The ketogenic diet has long been used to help treat drug-resistant epilepsy in children. Today, it is widely promoted for weight loss, blood sugar control, and athletic performance — but what does the research actually say?

This article explores what the research actually says about the ketogenic diet and body composition. While keto diets may lead to rapid short-term weight loss, studies suggest that much of the early weight loss may come from water and lean body mass rather than body fat alone. The article also compares ketogenic diets with low-fat, plant-based diets, highlighting differences in fat loss, metabolic health markers, and long-term sustainability. Overall, it emphasizes looking be