In China, warrior monks ate meat, non-warrior monks followed a vegetarian diet. In Indian, the warrior caste ate meat, the priestly caste didn't. In Ancient Athens, free citizens ate meat, but the slaves and poor ate grains. In Ancient Greece, Spartan warriors ate the infamous black broth of pork and blood, the helots grains and vegetables. In Mongolia, the warriors ate meat and dairy, their conquered subjects rice and millet. In Africa, the Maasai warriors subsist on milk, blood, and meat, while women and children mostly plants. In Medieval Europe, the nobility and knights ate roast meats and game, while the peasants mostly gruel, bread, and legumes. In Samurai Japan, even the Buddhist discouraged meat, the samurai broke this rule during military campaigns. Perhaps this is why they tell you meat is bad for you...