What is IBS?
IBS affects about 5% to 20% of people worldwide. Diagnosis is based on symptoms of chronic abdominal pain, discomfort, bloating, and alteration of bowel habits, in the absence of overt organic disease. Diarrhoea or constipation may predominate, or they may alternate.
In routine clinical practice, IBS is diagnosed based on typical symptoms. The use of investigations is often restricted to a selected panel of tests that help to exclude known organic diseases that present with similar symptoms, such as inflammatory bowel disease or coeliac disease.
IBS is very poorly understood by conventional medicine. It is seen as a group of symptoms without a clear cause. As a result, the treatment of IBS is very much focused on symptom management. Unfortunately, in most cases, this only provides limited relief as it doesn’t address why the IBS is happening. IBS symptoms are sometimes exacerbated by stress and can be associated with psychological co-morbidities such as anxiety, depression, hypochondriasis and phobic disorders.
Why do we have IBS?
There is no single model or hypothesis can explain all aspects of the pathophysiology mechanism and cause of IBS. Traditionally, IBS has been conceptualised as a condition of visceral hypersensitivity (leading to abdominal discomfort or pain) and gastrointestinal motor disturbances (leading to diarrhoea or constipation), with no known underlying structural or biochemical explanation, but this concept is likely to be outdated, so, by definition, it is a heterogeneous disorder.
There are several different underlying disease mechanisms underlying these subtypes.
- Small Intestinal Bacterial Overgrowth (SIBO)
- Food Intolerance
- Low-grade Mucosal Inflammation, Immune activation, and Altered Intestinal Permeability
- Post Infection (PI-IBS)
- Serotonin Dysregulation
- Gut-Brain Dysfunction
- Altered Intestinal Microbiota
- Disordered Bile Salt Metabolism
FODMAP Diet for IBS
Varjú et al.'s (2017) meta-analysis confirms that a diet low in fermentable oligosaccharides, disaccharides, monosaccharides and polyols (FODMAP) significantly improves general symptoms and quality of life in patients with irritable bowel syndrome. FODMAP diet is a 2-phased intervention, with strict reduction of all slowly absorbed or indigestible short-chain carbohydrates (i.e., FODMAPs) followed by reintroducing specific FODMAPs according to tolerance. The efficacy of the elimination phase of the FODMAP diet is well established, but the success of maintaining this diet has been shown in only a few observational studies.
As a restrictive diet, the low-FODMAP diet carries a risk of nutritional inadequacy. According to Hill et al. (2017), a strict FODMAP restriction induces a potentially unfavourable gut microbiota, and the impact of this consequence on health is unknown.
Ref : Hill, P. Muir, J.G. Gibson, P.R. (2017). ‘Controversies and Recent Developments of the Low-FODMAP Diet.’ Gastroenterology & Hepatology, 13(1), pp.36-45.
Varjú, P. Farkas, N. Hegyi,P. et al. (2017).'Low Fermentable Oligosaccharides, Disaccharides, Monosaccharides and Polyols (FODMAP) Diet Improves Symptoms in Adults Suffering from Irritable Bowel Syndrome (IBS) : A Meta-Analysis of Clinical Studies.’ PLOS ONE, 12(8), p. e0182942.
5R Programme Protocol for IBS
Step 1. Remove
Trigger Food – Remove any type of gut irritant such as alcohol, caffeine, processed food and food additives, and specific type of carbohydrates. Gut Pathogens such as pathogenic bacteria, parasites, candida, and yeast. Botanical anti-microbials such as berberine, oregano, and neem allicin can be used at this stage.