Gut health has become something of a wellness buzzword – so we asked experts what the gut microbiome is and how it affects our health

Human bodies are mysterious. They are full of wonders (brains, kidneys) and horrors (earwax). We spend our entire lives in these flesh sacks, and yet we don’t fully know how they work, or how jeans will fit them from one day to the next

And the gut microbiome might be one of the most bewildering corners.