Britain's Favourite Foods - Are They Good for You?

Last year Brits spent over $84 billion on food, including three billion liters of milk, 730 million kilos of bananas and 1.34 billion kilos of potatoes. But what do we actually know about these foods? And which ones help people feel and look better? Professor Alice Roberts travels across the UK to track down the latest scientific information, revealing the definitive guide to the foods Brits love.