" Several studies have now shown, in both experimental animals and in humans, that consuming animal-based protein increases blood cholesterol levels.18–21 Saturated fat and dietary cholesterol also associate with blood cholesterol, although these nutrients are not as effective as animal protein.18–21 In contrast, plant-based foods contain no cholesterol and, in varied ways, help to decrease the amount of cholesterol made by the body. "

― T. Colin Campbell , The China Study: The Most Comprehensive Study of Nutrition Ever Conducted and the Startling Implications for Diet, Weight Loss, and Long-term Health