Long before fridges existed, people preserved food by fermenting it. Friendly bacteria and yeasts turn milk into yogurt, cabbage into sauerkraut and kimchi, and soybeans into miso and tempeh. Many of these foods contain live microbes that join the community of bacteria already living in your gut, where they help with digestion, immunity and even mood.
Why your gut loves them
Your gut is home to trillions of microbes that help break down food, make some vitamins and train your immune system. Fermented foods with live cultures can add to this variety, and studies suggest a more varied gut community is linked with better health. Fermentation can also make some foods easier to digest, such as lactose in yogurt.
Choosing the right products
Look for labels that say live or active cultures. Many shop-bought pickles are made with vinegar rather than fermentation, and some products are heated after fermenting, which kills the helpful microbes. Choose plain yogurt and kefir where you can, as flavoured versions often carry a lot of added sugar.
Starting slowly
If fermented foods are new to you, start with a small spoonful a day and build up. Some people notice a little extra wind at first while the gut adjusts. Pair fermented foods with plenty of fibre from vegetables, fruit, beans and whole grains, because fibre is the food your gut bacteria live on.
Fermented foods to try
Mix and match these through the week:
- Plain yogurt or kefir with breakfast
- A spoonful of sauerkraut or kimchi with lunch
- Miso soup as a warming starter
- Tempeh in a stir-fry with vegetables
- Sourdough bread with your favourite toppings
Feed your gut with variety. A little fermented food and plenty of fibre help the good bacteria flourish.
Doctor's tip: Kimchi, miso and sauerkraut can be high in salt. If you are watching your blood pressure, enjoy them in small portions and ask us for advice.
Struggling with bloating or an unsettled stomach? Our team can help you find the cause and build a gut-friendly eating plan.
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