The questions I'd ask, and the research the OP would probably want to do, are along these lines:
Is chronic,avoidable disease among otherwise healthy people due to the lack of nutrition (not eating liver and greens, saturated fats, etc.)?
Is chronic avoidable disease among otherwise healthy people due to the presence of toxic, rancid seed oils, petroleum residues, round-up ready monocrops, and other inflammatory refined dusts and strange amalgams of sodiums and metals?
How much genetic potential do I have for heart disease or other trouble in my family, that I should consider when formulating my eating plan?
After seeing the data, my opinion rests on both the elimination of toxic food and the abundance of nutrient-dense foods. But if I had to pick one over the other, I'd rather NOT eat the pizza, and get whatever else I can. I believe I would live longer and healthier on nothing but whole chickens and spinach than I would if frankenfood had a regular place in my diet.
Steak, eggs, potatoes - fruits, nuts, berries and forage. Coconut milk and potent herbs and spices. Tea instead of coffee now and teeny amounts of kelp daily. Let's see how this does! Not really had dairy much, and gut seems better for it.