Protein:
Milk is a good source of protein, which is essential for growth and repair of tissues in the body. It contains two types of proteins - casein and whey, which are considered high-quality proteins as they provide all the essential amino acids needed by the body.

Carbohydrate:
Milk contains lactose, a type of carbohydrate that provides a source of energy for the body. Lactose is a disaccharide made up of glucose and galactose, which are easily digestible by the body.

Calcium:
Milk is well-known for being a rich source of calcium, which is crucial for maintaining strong bones and teeth. Calcium also plays a vital role in muscle function, nerve transmission, and blood clotting.

Vitamin:
Milk is fortified with vitamin D, which helps the body absorb calcium and maintain healthy bones. It also contains other essential vitamins such as vitamin A, B12, and riboflavin, which are important for overall health and wellbeing.

In conclusion, milk is a nutrient-rich beverage that provides a combination of protein, carbohydrate, calcium, and essential vitamins. Including milk in your diet can help meet your daily nutritional requirements and promote overall health and well-being.