What to Watch For
It’s important to note that babies’ poop schedules can swing on both sides of the spectrum. Some exclusively breastfed babies poop after every meal; others have been known to hold out for a week or longer, Dr. Shu says.
“Consistency is key to defining constipation in breastfed babies. Rather than liquidy, seedy, pasty stools, the constipated baby’s stool will be more like little clay balls,” says Jane Morton, M.D., a clinical professor of pediatrics at Stanford University School of Medicine, “though it is extremely rare for an exclusively breastfed baby to be constipated.”
Formula-fed babies can be all over the map, too. And when solid foods enter the picture, parents should be prepared for the frequency, form, and color to change again. But as a frame of reference, babies 0 to 4 months of age poop on average three to four times a day, and after the introduction of solid foods, that reduces to approximately one bowel movement per day.
Parents often suspect constipation when there is a prolonged absence of poop. This can definitely be a sign of constipation. If a baby is not having at least several bright, yellow (not dark brown or green) poops on Day 5 of life, something could be wrong, regardless of whether he’s on breast milk or formula, Dr. Morton says. This usually has to do with the baby not getting enough to eat.
But frequency is not the only clue. It could be constipation if your baby’s poop is hard or difficult to pass. Harder poops can stretch the anal walls a bit, which causes bleeding and a small streak of bright-red blood in the stool.
What Causes Constipation
Although it’s rare for a baby on an all-liquid diet to experience constipation, it can happen. Exclusively formula-fed babies are much more likely to have trouble from constipation, Dr. Morton says. Formula can firm up poop much more than breast milk can, Dr. Shu adds. If your baby has a milk-protein allergy or intolerance, she could end up constipated. A milk-based formula could cause this, as well as the dairy in mom’s diet that’s passed through the breast milk. This also carries over to any other kinds of dairy an older baby could consume, such as yogurt and cheese.
When a baby is around 6 months, pediatricians often give parents the green light to offer an array of baby food. What your baby eats will largely determine the kind of poop you can expect, Dr. Shu says. And many different foods could contribute to constipation. Start by considering your ABCs—applesauce, bananas, and cereal, Dr. Morton says. Too much of any of these, especially rice cereal, can get you into trouble. When you start introducing table foods, it might be even harder to pinpoint the constipation culprit.
How to Treat It
A change in formula or in Mom’s diet could help combat constipation in formula and breastfed babies, respectively. Solid foods, which are often the cause of constipation, can also be the cure, Dr. Shu says. Several kinds of fruits and veggies, such as pears and broccoli, can get things back on track, along with fruit juice and water.
When a change in diet isn’t doing the trick, talk to your pediatrician before employing other methods. The doctor might suggest rectal stimulation with the use of a cotton swab or rectal thermometer. This usually produces a bowel movement within several minutes of stimulation, Dr. Shu says. Another possible is a glycerin suppository. If it works, it could take about an hour to produce a poop, Dr. Shu says.