Prebiotics

Prebiotics provide health benefits by specifically altering the microorganisms within or on your body, most commonly in the digestive tract.

Looking for a way to put your body’s microorganisms to work in improving your health? Prebiotics are substances that act as food for the microorganisms in or on your body, benefitting your health. They’re scientifically defined as “substrates that are selectively utilized by host microorganisms conferring a health benefit.”

Some prebiotics are tested and shown to improve digestive function, support the body’s natural defences, improve mineral absorption or help regulate satiety and energy balance. While prebiotics can be found in foods such as onions, garlic, bananas, chicory root and Jerusalem artichokes, typically the prebiotics in these foods are found at low levels.

Prebiotics include many different types of substances, but the most studied prebiotics to date are specific types of fiber. But remember, not all dietary fibers are prebiotics. Different fibers may or may not meet the prebiotic criteria of being utilized by gut microbes to provide specific health benefits.

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More Resources on Prebiotics

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  • Episode 15: A primer on prebiotics

  • Episode 22: Biotics in animal and human nutrition

  • Episode 5: Prebiotics for animal health