Low-carb dieting may be on the wane in the US, with fruit and vegetables taking over.

According to a new survey commissioned by the American Institute for Cancer Research, four in five weight-conscious Americans are relying on the old-fashioned diet strategy of eating more fruit and vegetables.

In the study, 65 per cent of respondents said they had tried to lose weight. Of those, 81 per cent said they had increased produce in their diet, 76 per cent had decreased the amount of fat they consumed, 60 per cent had decreased carbohydrates and 38 per cent had increased the amount of meat, eggs and other proteins they ate.

The AICR has updated its New American Plate brochure, calling for Americans to gradually change the way they eat so that two-thirds or more of their plate contains vegetables, fruit, whole grains or beans and one-third or less contains meat or dairy products.