Fructo-oligosaccharides (FOSs) promote the growth of bifidobacteria and lactobacilli. http://www.infotrieve.com/newmedline/detai...cteria&count=34 Food sources of FOS are bananas, Jerusalem artichoke, onions, asparagus, and garlic.Spirulina might also help promote the growth of these bacteria From Pizzorno: Textbook of Natural Medicine, 2nd ed.,And get this- maybe they will introduce cereal which promote the growth of these friendly bacteria http://www.infotrieve.com/newmedline/detai...cteria&count=34 Combining probiotics with maltodextrins, fructo-oligosaccharides and polyunsaturated fatty acids. improves the probiotic effect.However FOS might increase gas(I think because of the fructo part of it)Isomalto-oligosaccharides and Galacto-oligosaccharides were effective at increasing numbers of bifidobacteria and lactate whilst generating the least gas. http://www.infotrieve.com/newmedline/detai...cteria&count=34