Lingonberries 'halt the effects of high-fat diet'

The researchers, at Lund University, discovered the berries almost completely prevent weight gain in mice fed a high-fat diet.
They discovered the Scandinavian berries – which are sometimes known as cowberries in the UK - also lower blood sugar levels and cholesterol. However, their results also showed the ‘super berry’ acai can lead to weight gain.
The research team conducted their study using a type of mouse that easily stores fat and, therefore, can be regarded as a model for humans who are overweight and at risk of diabetes.  Some of the mice were fed a low-fat diet, while the majority of the animals were fed a diet high in fat. 
They were then divided into groups, where all except a control group were fed a type of berry – lingonberry, bilberry, raspberry, crowberry, blackberry, prune, blackcurrant or acai berry.

Source  - Daily Mail