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Fermented foods

Updated 3/9/2026
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Research Summary

Fermented foods are foods and beverages produced through controlled microbial growth and the enzymatic conversion of food components by bacteria, yeasts, or fungi. This process transforms raw ingredients into nutrient-dense ecosystems teeming with live microorganisms and bioactive compounds. Common examples include:

  • yogurt
  • kefir
  • kimchi
  • sauerkraut
  • kombucha
  • miso
  • tempeh
  • sourdough bread

Unlike processed foods, traditional fermented products are "living foods" that contain unique metabolites not found in their raw counterparts.

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The information provided on this page is NOT medical advice. Please consult a doctor before using a product or making lifestyle changes.