Probiotics are bacteria shown to have a beneficial effect supporting a healthy microbiome. Recognised strains include Lactobacillus and Bifidobacterium and can be found in live yoghurt and probiotic shot drinks. Fermented foods such as kefir, kimchi and sauerkraut are also beneficial for gut health and contain many different strains of bacteria. Furthermore, VLCDs accompanying many cleanse protocols could significantly increase your risk of nutritional deficiencies. Of course, this risk may vary depending on the duration and degree of restriction of a particular cleanse . Several studies in people with type 2 diabetes noticed that a VLCD regimen significantly reduced fasting blood sugar levels . It should be noted that most of the VLCDs in these studies also incorporated total nutrition needs as part of the dietary strategy.