Being part of a group has been called more effective than the NHS when it comes to losing weight.

That is the verdict of one leading UK nutritionist should argues that GPs would be better of referring obese patients to group-focused weight-loss schemes instead of the national health provider.

The Medical Research Council’s Dr Susan Jebb found in a new study that sufferers who joined the popular WeightWatchers programme lost on average twice as much weight compared to those with individual GP care. Although the study was partially funded by WeightWatchers, Dr Jebb stressed that all similar group programs were likely to be just as effective. The National Obesity Forum has also said that NHS patients could benefit from group help, while the NHS is trialling pilot schemes with WeightWatchers, the recognised leading weight loss company.

Jebb and her colleagues spent over a year studying test patients referred to WeightWatchers meetings by GPs in Northampton, while also running similar projects in both Germany and Australia. The GPs referred half of their patients to the group program, leaving the remainder as a comparative group where they were generally provided with information and appointments with healthcare professionals. At the end of the 12 months, the WeightWatchers patients came out best, losing on average close to 7kg (15lbs), whereas the GP-led group lost on average3kg (6lbs).

While 3kg may not seem like a significant amount, ask anyone who has ever tried to lose weight and they will tell you that the slightest change can make all the difference, especially to diabetics or those with weight-associated illnesses. Ultimately, it appears the weekly meetings and group accountability is the better motivator.