Inulin, a lesser-known dietary fibre, offers a range of health benefits, from improved gut health to weight management. In this article, we explore the advantages of incorporating inulin into your diet, its sources, recommended dosages, and potential side effects.
The Wonders of Inulin
Inulin is a plant-based, non-digestible carbohydrate and dietary fibre that offers several health benefits, including:
• Improved Gut Health: Inulin promotes bowel health by positively affecting intestinal biota. Studies have shown that it can improve stool frequency and consistency[3,4].
• Enhanced Calcium Absorption: Regular consumption of inulin-type fructans has been linked to improved calcium absorption and bone mineral mass in adolescents.
• Weight Management Support: Inulin can help with weight management by reducing hunger and regulating appetite[7,8]. As a soluble fibre, it contributes to a feeling of fullness.
• Blood Sugar Regulation: By slowing digestion and allowing for a more gradual release of sugar, inulin aids in maintaining healthy blood sugar levels. This property makes it potentially useful for managing Type 2 diabetes.
• Cooking and Food Preparation Applications: Inulin can be used in cooking to replace unhealthy fats and sugars. It can also alter food texture and improve taste.
Natural Sources of Inulin
Inulin can be found in various plant-based foods, with chicory root being the most abundant source. Other sources of inulin include onions, garlic, and some whole grains.
Recommended Inulin Dosage
UK government guidelines recommend a daily fibre intake of 30g for adults and children over 16. Studies have shown that 10g of inulin per day can have a significant effect on improving constipation. Inulin supplements, such as inulin powder, are an easy way to boost fibre intake. A typical supplement provides 4.5g of fibre per serving and can be consumed up to three times a day.
Inulin as a Prebiotic
Inulin is classified as a prebiotic, a type of fructo-oligosaccharide that promotes gut health. The British Nutrition Foundation asserts that regular consumption of prebiotics may enhance calcium absorption and support immune function.
How do prebiotics like inulin work? They have two primary functions:
• Stimulating the growth of friendly gut bacteria such as Lactobacillus sp., Bifidobacteria sp., and Lactococcus sp.
• Inhibiting the growth of potentially harmful bacteria, including Clostridia and Escherichia coli.
Incorporating Inulin into Your Diet
Inulin can be easily added to your diet through various means, such as:
• Consuming high-inulin foods like chicory root, onions, and garlic.
• Using inulin powder supplements in smoothies, yoghurt, or oatmeal.
• Choosing food products containing inulin, often listed as polysaccharides or fructooligosaccharides (FOS) on ingredients labels.
While inulin offers several health benefits, it is essential to consider the following when incorporating it into your diet:
• Gradually increase your inulin intake to monitor and manage potential side effects.
• Consult you GP first of all if you have a history of IBS, FODMAP intolerance, or any concerns regarding inulin consumption.
• Maintain a balanced diet that includes a variety of fibre sources, as inulin should not be relied upon as the sole source of dietary fibre.
Inulin is a powerful fibre that offers a range of health benefits, including supporting gut health, aiding weight management, and regulating blood sugar levels. By incorporating inulin into your diet, you can improve your overall wellness. Remember to speak to your GP if you have any concerns about inulin consumption or if you are pregnant, trying to conceive, or have FODMAP intolerance. With a balanced diet and a focus on high-quality inulin sources, you can enjoy the advantages this remarkable fibre has to offer.
Gibson, G. R., & Roberfroid, M. B. (1995). Dietary modulation of the human colonic microbiota: introducing the concept of prebiotics. The Journal of Nutrition, 125(6), 1401-1412. [https://doi.org/10.1093/jn/125.6.1401]
Ramirez-Farias, C., Slezak, K., Fuller, Z., Duncan, A., Holtrop, G., & Louis, P. (2009). Effect of inulin on the human gut microbiota: stimulation of Bifidobacterium adolescentis and Faecalibacterium prausnitzii. British Journal of Nutrition, 101(4), 541-550. [https://doi.org/10.1017/S0007114508019880]
Abrams, S. A., Griffin, I. J., Hawthorne, K. M., Liang, L., Gunn, S. K., Darlington, G., & Ellis, K. J. (2005). A combination of prebiotic short- and long-chain inulin-type fructans enhances calcium absorption and bone mineralization in young adolescents. The American Journal of Clinical Nutrition, 82(2), 471-476. [https://doi.org/10.1093/ajcn.82.2.471]
Meyer, D., & Stasse-Wolthuis, M. (2009). The bifidogenic effect of inulin and oligofructose and its consequences for gut health. European Journal of Clinical Nutrition, 63(11), 1277-1289. [https://doi.org/10.1038/ejcn.2009.64]
Cani, P. D., Neyrinck, A. M., Fava, F., Knauf, C., Burcelin, R. G., Tuohy, K. M., ... & Delzenne, N. M. (2007). Selective increases of bifidobacteria in gut microflora improve high-fat-diet-induced diabetes in mice through a mechanism associated with endotoxaemia. Diabetologia, 50(11), 2374-2383. [https://doi.org/10.1007/s00125-007-0791-0]
Parnell, J. A., & Reimer, R. A. (2009). Weight loss during oligofructose supplementation is associated with decreased ghrelin and increased peptide YY in overweight and obese adults. The American Journal of Clinical Nutrition, 89(6), 1751-1759. [https://doi.org/10.3945/ajcn.2009.27465]
Guess, N. D., Dornhorst, A., & Oliver, N. (2015). A randomized controlled trial: the effect of inulin on weight management and ectopic fat in subjects with prediabetes. Nutrition & Metabolism, 12, 36. [https://doi.org/10.1186/s12986-015-0033-2]
Lightowler, H., & Henry, C. J. K. (2009). Inulin and oligofructose: effects on appetite and energy intake. In Inulin and oligofructose: health benefits and claims—a critical review. Journal of Nutrition and Food Sciences, 2(2), 1-30. [https://doi.org/10.1007/978-1-4020-9229-5_2]
Whelan, K. (2011). Probiotics and prebiotics in the management of irritable bowel syndrome: a review of recent clinical trials and systematic reviews. Current Opinion in Clinical Nutrition and Metabolic Care, 14(6), 581-587. [https://doi.org/10.1097/MCO.0b013e32834b8082]
Roberfroid, M., Gibson, G. R., Hoyles, L., McCartney, A. L., Rastall, R., Rowland, I., ... & Meheust, A. (2010). Prebiotic effects: metabolic and health benefits. British Journal of Nutrition, 104(S2), S1-S63. [https://doi.org/10.1017/S0007114510003363]