Soya milk is made from whole soybeans or full fat soy flour. Soya milk contains about the same protein as cow's milk: around 3.5%. High nutrition value of protein and calcium content. Both milk are vegetarian, and protein rich.
Natural milk contain specific amount of sugar, that is called lactose, it found only in milk.
In soya milk is completely lactose - free. Soy milk contains less fat and calories, and more iron and fiber than cow's milk.