The ketogenic diet is very low in carbohydrates. Grain products, legumes and the majority of fruits and vegetables are therefore excluded. As a result, the total load of fermentable carbohydrates (FODMAPs) consumed is reduced. However, some foods which are very high in FODMAPs continue to be consumed such as cauliflower, avocado, garlic, onion and dairy products. Thus, the variety available with a ketogenic diet that is also low in FODMAPs is very limited which means there is a very high risk of nutritional deficiencies. To learn more about ketogenic diet for IBS read here