In this episode of What's Really in Our Food? Gregg Wallace lifts the lid on the baffling world of food labelling and asks: "Can we really believe what it says on the tin?" Gregg exposes some of the tricks of the trade, blasts through the jargon and takes a magnifying glass to the small print to produce his ultimate guide to the supermarket aisles.

In this episode of What's Really In Our Food? Self-confessed junk food lover Gregg Wallace goes on a journey to meet the overweight kids who are learning to eat more healthily and the experts who can explain what lurks inside our burger bags and pizza boxes.

MasterChef judge Gregg Wallace meets a family who love their instant meals, talks to celebrity chefs and food experts about our passion for quick cuisine, and finds out what it's doing to the nation's cooking skills.

Gregg Wallace investigates why people are going hungry. Gregg meets a man who wants to know why his elderly father did not eat enough during his last hospital stay. He also hears from a patient who goes undercover to reveal the depressing fare he is given while recovering from an operation.

In the last part of the series, Gregg Wallace investigates the world of healthy eating and asks when is it worth paying that little bit extra for so called healthy foods. Can you always trust the supermarkets to tell you what is good for you? Are the claims about superfoods too good to be true?