There are vegetarians who assert that they can get by quite well without dairy products. True, this is perhaps possible in the lowlands where practically all the land can be used for farming and vegetable growing. A typical example of turning pasture land into arable land is provided by China, where the huge increase in population required the conversion of much of their pasture land to allow the cultivation of more grains and vegetables, which yield more protein, minerals and vitamins. The Chinese example, however, would be impossible to apply to mountainous regions where fruits and vegetables will not grow. With very few exceptions, dairy farming is usually the only activity that can be successfully undertaken for the production of food. In my own country, Switzerland, the best milk comes from the mountainous regions and is instrumental in stabilising the national economy through the production of various kinds of cheese and other dairy products.
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