What Is Gut Health? Exploring the Secrets of Fermented Foods, Dietary Fiber, and Beneficial Bacteria

What Is Gut Health? | The Basics of the Gut Environment

“Gut health” refers to lifestyle habits, dietary choices, exercise, and other efforts aimed at supporting a healthy gut environment. More than 100 trillion gut bacteria live in the intestines, where beneficial, harmful, and opportunistic bacteria coexist in balance. When this balance is disrupted, some people may notice changes in how their stomach or skin feels.

An increasing number of studies suggest a connection between the balance of gut bacteria and day-to-day physical condition. Paying attention to the diversity of gut bacteria has become one way people look after their health and appearance. This article focuses on the relationships among three especially popular aspects of gut health: fermented foods, dietary fiber, and beneficial bacteria.

• A term for efforts aimed at supporting a healthy gut environment
• The balance of beneficial, harmful, and opportunistic bacteria is key
• Fermented foods and dietary fiber are two mainstays of gut health

How the Gut Microbiome Works | Beneficial, Harmful, and Opportunistic Bacteria

The many types of bacteria that live in the gut are likened to a flower garden (flora), giving rise to the term “gut flora.” Also known as the gut microbiota, this community can be broadly divided into three types.

The goal of supporting gut health is to create an environment in which beneficial bacteria can thrive. “Fermented foods” and “dietary fiber” are essential to this.

Fermented Foods: A Key to Gut Health

There are many types of fermented foods, including yogurt, natto, kimchi, miso, nukazuke (rice-bran pickles), and cheese. They contain probiotics such as lactic acid bacteria and bifidobacteria, which are said to help increase beneficial bacteria in the gut.

When choosing, consider whether the product has no added ingredients and contains live bacteria. Trying different fermented foods to suit your preferences and constitution is another option.

Dietary Fiber and Oligosaccharides for a Healthy Gut

Beneficial gut bacteria are said to feed on dietary fiber and oligosaccharides. There are two types of dietary fiber—soluble and insoluble—and the key is to get a good balance of both.

• Soluble dietary fiber: seaweed, fruit, oatmeal, and more
• Insoluble dietary fiber: vegetables, legumes, whole grains, and more
• Oligosaccharides: bananas, onions, burdock root, asparagus, and more

Combining fermented foods with dietary fiber and oligosaccharides is thought to help create an environment in which beneficial gut bacteria can thrive.

Top Recommended Foods for Gut Health

Here are some foods rich in fermented ingredients or dietary fiber that are often recommended as staples for gut health.

Gradually adding these foods to your daily meals is the foundation of a gut health routine centered on fermented foods, dietary fiber, and beneficial bacteria.