The health benefits of milk include improved bone strength, smoother skin and a stronger immune system. It helps prevent diseases such as high blood pressure, tooth decay, dehydration, respiratory problems, obesity, osteoporosis and even some forms milk nutrition of cancer. The beneficial nutrients for health that are obtained from milk are essential for the human body and help prevent a series of chronic diseases. What is milk? Milk, simply, is the fluid that mammals create in the mammary glands to feed their young. Mammals have this because this is what they naturally assume their children consume until they are strong or old enough to look for themselves or eat what their parents usually eat.