Breastfeeding: How much weight loss is normal for newborn?

My seven-week-old breast-fed baby is down a pound from her birth weight of 7lbs. 5oz. Is this normal?


Debbi Donovan

Debbi Donovan is a Board Certified Lactation Consultant, as well as a retired La Leche League Leader. For more than a decade, Debbi... Read more

Most newborns lose between 5 and 10 percent of their birth weight. A weight loss of up to 10 percent is considered within the normal range.

Breastfed infants usually regain birth weight by their second or third week of life, and then gain an average of four to eight ounces each week during the first six months.

Since your baby is not fitting this pattern it is important for her to be promptly evaluated by her healthcare provider to rule out any underlying medical conditions.

Most likely,supplementation will be required since your baby has lost almost 14 percent of her birth weight and has yet to gain it back.

In addition to physician assessment, a Lactation Consultant should complete a thorough history on both you and baby, along with evaluation of a breastfeeding session.

In almost all cases, breastfeeding can continue, enhanced by expressed breastmilk or formula.

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