Babies and Constipation

Dr. Greene, my 7-week-old son hasn’t pooped in three days. All he gets is breast milk. Is this normal? Is he constipated? I’ve heard both. If he is constipated, what should I do? Sometimes he acts like he’s about to poop, his face gets red and he strains, but nothing comes out. Otherwise he’s fine — including his nursing. Thanks in advance.

Babies and Constipation

Dr. Greene’s Answer:

As long as your son is in diapers, every single poop will be right there for you to see when the diaper is changed. During these years, the stools undergo several changes. The first poops are the thick, sticky, tarry meconium stools that consist partly of old skin cells that are shed and then swallowed while the baby is still inside you. During the first week these give way, in breast-fed babies, to soft, yellow, breast-milk stools. These usually look like yellow mustard with little seeds. By the time a baby is one week old, he has an average of 8 to 10 of these pleasant (as stools go) stools each day.

You can imagine that if these were 8 to 10 stinky stools, or if even the pleasant (as stools go) stools kept up at this pace, changing diapers would get real old real fast.

For most breast-fed babies, the number drops to about 4 per day by 4 weeks old (although many kids have a different pattern). Formula-fed babies usually stool less often at this age, and the stools do not change much with time until solid foods are introduced (because unlike breast milk, formula doesn’t change over time). Formula-fed stools are often tan or yellow at this stage, and a little firmer than breast-milk stools. For any baby, tan, yellow, green, or brown stools can all be normal. By 8 weeks old, the average drops to 1 per day. Most formula-fed babies will not go less often than daily, but many breast-fed kids will poop even less often than this. I know many babies who only go every three days. If a happy formula-fed baby goes 4 days, or a breast-fed baby goes 7 days without a stool, I recommend that he or she be checked once by a pediatrician. If the child seems to be in pain, has vomiting, or has blood in the stool, he should be seen by the pediatrician immediately. Otherwise, it can be completely normal to go only once every eight days — as long as the stool is soft when it comes out. Breast milk is an amazing food that leaves very little in the way of waste.

Babies will strain from time to time to move the stool along through the intestines. If you want to do something when babies grunt, push, or strain, try picking them up to get gravity to help them in their efforts, or try holding the knees against the chest to help them “squat” — the natural poop position. Straining is usually normal. Crying while straining may be a sign of constipation.

When a child is constipated, the stool in the intestines has backed up more than it should. What “more than it should” means varies depending on the age of the child and the diet. The longer stool sits in the colon, the more water is absorbed back into the body. When a child is constipated the stool tends to be hard, and passing it tends to be painful.

Stool that is hard (firmer than peanut butter) or foul smelling (you’ll know) in a child who has not yet had solid foods may represent something as simple as needing more to drink (especially during hot weather), but it may also be the sign of a disease. Contact your pediatrician to discuss the situation. If the baby is otherwise healthy, one teaspoon of light *Karo syrup in 4 ounces of water will often get things back on track. Also, contact your pediatrician if the baby is less than a month old and hasn’t gone for 4 days. When kids begin to take baby food, the stools change once again. They may be either softer or firmer, but they will likely smell worse (kids also smile and laugh more at this age, more than making up for the unpleasantness). Most children’s intestines are very responsive to the foods they eat.

Bananas, rice cereal and applesauce all tend to produce firmer stools. Carrots and squash are constipating for some babies. Pears, peaches, plums, apricots, peas and prunes make stools softer. By balancing the diet, you can often keep the stools comfortably mid-range. If the stools are still too firm, juice is the gentlest medicine to soften them up. Two ounces of apple juice twice a day is a good bet. If this doesn’t work, prune juice is even better. Also, when your son is straining you might want to put him in a tub of warm water. This will relax his muscles and make the stool easier to pass.

Glycerin suppositories can be very helpful if diet and juice don’t work, but constipation that is stubborn enough to make these optimal should be discussed with your pediatrician. The same holds true for baby laxatives (hint: if your pediatrician does recommend a laxative, unprocessed bran, 1/2 teaspoon mixed with food twice a day is much cheaper than Maltsupex, and about as effective).

For most breast-fed babies, a 3-day break from dirty diapers is a reason to celebrate, not a cause for alarm. It’s nature’s reminder that breast milk is the perfect food for babies — or more broadly, that giving of yourself is a perfect gift for your child. This normal poop-pause is also a little foretaste of what life will be like when there are no more dirty diapers!

*Note: Children under age 1 should not eat honey because of the risk of infant botulism. Today, corn syrups are manufactured under sanitary conditions to prevent this, but the manufacturers do not make any guarantees. Of course, neither can I. The 2009 AAP Report of the Committee on Infectious Diseases states, “Manufacturers of light and dark corn syrups cannot ensure that any given product will be free of botulism spores, but no case of infant botulism has proved to be attributable to consumption of contaminated corn syrup.”

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Dr. Alan Greene

Dr. Greene is the founder of (cited by the AMA as “the pioneer physician Web site”), a practicing pediatrician, father of four, & author of Raising Baby Green & Feeding Baby Green. He appears frequently in the media including such venues as the The New York Times, the TODAY Show, Good Morning America, & the Dr. Oz Show.

  1. Eli

    My baby is four weeks old and her stools are soft and yellow. She has been straining and grunting all the time she is awake. Sometimes the straining and grunting wakes her up and she feels uncomfortable, she begins crying and wants to be held in my arms. I am worried about this issue. Any ideas what this should be and how long will this last. She has begun this from week 2.

  2. halima

    my son is 14 months old formula and breast milk fed. he is always constipated yet i give all soft foods foreaxample yorghut,yellow bananas grapes at times even forced to give blue band(margarine) and alots of juices and water cos he like drinking and eating so every thing i give he eats with love but he ends up being constipated. wat should i do because im worried

  3. busani

    my daughter is 1 month old and she is constipated,i dont know what to do to ease up her constipation

  4. cathryn

    my son is 14 days old, formula and breast milk fed. He hasn’t pooped in three almost four days :( he pushes like he needs to go however, nothing comes. He smells when he passes gas and he’s clearly uncomfortable. I’ve tried adding 1/2 tsp of brown sugar to his food, twice and still nothing.. what should I do? do i need to be worried?


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