What would happen if you only drank milk from birth to 18?

If a person only drank milk from birth to 18, they would likely suffer from severe nutritional deficiencies. While milk provides essential nutrients like calcium and protein, it lacks vital vitamins, minerals, and carbohydrates necessary for growth and development. Over time, this could lead to stunted growth, weakened immune function, and other health issues. Additionally, a limited diet could result in digestive problems and long-term health complications.