Obesity (E16)

Documentary which looks at the latest scientific research on obesity. A combination of fast food culture and genes have led to our expanding waistlines, but Chris Bavin reveals how small changes can help us all maximize our chances of keeping trim. The programme shows how a simple piece of string can tell you how healthy you are, when the best time to eat is, and how our gut bacteria may keep us skinny. Plus we meet cutting-edge researchers who hope to solve obesity with a simple injection. (BBC)