Gregg and Chris have a challenge on their hands with the Rielly family from Middlesex whose plentiful problems lead them to explore carbohydrates - should we be trying to cut them out of our diet or not? Chris investigates the baffling difference in price between cheap table salt and high-end sea salt to find out if it's ever worth paying more. The Riellys are a busy family with very different eating habits. Dad Adam lives on takeaways whilst mum Stacy cooks three different dinners every night because she and the kids don't like the same foods. 12-year-old Izzy is so fussy she survives on tomato soup and pasta, whilst eight-year-old Harry has type 1 diabetes, so Mum has to count the carbohydrates in everything he eats - not easy when Harry snacks up to eight times a day and is always hungry.