Soy beans – one of the world's most important sources of dietary protein and polyunsaturated oil – are the source of two highly nutritious food products, tofu and soy milk. Soy milk is commonly used as a non-dairy substitute, and is a great boon to the lactose-intolerant. It contains high-quality protein but has less saturated fat than dairy milk and no cholesterol.
*Soy milk builds bones: in one study, postmenopausal women given calcium-fortified soy milk gained significantly more bone density than women given protein and calcium in the form of milk powder.
*Because it's made from a legume, soy milk – unlike dairy milk – contains some fibre.