It seems like there’s new a revelation in the low-carb, high-fat diet saga (whether bad or good), and the latest comes from the Annals of Internal Medicine.

The new study looked at a racially diverse group of 150 men and women who embraced the popular, yet controversial diet for a year. Split into two groups, the participants were limited either the amount of carbs or fat that they could eat.

By the end of the yearlong trial, people in the low-carbohydrate group had lost about eight pounds more on average than those in the low-fat group. They had significantly greater reductions in body fat than the low-fat group, and improvements in lean muscle mass — even though neither group changed their levels of physical activity.

While the low-fat group did lose weight, they appeared to lose more muscle than fat.

“They actually lost lean muscle mass, which is a bad thing,” Dr. Mozaffarian said. “Your balance of lean mass versus fat mass is much more important than weight. And that’s a very important finding that shows why the low-carb, high-fat group did so metabolically well.”

Check out the full post on NY Times.