Oats are rich in beta-glucan — a soluble fibre that forms a gel in your digestive tract, slowing glucose absorption and feeding beneficial gut bacteria. They're one of the most researched prebiotic foods, consistently linked to improved gut microbiome diversity, lower cholesterol, and better blood sugar control. A staple of the EatoBiotics plate.
Why it matters
Beta-Glucan Rich
The highest source of beta-glucan of any grain — 3-4g per serving of rolled oats.
Feeds the Microbiome
Directly increases Bifidobacterium populations — one of the most beneficial gut bacterial families.
Blood Sugar Regulation
Slows glucose absorption, reducing post-meal blood sugar spikes.
Cholesterol Reduction
Beta-glucan binds to bile acids in the digestive tract, lowering LDL cholesterol.
How to eat it
Overnight oats are the easiest win — combine rolled oats with kefir or yogurt and leave overnight. The combination of prebiotic oats and probiotic kefir is a direct one-two punch for your microbiome. Cook them slowly with water for maximum beta-glucan release. Add banana and ground flaxseed for additional prebiotic benefit.
Beta-glucan from oats has been shown to significantly increase populations of Bifidobacterium and Lactobacillus while also reducing LDL cholesterol by up to 10%.
Source: Thies et al., British Journal of Nutrition, 2014
Pairs well with
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