Ika Rahma / Getty Images Miso is a fermented food made from soybeans and grains. It’s used as a seasoning in Japanese cuisine. There are multiple types of miso. These types are classified according to the grains used in the process, such as rice, barley, and mixed miso.1

It contains soybean proteins, sodium, small amounts of vitamins and minerals, and non-nutritive compounds that have certain health-promoting properties. As a fermented food, miso contains probiotics that promote gut health. It’s also rich in antioxidants, which can reduce damage and promote healthy cells.1 Has Antioxidant Properties

Fermented soybean foods, including miso, contain antioxidant compounds. Antioxidants help prevent cell damage and disease by neutralizing free radicals, naturally occurring compounds that are a by-product of metabolism. Free radicals also occur as a response to external factors such as pollution, ultraviolet light, and smoking.2

Oxidative stress—a bodily state that can cause cell damage and contribute to disease—occurs when free radical levels become too high. Eating foods high in antioxidants , like miso, helps keep free radicals in check, reducing disease risk.2 Promotes Gut Health

Fermented foods are made using microorganisms such as bacteria and yeast. These microorganisms metabolize foods—typically dairy, soybean, or tea—into fermented products such as kefir , miso, and kombucha. The final fermented product has a distinct taste and contains beneficial bacteria that can improve the health of your gut.3

Miso contains probiotics such as Bacillus species, which are beneficial bacteria for humans.4 Probiotics can improve gut health by inhibiting pathogens (disease-causing bacteria), producing antimicrobial compounds, supporting the gut barrier, and improving nutrient absorption.5

Probiotics may also improve a wide range of health conditions , including bowel diseases, antibiotic-associated diarrhea, constipation, allergy-related conditions such as atopic dermatitis, and conditions affecting the skin and respiratory system.67

The Top 8 Fermented Foods to Eat for Gut Health Could Support Heart Health

Consuming miso may benefit heart health. Although miso is high in sodium, it’s also high in fiber and health-promoting compounds, both of which can support heart health.8A randomized-controlled study looked at how miso soup affects nighttime blood pressure. People with slightly high or stage […]

Health Benefits of Miso