Peter Attia

The higher their blood glucose, the greater their risk of death—even in the nondiabetic range of blood glucose.

Foods high in protein and fat (e.g., eggs, beef short ribs) have virtually no effect on blood sugar (assuming the short ribs are not coated in sweet sauce), but large amounts of lean protein (e.g., chicken breast) will elevate glucose slightly. Protein shakes, especially if low in fat, have a more pronounced effect (particularly if they contain sugar, obviously).

Protein and amino acids are the essential building blocks of life.