2.6 million years ago, the first major evolutionary change in the human diet happened. The arrived of meat in our daily intake of food had many consequences for the evolution of our species. First, humans were eating meat to survive when other resources were not easily available (example, in the winter). Meat was providing them a good source of energy. Time passed and meat became the major part of our plate, making the vegetables and others the "side-dishes". Meat became a symbol of wealth, where eating flesh of animal was considered as a privilege that not everyone could afford.