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Short-chain fatty acid

A short-chain fatty acid (SCFA) is a type of fatty acid with a relatively short chain of carbon atoms (usually 3-6). When bacteria in your gut ferment dietary fiber, they produce them.

Explanation:

Think of it like this:

  • Fatty acids are like long chains used for energy storage.
  • SCFAs are like shorter, leftover pieces produced by gut bacteria “chewing” on fiber.
  • These short pieces become an important energy source for your gut cells and can influence overall health.

Examples of where SCFAs come from:

  • Dietary fiber: Found in fruits, vegetables, and whole grains.
  • Prebiotics: These are food sources for gut bacteria that promote SCFA production.
    • Examples: Chicory root, garlic, onions.

Examples of SCFA benefits:

  • Gut health: SCFAs help maintain a healthy gut lining and support good gut bacteria.
  • Energy source: Provide energy for cells in the colon (large intestine).
  • Anti-inflammatory: May help reduce inflammation in the gut.

Etymology:

  • Short-chain: Refers to the relatively few carbon atoms in the molecule compared to other fatty acids.
  • Fatty acid:
    • “Fatty” refers to the molecule’s greasy nature.
    • “Acid” refers to a specific chemical property.