A few years ago the concept of 'probiotics' was not well-known, but these days health foods and supplements that supply your gut with ‘friendly’ bacteria can be found in just about every supermarket. But something you don’t hear about that much are prebiotics… so what are they exactly? Probiotics, prebiotics… what’s the difference? To better understand prebiotics, here’s a quick recap on probiotics and what they can do. Living in your gastrointestinal tract are more than a trillion micro-organisms, including bacteria, viruses, fungi and (disturbingly) parasites, all collectively known as your gut microbiota (you’ll also hear them called gut biota,...