People have been eating meat as food since the ice age. Anthropologists argue that it was then that a person refused a vegetable diet in favor of meat food. This “custom” has been conveyed by a significant part of humanity to the present day, someone has done it because of necessity (for example, Eskimos), living conditions or habits. But more often than not, the reason is a simple misunderstanding. Over the past fifty years, renowned health professionals, biochemists and nutritionists have found convincing evidence: to stay healthy, eating meat is not necessary, on the contrary, a diet that is acceptable to predators can harm a person.