A low-glycaemic index diet may not be any help for obese people trying to lose weight, contrary to growing popular belief, suggests a new study out of the US.

Researchers from the University of Minnesota tested whether reducing the glycaemic index of a diet already low in calories would have any further benefit for a group of obese adults.

But although the new trial confirmed the benefit of lowering glycaemic index on insulin sensitivity, it did not impact the subjects' weight, they write in this month's issue of the Journal of Nutrition (135:2387-91).

Find out about the impact of a low glycemic diet on weight loss at http://www.nutraingredients.com/news/ng.asp?n=63484-glycaemic-index-weight-loss.