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The Role of Prebiotic Fibre for Gut Health

The Role of Prebiotic Fibre for Gut Health

Written by Shaynie Ashkenazi BSc. MHumNutr., FodShop Founder & Registered Associate Nutritionist

Introduction to Dietary Fibre

Getting enough dietary fibre into your daily diet is essential for normal functioning of the gastrointestinal system. It has also shown to reduce risk of a number of chronic diseases including diabetes, heart disease, and certain cancers.

The topic of dietary fibre is a complex one, as there are many different types of dietary fibres, all of which work differently in the human body, thereby conferring a vast range of health benefits.

Generally speaking, dietary fibre cannot be completely broken down by human digestive enzymes. 

Soluble fibre is a type of fibre which dissolves in water to form a gel-like substances, helping to lower blood glucose and blood cholesterol levels.

Insoluble fibre comprises indigestible carbohydrate that is unable to dissolve in water. Insoluble fibre adds bulk to our stools, helping make them easier to pass.

What is Prebiotic Fibre, and How Does it Impact Gut Health?

Dietary prebiotic fibres are important for gut health as they nourish the resident good bacteria, naturally present in the gut.

Prebiotics promote the growth of, and boost increased numbers of, friendly bacteria i.e. they are "bifidogenic".

Some research has also shown that prebiotic fibres may help with various digestive problems, and even boost the immune system. Prebiotic foods have also been shown to improve metabolic health and even help prevent certain diseases.

What are Some Examples of Prebiotic Dietary Fibres?

Prebiotic fibres are naturally found in the below foods:

  • Chicory root
  • Jerusalem artichoke
  • Garlic
  • Onions
  • Leeks
  • Dandelion greens
  • Asparagus
  • Bananas

If you have IBS and follow a low FODMAP diet, however, you'll notice that most of the above-mentioned prebiotic fibre-rich foods are actually high FODMAP!

If you are following a low FODMAP diet, your Accredited Practising Dietitian may have advised that you consume more dietary fibre to help meet your nutrition requirements and/or assist in managing IBS symptoms of constipation and/or diarrhoea.

Including low FODMAP varieties of dietary fibre, including oats, semi-ripened banana, cooked-then-cooled potato (potato salad), and cooked then re-heated gluten free pasta may be a sensible option to get more fibre in, without risking triggering IBS symptoms.

Why is it Important to Include More Dietary Fibre?

The national recommended fibre target for Australian adults is 30g per day.

Most individuals struggle to get this amount of fibre into their diets each day, making the idea of fibre supplementation an attractive one to help meet the daily target.

If you have IBS, choosing the right fibre can be challenging as most prebiotic fibre supplements commercially available in pharmacies, supermarkets & other independent health food stores contain inulin and wheat dextrin. The quick fermentation of these fibres in the gut can cause gas & bloating.

Psyllium husk is a good low FODMAP soluble fibre option, as it may improve constipation and diarrhoea i.e. regulate the stool, while also assisting with glycaemic control & satiety.

Some individuals, however, complain that this supplement is grainy and does not mix well with liquids; a major barrier to consumption during daily activities.

What Sets Sunfiber Apart from Other Prebiotic Fibres?

Sunfiber is a soluble prebiotic fibre that is unique compared to other non-galactomannan based fibres (locust bean gum, fenugreek, guar gum etc..).

When fermented in the gut, prebiotic fibres produce “short chain fatty acids” (SCFA). The rate of production of SCFAs is very important, because if fermentation occurs rapidly i.e. in the case of inulin, chicory root and other high FODMAP soluble fibres, the result is excess flatulence & bloating. 

The fermentation process that Sunfiber undergoes in the gut is extremely slow, resulting in a higher total amount of SCFAs that are produced over a longer period of time, leading to much less bloating, gas, and discomfort.

Click on the buttons below to read further research, and access further resources, for clinically-proven Sunfiber:

View Further Research 

Download FAQ's 

Get My Poop Chart 

References

Lockyer & Stanner (2016). Dietary fibre and the prevention of chronic disease – should health professionals be doing more to raise awareness? Volume 41, Issue 3, Pages 214-231 https://doi.org/10.1111/nbu.12212

Nutrient References Values Australia New Zealand (2019). Dietary Fibre. https://www.nrv.gov.au/nutrients/dietary-fibre

Pham VT, Seifert N, Richard N, Raederstorff D, Steinert RE, Prudence K, Mohajeri MH. 2018The effects of fermentation products of prebiotic fibres on gut barrier and immune functions in vitroPeerJ 6:e5288 

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