Eating foods covered in bacteria may sound gross at first — and certainly, chowing down on foods contaminated with say, E. coli can be dangerous — but as we're learning more and more, there is such a thing as good bugs, too. In fact, you may have heard that your gut is already teeming with trillions of microbes, encompassing at least 1,000 different species, that aid in digestion, help boost your immune system, and possibly even regulate your mood. Known as probiotics, eating these various strains of "good" bacteria and yeasts found in fermented foods like yogurt (a probiotic classic) may help boost the diversity of your own personal bug garden in your gut, which in turn, may improve your health, especially in relation to certain digestive issues.
What's more exciting is that probiotics have also been linked to helping other health issues as well. For instance, in one paper, published last year in Psychiatry Research, scientists found that participants who ate more fermented foods were less likely to have social anxiety. Another study found that people who took probiotic supplements were less likely to ruminate on bad feelings, a tendency associated with both anxiety and depression.
Though many questions remain about which strains of live cultures (and at what dosage) are effective, the benefits of eating probiotic foods are promising. Plus, as Kim Larson, RDN, explains, many of them come packed with fiber, protein, and other useful nutrients. (They also have the added quality of being delicious.)
In other words, science has yet to work out all the details, but even if these foods don't solve your anxiety, they're worth adding to your diet — with "food" being the key word here, Larson says. Although you can get probiotic supplements, Larson doesn't recommend it because you don't always know that the bacteria will survive the trip through your stomach to your intestines — or even the trip home from the drugstore. "It’s very likely the number of bacteria have diminished from production to your taking them," she explains. "Save your money and buy real, whole food to get the live cultures."
Confusing things further is the fact that many companies have caught on to the potential in probiotics, with the result being lots of new foods lining the shelves touting health benefits without really measuring up. For example, one trendy probiotic food you won't find on this list: "Kombucha doesn’t make my list because of the food safety hazard issues," says Larson. "If it’s not handled properly — made commercially or at home — the bacterial culture can become contaminated."
Keep reading for a list of good gut foods that are worth the space on your plate.
Yogurt
Ah yes, we'll start with the classic. A not-so-fun fact: some yogurts might not actually contain enough probiotics to make a dent, and it's hard to tell which ones have the most. One thing you can do though is look for the "live & active cultures" seal, which means the product has a "significant" amount of good bugs, per the National Yogurt Association.
Larson's take: Greek yogurt is probably your best bet. In addition to a dose of probiotics, it can also boast up to 17 grams of protein, making it a great morning treat that'll keep you moving. Larson says she also loves yogurt because it can be made savory (add a few sliced almonds) or sweet (throw in some seasonal berries and honey).
Kefir
Kefir is a fermented milk drink. It's basically a drinkable yogurt that has even more strains oflive cultures, and it's been a health food store staple for decades. But, now, thanks to the interest in fermented foods, it comes in a variety of delicious flavors that make it taste even better, Larson says.
Sauerkraut & Kimchi
As different as these two foods may seem, they're both varieties of fermented cabbage. What makes them different? Sauerkraut also has four grams of fiber and a third of your daily vitamin C. Kimchi is also packed with vitamin A, which is important for health skin, teeth, and more.
Tempeh
Not to be confused with tofu, tempeh is a very versatile fermented soybean cake. You can fry it in the pan, slice it for a sandwich, or crumble it up into veggie chili — it's a probiotic blank slate.
"It's tasty when marinated and can be a nice change from tofu because of the firmer texture," says Larson. "It’s great source of high quality protein, too."
Fermented Cheese
This is one we're definitely excited about. Of the fermented cheeses, Larson says Gouda, cheddar, Swiss, Parmesan, and blue varieties are our best bets. Yet another reason to love mac and cheese. And grilled cheese. And cheese plates that come with wine...
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