Author and science journalist Michael Mosley wants to make the gut a healthier place to be.
Many of us are already fascinated with the state of our guts, sculling kefir, kombucha and other probiotics and munching on sourdough and other fermented foods.
We're realising that our microbiome, the colonies of microbes living on us and in us, plays an important role in keeping us happy and healthy.
Author and science journalist Michael Mosley once championed intermittent fasting and wrote a book devoted to preventing Type 2 diabetes.
Now he's written The Clever Guts Diet: How to revolutionise your body from the inside out.