Why Your Gut Needs Fermented Foods

Fermented foods are foods transformed by friendly microbes: sauerkraut, kimchi, yogurt, kefir, miso, tempeh, kombucha, real pickles and sourdough. During fermentation, bacteria and yeasts digest sugars and starches, creating tangy flavors, preserving the food and, in many cases, filling it with living microbes. Every traditional culture on Earth had its ferments, and modern research is discovering why: these foods help nourish the gut microbiome, the trillions of tiny beings who live in your digestive tract and help with digestion, immunity and even mood. Avoiding fermented foods means missing one of the oldest and simplest ways to care for your inner garden.

Your gut is not just a tube. It is a living ecosystem, and fermented foods are one of the ways you tend it.

Ferments around the world

• Germany and Eastern Europe: sauerkraut, sour pickles, kvass
• Korea: kimchi, eaten at almost every meal
• Japan: miso, natto, tamari, pickled vegetables
• Indonesia: tempeh
• India: yogurt, lassi, idli and dosa batter
• Caucasus mountains: kefir
• China: kombucha is believed to have originated there over two thousand years ago
• Africa: fermented grains like injera in Ethiopia and ogi in West Africa

Fermentation was how people kept food through winter, long before refrigerators. It was also, without anyone knowing the science, how they cared for their guts.

What the research says

A 2021 study at Stanford University found that people who ate a diet high in fermented foods for ten weeks had a more diverse gut microbiome and lower levels of several markers of inflammation. Microbiome diversity is generally considered a sign of a healthy gut ecosystem. Research is young and ongoing, but the pattern is encouraging.

Fermented foods may also:

• Make some nutrients easier to absorb
• Break down some lactose in dairy, which is why many lactose-sensitive people tolerate yogurt and kefir
• Provide compounds made by microbes during fermentation

Not all "fermented" foods are alive

Many store-bought pickles and sauerkraut are made with vinegar and heat-treated, so they contain no live cultures. Look for products in the refrigerated section labeled "raw," "unpasteurized," or "live and active cultures." Sourdough bread is fermented, but baking kills the microbes, though the fermentation still changes the bread in ways many people find easier to digest.

How to begin

1. Start small. A forkful of sauerkraut or a few spoonfuls of kefir a day. Some people feel bloated if they start with too much.
2. Add a ferment to one meal a day. Kimchi with eggs, miso in soup, yogurt with fruit.
3. Rotate. Different ferments carry different microbes.
4. Feed your microbes fiber too. Microbes love vegetables, beans, oats, onions, garlic and green bananas.

Easy homemade sauerkraut

You need: 1 medium cabbage, about 1 tablespoon unrefined salt, a clean glass jar.

1. Remove a couple of outer leaves and set them aside. Finely slice the cabbage.
2. Place it in a large bowl with the salt. Massage with your hands for 5 to 10 minutes until it softens and releases liquid.
3. Pack it tightly into the jar, pressing down until the liquid rises above the cabbage.
4. Fold an outer leaf on top and weigh it down so everything stays under the brine.
5. Cover loosely and leave at room temperature, out of direct sun, for 1 to 4 weeks. Taste it after a week.
6. When it tastes good to you, close the lid and refrigerate.

Bless it as you pack it. You are inviting life into your kitchen.

Who should be careful

If you have a weakened immune system, histamine intolerance, or certain gut conditions, fermented foods may not suit you. Start slowly and check with a trusted practitioner.

The spiritual side

Fermentation teaches patience and trust. You prepare the jar, then let unseen helpers do their work in the dark. Much of spiritual growth happens the same way.

This is part of our Gentle Detox Series. Continue with Irregular Bowel Movements and Gluten, Seed Oils, Sugar and Dairy.

Read next

Companion readings chosen for this same theme.

Irregular Bowel Movements: What Your Gut May Be Telling YouGluten, Seed Oils, Sugar and Dairy: The Four Foods Many People Quietly CutGut Cleanse for Clarity: Feel-Light Organic Framing

With love and light,
Infused Lights