What percentage of their birth weight might newborns lose?

Newborns typically lose about 7-10% of their birth weight in the first few days after birth. This is a normal physiological process, largely due to the loss of excess fluid that has accumulated during pregnancy. After birth, as the infant adjusts to feeding and the transition to life outside the womb, this weight loss generally stabilizes, and most infants will regain their birth weight by around 10 to 14 days of age.

The percentage of 7-10% reflects an expected variance based on factors like gestational age, birth weight, and individual health conditions. It's important for healthcare providers to monitor this weight loss to ensure that it's within the normal range and that the baby is feeding adequately, as excessive weight loss could indicate feeding problems or other health concerns. Understanding this range helps caregivers maintain awareness of the newborn's health and nutrition during the early days of life.