The meta-analysis published in the British Journal of Nutrition reports numerous studies showing a better management of body weight, with reduction of cardiovascular risk factors, in individuals with a low carbohydrate diet (less than 50 g/d) compared to individuals assigned to a conventional  low-fat diet (less than 30% fat energy).

Individuals assigned to a ketogenic diet showed decreased body weight and diastolic blood pressure, while increased HDL-C. They achieved a greater weight loss than those assigned to a low fat diet in the long term; ketogenic approach may be an alternative tool against obesity.

Bueno, Nassib Bezerra, et al. “Very-low-carbohydrate ketogenic diet v. low-fat diet for long-term weight loss: a meta-analysis of randomised controlled trials.” British Journal of Nutrition 110.7 (2013): 1178-1187.