Also an interesting note on vegans: "One surprising finding, Dr. Hazen said, was how a long-term diet that includes meat affected the amount of TMAO-producing

Also an interesting note on vegans: "One surprising finding, Dr. Hazen said, was how a long-term diet that includes meat affected the amount of TMAO-producing bacteria in the gut and thus magnified the risk. In the study, when longtime meat-eaters consumed an eight-ounce steak and a carnitine supplement, their bacteria and TMAO levels rose considerably. But when a vegan ate the same combination, he showed no increase in TMAO or bacterial change. 'Vegans basically lose their ability to digest carnitine,' said Dr. Hazen."