Will extra protein help lower your blood sugar if you have diabetes?

Does a higher-protein diet help people with type 2 diabetes?

Scientists randomly assigned 106 adults with type 2 diabetes and excess weight to follow a weight-loss diet with either 40 percent or 21 percent of calories from protein. Those on the high-protein diet were told to eat at least four weekly servings of lean beef. (The beef industry partly funded the study.)

After a year, weight, hemoglobin A1c (a long-term measure of blood sugar), insulin resistance, blood pressure, and triglycerides fell equally in both groups. And there was no difference in muscle loss between groups.