me and my group are currently working on the 1st jojofree and completely mikrobiotabased diet, which takes into account, that nearly 80% of the obese people are 'suffering' from the wrong biota-population (>Firmicutes ./. Bacteroidetes!) and we could show, that - if once you change this inproper settlements of bowels to normal (within weeks!) with a given preparation of synbiotics (i.e. combination of pre- and probiotics) - you may avoid further gain of too much weight and stay in the limits of a safe BMI.
Greetings from Germany
D. Markert