Oats

Whole grain

What's inside oats, and where does it go in your body?

A whole grain with beta-glucan, a soluble fiber that forms a gel and can lower LDL cholesterol.

Notable for

Beta-glucan fiber, manganese, magnesium, thiamin, protein.

Label claim

The FDA allows a heart-health claim for foods with enough oat beta-glucan as part of a diet low in saturated fat and cholesterol.

Evidence & sources

• Soluble fiber from whole oats, as part of a diet low in saturated fat and cholesterol, may reduce the risk of heart disease. Evidence: regulatory. Known: FDA-authorized health claim based on trials showing LDL cholesterol reduction with about 3 g/day of oat beta-glucan. Unknown: Effect size varies between people. Source: US FDA, 21 CFR 101.81 — Soluble fiber from certain foods and risk of coronary heart disease (1997, amended).

Connected topics

• Fiber
• Manganese
• Magnesium
• Thiamin (B1)
• Carbohydrate

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General education only, not medical advice. Drafted Oct 2026 · pending qualified expert review.