Now if we stop talking about mice and start talking about people we can look at what the science has always shown. There are things called diseases of modern culture. As in indigenous people who don't eat like western cultures have low cancer and mental illness rates and no heart attacks.
Except that science has never shown that. Atherosclerosis has been found in mummies (not just from Egypt but also Peru, the southwest America, and the Aleutian Islands), and the idea that modern Inuit have low rates of heart disease was never evidence-based
Fats and proteins don't spike the blood sugar.
But protein does spike insulin.
What science actually shows is what it's always shown: a diet based around whole plant foods, high in fiber and moderate to low in fat and protein, is the most healthful for primates, including those weird bald ones.