A newborn infant typically requires an intake of approximately 2.2 grams of protein per kilogram of body weight each day. This dietary protein supports rapid growth and development, including the formation of new tissues, organs, and a robust immune system. Breast milk and infant formula are formulated to provide this crucial nutrient in readily digestible forms. For example, a baby weighing 3.5 kilograms would need around 7.7 grams of protein daily.
Adequate protein intake during infancy is essential for establishing a healthy foundation for future growth and well-being. It plays a vital role in cell replication, enzyme production, and hormone regulation, all of which are critical during this period of rapid development. Historically, understanding the precise protein requirements of newborns has been a key focus of nutritional research, leading to improvements in infant feeding practices and the development of specialized formulas to support optimal growth, particularly for premature or low-birthweight infants.
