Fermented Foods for Gut Health: Benefits and Rotation

Soukrout, kimchi, kombucha — these fermented foods line supermarket shelves, promising to keep our insides as healthy as our outsides. For all the bold claims, fermented foods have an edge that is much less hyped: they’re one way to ease the mounting problem of microplastics in our diet. This is not a speculative possibility, but a result of a specific bacteria strain that lives in kimchi, bound to plastic particles and, according to research, doubles the body's rate of clearing them. Research at the World Institute of Kimchi shows the benefits extend beyond waste disposal: studying up on five power fermented foods might be one of the oldest, cheapest ways to ensure some of your microbes have your back.

Fermentation 101

Fermented foods are those whose sugars and starches are converted to alcohols and acids by microbes, which act as a preservative. Two key factors make fermented foods stand out from each food choice. Fermentation boosts nutrition. Fermentation also maintains the food’s shelf life. Kimchi, sauerkraut, and kefir are just a few examples of fermented foods. Behind their delicious tastes and textures, the process creates an ideal, rich environment for the bacteria. Trillions of microbiota — hundreds of species — create an ecosystem that seems to have a symbiotic relationship with human health, specifically the gut and its immune health.

Looking for possibilities.

Beyond their other benefits, gut microbes may support specific, unique health functions. The fermented vegetables and tea are easy to purchase. It’s simple to add rotations of fermented foods into everyday meals, targeting the microbiome for better health. Adding fermented foods to daily meals might help, but it’s not magic bullets. They do work as preventative maintenance. Up to 70% of your immune system lives in your gastrointestinal tract, according to research. Fermented foods help improve your gut health, despite their limitations. Fermented foods have a wide array of health benefits, but it’s impossible to say how well they prevent diseases.

Science of Fermentation

The Live Food Debate

Fermentation is a natural process. The beneficial bacteria in fermented foods are possible only when the foods are alive, though. Fermented food manufacturers pasteurize their final products to slow spoilage, harming the food — and its benefits. Sauerkraut, kimchi, kefir, miso, and kombucha all offer a varied diet of live bacteria when unpasteurized. If consumers can’t see the label promising "live" or "raw," it’s “processed,” and the benefits are lost.

Probiotic Pills vs. Fermented Foods

Many people are confused about probiotics and fermented foods, believing them to be the same thing. Probiotics are live bacteria that can offer health benefits, but there is often confusion about what's live and what's not. Fermented foods are unique because they’re packed with live bacteria. Probiotic pills can contain live bacteria as well, but their process for surviving stomach acids is less than ideal. This is where the difference lies in the gut microbiome.

The Bacterial Diversity in Fermented Foods

Kimchi, for example, can contain hundreds of strains of unique bacteria, depending on the recipe. In contrast, fermented milk kefir contains fewer bacteria, but has a wide range of yeasts. The microbiome is not one-size-fits-all, though. Fermented foods are a blessing, taking the usage of sauerkraut, kimchi, kefir, miso, and kombucha into one’s weekly rotation to achieve optimal gut health.

Add Fermented Foods to Your Diet

After learning about the gut's microbiome, adding fermented foods to meals seems a natural progression. The key lies in enjoying a variety of fermented foods each week. When shopping and prepping, keep these details in mind:

• Variety: A varied diet of fermented foods helps ensure a more diverse microbiome, which promotes overall health.
• Labeling: Always check the label. Purchasing “live” or “raw” foods ensures the product is not pasteurized and contains beneficial bacteria.
• Types: Sauerkraut, kimchi, kefir, miso, and kombucha are a few examples of daily and weekly food.
• Storage: Storage is critical to maintaining the product's shelf life. Always check before buying for efficiency.

Study Your Gang of Gut Allies

The most interesting aspect of fermented foods is they are all different and varied. Reading up on the health benefits of specific foods can help readers choose the best. There are often gut health books that go into deep dives on the microbiome, and books on the fermentation process. The real reading comes in the ingredients, though. Researching fermented foods in grocery stores can help people understand the benefits they offer.