RCT: A brief 5:2 diet advice resulted in similar weight loss at one year vs. a standard multicomponent weight-management advice (-2.6kg vs. -1.9kg, p = 0.37).

A randomised controlled trial of the 5:2 diet – PLOS One

News Release: Brief 5:2 diet advice is as effective as traditional GP advice, but people like it better, according to new study – Queen Mary University of London

Commentary: Fasting 2 days a week can help obese people keep off the weight with modest results, study finds – CNN