A Low-Carbohydrate, Ketogenic Diet versus a Low-Fat Diet To Treat Obesity and Hyperlipidemia: A Randomized, Controlled Trial

Compared with a low-fat diet, a low-carbohydrate diet program had better participant retention and greater weight loss. During active weight loss, serum triglyceride levels decreased more and high-density lipoprotein cholesterol level increased more with the low-carbohydrate diet than with the low-fat diet.

References:

Yancy (2004). "A Low-Carbohydrate, Ketogenic Diet for Type 2 Diabetes Mellitus." Journal of General Internal Medicine 19(1S): 110.