosity
  • beta-Glucans / pharmacology*

Substances

  • Dietary Fiber
  • beta-Glucans
  • beta-glucan, (1-3)(1-4)-