Newborns require a range of essential nutrients for proper growth and development. These include proteins, fats, carbohydrates, vitamins, and minerals. Breast milk is considered the optimal source of these nutrients. It contains the right balance of fats, proteins, and carbohydrates to support a newborn's rapid growth. Additionally, breast milk provides vital micronutrients such as iron, calcium, and vitamin D, which are crucial for bone development and preventing conditions like rickets.