In a recent study, Australian researches fed trained cyclists a low-carbohydrate diet for 5 out of 6 days. On another occasion, the cyclists followed a high-carbohydrate diet for all 6 days.

When the cyclists exercised on day 7, the scientists found they burned 45 percent more fat after their low-carbohydrate week of eating. Also, in 2003, review of 13 studies which compared low-carbohydrate and low-fat diets reported that low-carb eating was superior to the low fat approach in reducing heart-disease risk factors.

Products such as Atkins and BioSlim, focus on educating their customers on importance of low-carb diets.