Hi Dr. C.,
Should I be concerned about the amount of weight my one-week old infant has lost? How fast will she start to gain it back?
It is normal for newborns to lose 7 to 10 percent of their weight after birth due to the extra fluid they are born with. Typically, this weight is regained within the first 2 weeks after birth. To track your baby’s weight gain, keep these questions in mind:
How often is your baby feeding? Newborns typically feed every two to four hours.
How much is your baby eating at each feeding? Breastfed babies may nurse for 10 to 30 minutes at a time. You should hear them swallow and they should seem satisfied when they are done. Formula-fed babies may start out drinking one ounce at each feeding and quickly increase to three to four ounces.
How many diapers are your changing? After the first few days after birth, you should expect to change six to eight diapers each day. Newborns should also have one to three bowel movements daily, depending on if they are breastfed or formula-fed.
If you are worried that your baby isn’t gaining enough weight, talk with his or her pediatrician immediately.
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