大象传媒

Research out today suggests by the age of 45 women have tried an average of 61 diets in a bid to get and stay slim.

The results come from a poll of thousands of men and women in Britain, with three quarters saying they had started a diet in the last year.

A programme on 大象传媒 Two tonight suggests a reason why diets don't work for some. Horizon shows how scientists have identified a mutation in a particular gene can lead to obesity.

Mouse experiments suggested the body's message to "stop eating" was blocked if the animals had the mutation.