Milk is part of our food since the earliest times. It is a natural source of well-being. Rich in nutritive elements, milk has a very long history. Nomadic communities, about 12,000 years ago, after a real agricultural revolution, become sedentary societies, learned to domesticate animals and discover products such as milk. The man becomes the only mammal to consume the milk of other species. The first dairy products like yogurt or cheese are appearing 4,000 years later.