For most of us, the form of stool we excrete can vary widely depending, in part, on what we've been doing.
The make-up of our gut is constantly changing and affects everything from our immune system and digestion, to our brain function.
Links have been made between the community of bacteria in your gut and depression, pain, stress and sleep. So what does the science say?
Gordon has made humble gut microbes one of the most talked about health topics of the last decade.
There's more to fermented foods than a good meal. Scientists are learning just how such foods encourage the growth of probiotics and how this keeps people healthy.
Poo-analysis tests conducted by the Soviet leader may not have been as crazy as they sound.
Your thoughts, moods and behaviours are the product of your brain. What you eat affects the chemicals in your brain, and thus your moods and behaviours.