London, Dec 20: Men and women who attend Weight Watchers classes shed more weight than those who go to other slimming clubs, a new study has revealed.
According to the Journal of Public Health, Weight Watchers also offered the best value for money, the Daily Mail reported.
The study was carried out by the National Health Service (NHS) in North Somerset to determine which slimming group its GPs should refer overweight and obese patients to.
More than half of primary care trusts in England pay for patients to attend commercial organizations, but there has been a lack of information about which works best.
The researchers analysed data on 880 overweight and obese men and women who went along to one of three popular diet groups - Weight Watchers, Slimming World and Rosemary Conley Diet and Fitness Clubs.
After 12 weekly sessions, the Weight Watchers members had lost almost 12lb, on average.
This is significantly more than the 9.3lb shed by the average person attending Slimming World classes, and marginally more than the 11lb lost by those who went to Rosemary Conley's classes for three months.
Diet plans like WeightWatchers now offer mobile phone apps to help slimmers stay on track when on the move
The analysis also showed that the Weight Watchers members to be 81 percent more likely to shed 5 percent of their weight - an amount judged by experts to make an impact on health - than those who went to Slimming World.
The authors said the secret of Weight Watchers success may be that people seemed to find its course easier to complete.
Zoe Hellman, the company's head of public health, said that its classes may do a better job of motivating people, meaning they deviate less from their diet plan in between classes. (ANI)