It is not a dangerous claim. High carb intake, and even Zone level carb intakes that allows grains are dangerous claims. I have read that when drastically changing a diet your body will suffer symptoms like constipation and acne, all which reside in time. I also think you might have been better off if you had eaten under cooked organic grass fed meats, which are high in enzymes and are more easily digested. You are at risk of parasites, which is why you have to know what your doing if you want to eat raw meat. Anyway, for advocating a lower carb diet, Mark Sisson will help save countess people from obesity, acne, diabetes, depression and other insulin related illnesses, and therefore he is a LIFE SAVER.