"Fat people just need more self-control." "It's about personal responsibility." "It's simple, just eat less."
These were some of the 1,946 comments, posted by readers, beneath an article I wrote last year about weight-loss injections.
The idea that obesity is simply a matter of willpower is held by a great many people - including some medical professionals.
Eight out of 10 people said obesity could be entirely prevented by lifestyle choices alone, according to a study of people in the UK, Australia, New Zealand and the US, which was published in medical journal The Lancet.
But Bini Suresh, a dietitian, who has spent 20 years working with obese and overweight patients, is exasperated by the idea.
