Newborn Weight Loss During Breastfeeding

Sometimes breast-fed babies lose weight. Although this can be scary, it often is normal and almost always treatable.

Normal Weight Loss

According to the American Academy of Pediatrics (AAP), during the first week after birth, it is normal for a breastfed baby to lose 7 percent to 10 percent of his birth weight. He should gain the weight back by the seventh or 10th day after birth (or, for a premature baby, by the end of the second week). A breast-fed baby should not lose any weight after the first week. If this occurs, consult your pediatrician.

Causes of Normal Weight Loss

The AAP notes that most of your baby's lost weight simply is excess fluid. Additionally, your milk production is not yet established during the first few days after birth, and the baby only consumes about 1 tbsp. of colostrum, or your early milk, at each feeding. After your milk comes in, weight gain should begin.

Signs of Abnormal Weight Loss

After the first week, if a baby won't eat for longer than 10 minutes, or if she produces fewer than four wet diapers a day, then she probably isn't drinking enough milk and may be losing weight. Yellow skin also is a possible sign of weight loss. Furthermore, if the mother's breasts are not full at each feeding, the baby may not be consuming a sufficient amount.

Causes of Abnormal Weight Loss

Your baby might be a sleepy or inefficient nurser, or you might be switching him from the first to the second breast too quickly. A baby must feed at one breast for a while in order to reach the hind milk, which contains more fat and calories. Your milk supply also may be insufficient.

Treatments for a Sleepy or Inefficient Nurser

Don't let your baby suckle on a pacifier. At each meal, check her latch and positioning to make sure they are correct. To keep her awake and alert, rub or pat her tummy, feet or cheeks; caress her with a wet washcloth; burp her several times throughout every meal; change her diaper; talk to her encouragingly while she eats. Compress your breast to help the milk flow.

Treatments for Inadequate Milk Production

Breastfeed frequently, including at night. Let your baby feed for as long as he wants before you switch breasts. Use a breast pump after each meal to ensure that each breast is drained (this will stimulate milk production). You also should increase your fluid intake, avoid caffeine and get plenty of rest. If necessary, supplement with formula and/or talk to a lactation consultant.