Eating more protein while losing weight helps you lose fat instead of muscle and improves your blood sugar and cholesterol levels.

Eating more protein makes your body burn a bit more calories just to digest it, compared to eating less protein.

Eating more protein instead of low-glycemic foods helps overweight people lose more fat and keep more muscle. This finding is from the abstract summary - full study details were not available

Protein shakes make your body burn a little more calories at rest and after eating, but this doesn’t help you keep the weight off.

After losing weight, eating more protein helps you keep it off because it keeps you full, burns more calories during digestion, and helps you keep muscle instead of losing it.

Increased total daily energy expenditure from high-protein diets is mediated by elevated fat-free mass resulting from enhanced muscle protein synthesis, not by sustained diet-induced thermogenesis.