Fermented foods like yogurt, sauerkraut, kimchi, and kombucha contain live bacteria that may support digestive health. This category covers foods that have undergone fermentation—a process where beneficial microorganisms break down sugars and create acids—and how they fit into everyday eating. You'll find information about which fermented foods contain active cultures, how to choose them at the store, and how to make straightforward versions at home.

The articles here answer practical questions: What's actually in fermented foods and how do they work in your body? Which ones have the most active cultures, and does that matter? How much should you eat, and when might fermentation cause bloating or gas? You'll also learn which fermented foods are easiest to prepare yourself and which store-bought options are worth the cost.