What's for dinner? Roast beef, Yorkshire pudding, and two vegetables followed by apple pie? Or a slice of high-grade protein, some carbohydrate together with a little fat, and various vitamins with mineral salts thrown in for good measure? Whichever way you look at it a well-balanced diet is essential for the maintenance of a healthy body. In today's programme Professor W. S. Bullough talks about what food you eat and why you eat it.
