Yo-Yo Dieting 'Could Benefit Health', Says Expert

For years, we’ve been told to avoid yo-yo dieting. But now, an expert has said that it could actually benefit health. 
US biostatistician Dr David Allison found that repeated crash diets did no harm to obese mice. In fact, serial dieting animals lived longer than those that remained obese.
He has since questioned the widely held view that yo-yo dieting is harmful and should be avoided, likening the whole process to going to the dentist. Dr Allison, from the University of Al