Why Are Thin People Not Fat?June 24, 2015

It is estimated that there are now more people on the planet at risk from obesity-related diseases than there are suffering from starvation. Western society in the 21st century is eating itself into an early grave but, while the ranks of the overweight and obese are swelling, there is a significant proportion of the population who are apparently immune to this phenomenon. Horizon sets out to discover what is keeping these people thin. Are some people really able to consume as much as they like without becoming obese? If so, how do they do it? Ten volunteers have agreed to eat double their normal intake of calories over four weeks to see how their bodies cope with a month-long chocolate, cake and fast-food frenzy.

Why Are Thin People Not Fat? was broadcast on SBS ONE at Wednesday 24 June 2015, 20:00.