What can you do to improve your gut health?
Eat more fiber
Two kinds of fiber can aid your gut: soluble fiber — the gummy fibers we get from foods like oatmeal and apple skins — and insoluble fiber, which serves as a laxative that helps push food through the digestive system. Nuts, whole grains, beans and legumes can be good sources of insoluble fiber, Ms. Czerwony said.
Dr. Sonnenburg published a study in August showing that fermented foods like yogurt, kimchi, kefir, sauerkraut and kombucha can increase the diversity of bacteria in the gut. His research found that people who ate six servings of fermented foods each day saw these benefits — the equivalent of consuming one cup of yogurt, one 16-ounce bottle of kombucha and one cup of kimchi in a day.
Past research has linked high levels of diversity in your gut microbiome to lower rates of obesity, diabetes and other health conditions.