Fat is slept on macronutrient because of the misguided idea that increased fat = increased cholesterol in arteries. Vitamin K2 is an important vitamin that isn't metabolized well from foods containing K1 (vegetables). Animal sources and natto (fermented soy beans) are the best sources of it. It has been shown to help with heart disease, cancer and bone health.

The interesting thing with animal protein is that no study has shown a dose dependent increase in cancer when consuming more of it. Chronic inflammation from gluten, processed foods, pesticides, refined carbs, and refined sugars are the biggest culprits in dietary endorsed cancer.