After all the festive over-indulgence the Food Unwrapped team are on an urgent quest to get back in shape. Jimmy Doherty, Kate Quilton and Matt Tebbutt scour the globe for the latest trends and scientific advances around weight loss. Should we believe recent headlines that eating more fat could make us thin? Kate meets an award winning NHS doctor who has achieved amazing results by putting patients on a diet low in carbs, and higher in fat than the current NHS guidelines suggest.