Rising obesity is causing life expectancy to fall for the first time in centuries, costing the NHS £3. billion a year. So why we are fatter as a nation than we have ever been before? Is obesity a choice or an illness? And why is childhood obesity at epidemic levels? Fat: Eating ourselves to death?

Looks at the complex recipe of modern life that leads to obesity and our options for reversing this trend, from individual to national action. Pocket Issue slims down the issue to give you some answers.