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5 Ways To Incorporate More Fibre and Fermented Foods in Your Diet?

Updated: Jul 3

Understanding Fibre, Fermented Foods, and the Gut Microbiome

Your gut microbiome consists of a diverse community of bacteria, viruses, fungi, and other microorganisms residing in your colon (large intestine). The composition of this microbiome is influenced by various factors, including your diet, environment, and lifestyle. Experts often liken the gut microbiome to a hidden organ due to its significant role in numerous bodily functions, such as bolstering the immune system, reducing chronic inflammation, maintaining the health of intestinal cells, and producing essential micronutrients not typically found in a standard diet.

There's a fascinating connection between your gut and brain through what's known as the gut-brain axis. Changes in the gut microbiome have been associated with mood and mental health disorders, including depression and anxiety, though the direct causative relationship is still under investigation. A healthy diet, particularly one low in processed foods, is crucial for maintaining a robust gut microbiome. Increasing evidence suggests that fibre and fermented foods are particularly beneficial for gut health.

The Role of Fibre in Your Diet

Fibre's primary function is to aid digestion by softening and adding bulk to stool, which helps it move smoothly through the intestines. However, the benefits of fibre extend far beyond digestive health. A high-fibre diet can help manage body weight, reduce LDL (bad) cholesterol levels, and lower the risk of heart disease, type 2 diabetes, and certain cancers. Fibre is also known to stabilize blood sugar levels and help maintain a healthy weight by promoting a feeling of fullness and reducing overall calorie intake.

Types of Fibre and Their Benefits

There are two main types of fibre: insoluble and soluble. Insoluble fibre helps you feel full and promotes regular bowel movements, while soluble fibre helps lower cholesterol and blood sugar levels. However, recent research suggests that focusing on the total amount of fibre in your diet is more important than concentrating on the type of fibre. Both types of fibre have unique benefits, and a balanced diet should include a variety of fibre sources.

Insoluble Fibre: This type of fibre does not dissolve in water. It adds bulk to the stool and helps food pass more quickly through the stomach and intestines. It is found in foods like whole grains, nuts, seeds, and the skins of fruits and vegetables.

Soluble Fibre: This type of fibre dissolves in water to form a gel-like substance. It can help lower blood cholesterol and glucose levels. Soluble fibre is found in foods such as oats, peas, beans, apples, citrus fruits, carrots, barley, and psyllium.

5 Ways to Incorporate More Fibre into Your Diet

If you want to increase your fibre intake, it's essential to do so gradually and ensure you drink plenty of water. Sudden increases in fibre can lead to gas, bloating, diarrhoea, and stomach cramps. Your digestive system will adjust to higher fibre levels over a week or so.

The general guideline for fibre intake is 14 grams for every 1,000 calories consumed. While your specific calorie needs will vary based on your activity level, it's easier to focus on incorporating more fibre-rich foods into your diet rather than meticulously tracking fibre grams.

Tips for Increasing Fibre Intake:

  1. Start your day with a high-fibre breakfast, such as oatmeal topped with fruits and nuts.

  2. Snack on fruits, vegetables, and whole grains instead of processed foods.

  3. Incorporate beans, lentils, and legumes into soups, salads, and stews.

  4. Choose whole-grain bread, pasta, and rice over their refined counterparts.

  5. Add seeds, such as chia or flaxseeds, to smoothies, yogurt, and baked goods.

Foods Rich in Fibre

Fibre can be found in a variety of foods, including fruits, vegetables, legumes, nuts, seeds, and whole grains. The Dietary Guidelines for Americans provide a comprehensive list of fibre-rich foods and their calorie counts.

High-Fibre Foods:

  • Fruits: Berries, apples, oranges, pears, and bananas.

  • Vegetables: Broccoli, carrots, Brussels sprouts, and leafy greens.

  • Legumes: Beans, lentils, and peas.

  • Nuts and Seeds: Almonds, chia seeds, flaxseeds, and sunflower seeds.

  • Whole Grains: Oats, quinoa, barley, and whole-wheat products.

While over-the-counter fibre supplements (available as capsules, powders, and chewable tablets) can be useful if you struggle to get enough fibre from your diet, they shouldn't be your primary source of fibre. It's best to obtain fibre from whole foods whenever possible.

6. The Benefits of Fermented Foods

Fermented foods are rich in both prebiotics (substances that induce the growth of beneficial microorganisms) and probiotics (live beneficial bacteria). Both prebiotics and probiotics play a crucial role in maintaining a healthy gut microbiome.

Fermented foods undergo a process called lacto-fermentation, where natural bacteria consume the sugar and starch in the food, creating lactic acid. This process not only removes simple sugars but also produces beneficial bacteria like Lactobacillus and Bifidobacterium. These beneficial microbes help maintain the balance of the gut microbiome, promoting digestive health and supporting the immune system.

7. The Impact of Fermented Foods on Health

In addition to aiding digestion and nutrient absorption, a healthy gut supports your immune system, helping to fight infections and protect against inflammation. Some studies suggest that certain probiotics can alleviate symptoms of gut-related conditions such as inflammatory bowel disease and irritable bowel syndrome, though not all experts agree on this. A diet rich in fermented foods can also improve mental health by supporting the gut-brain axis, which links gut health to mood and cognitive functions.

8. Incorporating Fermented Foods into Your Diet

There is no established daily requirement for prebiotics or probiotics, making determining the exact types and quantities of fermented foods you should consume is challenging. The general advice is to include more fermented foods in your diet regularly.

Fermented foods come in a variety of flavours and textures, depending on the specific bacteria used in fermentation. Yogurt is one of the most popular fermented foods, and you'll want to look for labels that mention "live and active cultures." Other options include kimchi, sauerkraut, kombucha, and pickles.

5 Tips for Adding Fermented Foods to Your Diet:

  1. Start your day with yogurt or kefir, and add fresh fruits and nuts for extra flavour and nutrition.

  2. Use sauerkraut or kimchi as a condiment for sandwiches, burgers, and salads.

  3. Drink kombucha as a refreshing, probiotic-rich beverage.

  4. Add fermented vegetables to your meals for a tangy and nutritious boost.

  5. Incorporate miso into soups, marinades, and dressings for a savory umami flavor and a dose of probiotics.

While probiotic supplements are available, they are not regulated by the FDA, meaning there's no guarantee that the bacteria listed on the label are present or effective. Therefore, it's best to obtain probiotics from fermented foods.


Enhancing your diet with fibre and fermented foods can significantly benefit your gut health and overall well-being. Fibre aids digestion, helps control weight, and reduces the risk of various diseases, while fermented foods support a healthy gut microbiome and immune system.

To learn more about the benefits of a fibre- and fermented food-rich diet, and for personalized nutritional advice, visit The Good Health Clinic. Our experts are dedicated to helping you achieve optimal health through informed dietary choices.



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