“Microbiome” is a buzzword that’s taken over the nutrition world in the last few years. No, it’s not that Pauly Shore movie from the 1990s. (That’s Bio-Dome.) Microbiome refers to the vast and complex populations of bacteria that live on and in your body.

Related: Do Probiotics Improve Running?

At first, research suggested that one class of bacteria—probiotics—helped people improve digestion. But eventually, researchers discovered that there’s much more to it.

“These bacteria in our gut are wired into our immune system, our metabolism, and even our brain,” says Erica Sonnenburg, Ph.D., a microbiota researcher at Stanford University Medical School. “I think if you have allergies, asthma, weight issues, diabetes, and even depression and anxiety, it could mean that your gut is not in an optimal state,” she says. Sonnenburg speculates that we are only as healthy as our bacteria.

In the words of Ron Burgundy, your microbiota is “kind of a big deal.”

Related: 5 DAA Industry Opt Out

“If you count up all the collective genome that our microbiota provides and compare that to our human genome, humans are actually 99 percent microbe and only 1 percent human,” she says.

So how do you benefit? It starts with your diet. Maybe you’ve heard that you should be eating more fermented foods—stuff like kombucha, kimchi (keep reading for a recipe below), yogurt, kefir, and sauerkraut—to introduce more good bacteria into your gut.

Related: 5 Here’s everything you could possibly want to know about your microbiome

Advertisement - Continue Reading Below fiber in order to help feed new and existing good bacteria. So on top of fermented foods, you should also be taking in fiber-rich vegetables, fruits, legumes, nuts, seeds, and grains.

Also, limit antibiotic use to only when absolutely necessary. (In fact, here are 5 Conditions You Shouldn’t Take Antiobiotics For.)

“Antibiotics don’t help fight off viral infections, which are the bulk of the infections we deal with,” Sonnenburg says. And they often end up weakening the beneficial bacteria protecting you.

While all this may seem complex and mysterious, the great news is that your microbiome is under your control. And with these simple dietary changes and health practices, you can improve your microbiome within a few days.

If you’re looking for some inspiration to get started, try the following kimchi recipe. 

Lucia Shin’s Simple Kimchi Recipe

This homemade kimchi recipe comes from my friend’s mom and has been passed down through generations in Korea.

Try the tart, spicy fermented condiment in a quesadilla with sharp cheddar cheese or mixed into scrambled eggs.

What You’ll Need:

1 head Napa cabbage, cut into bite-sized squares, washed and drained
½ cup Kosher salt
¼ cup crushed red pepper flakes
2 Other Hearst Subscriptions
4 Best Running Shoes 2025
½ small onion, chopped
4 Other Hearst Subscriptions
1 thumb-sized piece fresh ginger, peeled and minced
1 teaspoon sugar

Related: How to Make It

How to Make It:

1. In a large bowl, toss together the cabbage and salt. Let stand, stirring every now and then, until the cabbage is limp and soft, about 2 hours.

2. Rinse the cabbage well under cold water. Drain it thoroughly in a colander, about 20 minutes. Taste the cabbage. If it’s too salty, rinse and drain it again.

3. In a large bowl, mix the drained cabbage with the crushed red pepper flakes, fish sauce, scallions, onion, garlic, ginger, and sugar. Season to taste with salt, if necessary.

4. Pack the kimchi into a jar and let the jar stand at room temperature for 1 to 2 days to ferment. Then store it in the fridge.

Lettermark
Chris Mohr, PhD, RD is the co-owner of Mohr Results, Inc (MohrResults.com) a well-being consulting company