Libby Weaver is the health expert Hugh Jackman called 'a one stop shop’ for wellbeing. In a new book, she explains the underlying factors that thwart dieters’ best-laid plans...

When Libby Weaver was studying dietetics and later biochemistry at the University of Sydney in Australia it was the late 90s and the prevailing wisdom on weight gain and loss was calories in, calories out. But when she started practicing, she found clients who were running marathons or calorie counting obsessively would be gaining rather than losing weight. Thirteen years, ten nutrition books and hundreds of clients later, she is convinced there are lesser known but powerful reasons people can’t lose weight.

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