February 23rd 2017, 18:12
It's a belief that still underpins our most popular weight-loss programmes and, if truth be told, somewhere deep down you probably believe it too. It's this: the more you eat, the more weight you'll put on.
It seems logical enough, but it's not entirely true. The idea of the equality of calories was started by the sugar industry in the late 1950s, and has been endorsed and promoted by supposedly independent researchers and our health guardians ever since. The National Institutes of Health in the US states that obesity is the result of "an energy imbalance"—you're eating more than you're burning off—and the UK's National Health Service tells us that "obesity is generally caused by consuming more calories—particularly those in fatty and sugary foods—than you burn off through physical activity. The excess energy is stored by the body as fat".