We are told obesity is on the rise - globally. But if you think about it, how often do you see an obese chief executive, or tech entrepreneur, or politician even? Especially a female one. Perhaps the reason is because society discriminates against fat people.

In this Why Factor we explore why it is OK to be anti-fat, where that attitude comes from, and what it feels like to be on the receiving end of society’s prejudice.

Producer: Gemma Newby

(Photo: A woman and a man sit together. Credit: Getty Images)