Special episode offering advice on improving health and well-being through food. Jimmy Doherty explores if chia seeds might help with over-eating. Briony May Williams asks why producers of gluten-free products seem to be charging more for less. Matt Tebbutt explores whether raw pet food could be the key to a healthy dog. And Kate Quilton discovers some surprising science about watermelon.

Jimmy Doherty, Kate Quilton and Matt Tebbutt present some of their favourite investigations. Kate heads to Spain in pursuit of the perfect tomato and finds herself slap bang in the middle of the world's biggest food fight. Jimmy visits Italy to investigate the difference between risotto rice and long grain. Matt finds out why pork scratchings aren't made from British pigs.