Plant Positive Strikes Back: Nutrition Past and Future Desember 28, 2012 Ancel Keys animal fat +11 blood cholesterol cardiovascular disease Denise Minger Gary Taubes heart disease low-carb Paleo Plant Positive Robert Lustig saturated fat sugar The China Study vegan vegetarian Ancel Keys animal fat blood cholesterol cardiovascular disease Denise Minger Gary Taubes heart disease low-carb Paleo Plant Positive Robert Lustig saturated fat sugar The China Study vegan vegetarian