Another study compared a low-carb diet to the Diabetes UK's dietary guidelines. It found the low-carb group lost 15.2 lbs (6.9 kg), while the low-fat group lost only 4.6 lbs (2.1 kg). Over 3 months, the low-carb diet caused 3 times more weight loss. However, there are contrasting theories for these findings. Some researchers argue the results are simply due to a higher protein intake, and others think there is a distinct "metabolic advantage" to ketogenic diets. Other ketogenic diet studies have found that people can lose fat when food intake is not controlled or restricted. This is extremely important when applying the research to a real-life setting.