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Reasons for Delaying Feeding Babies Solid Foods: The Open Gut

Reasons for Delaying Feeding Babies Solid Foods: The Open Gut

At what age should a parent or other caregiver introduce solid foods to a baby? According to the World Health Organization (WHO), human infants should be exclusively breastfed for the first six months of life. Complimentary food should not be introduced until after six months. Breastfeeding should then continue for two years or beyond. Parents should only begin to think about solid food for babies starting at six months of age. Feeding babies solid foods absolutely should not begin until the baby is at a minimum six months old. Because I trust the WHO recommendations, I waited to introduce my babies to solid foods until exactly six months old. Before that age, I did not give any consideration to food other than breast milk for my infants.

However, other parents with babies under the age of six months sometimes consider introducing foods like baby cereal early. These parents ask questions and make comments about feeding babies solid foods prior to six months on a number of Facebook pages and groups that I follow. Whenever I see one of these posts, I always reply that babies should not be given anything other than breast milk until at least six months. I often cite the WHO recommendations.

Baby Food SectionWhy is delaying solid foods so important?

First and most importantly, the digestive system of a baby less than six months old is immature. The mouths, tummies, and intestines of babies are simply not equipped for any food other than breast milk until approximately six months of age. If a mother choose not to breastfeed, then an infant should receive only infant formula until six months old.

Although I do not agree with all of his recommendations, Dr. Sears lists and discusses the six most important reasons for delaying the introduction of solid food for babies:

  1. Immature intestines
  2. Tongue-thrust reflex
  3. Immature swallowing mechanism
  4. Inability to sit up
  5. Inability to chew
  6. Lack of imitation

For one, almost all infants are born without teeth. Teeth are required for chewing solid foods. As Dr. Sears argues, the lack of teeth in young babies provides further evidence that “the young infant is designed to suck rather than to chew.” Both my babies were very much toothless from birth until after six months old.

In addition to a lack of teeth, young babies have a tongue-thrust reflex. The tongue-thrust reflex prompts a baby to thrust his or her tongue forward as a result of stimulation to the back of the throat. The tongue-thrust reflex protects young babies from choking. Until the tongue-thrust reflex disappears, trying to feed a baby solid foods is waging a losing battle. Introducing solid foods into the mouth will just prompt a baby to push the food forward and out with his or her tongue. Until the tongue thrust reflex disappears, babies are not ready for solid foods.

As well as lacking teeth and having the tongue-thrust reflex, young babies also lack the ability to properly swallow substances other than breast milk. Put food in his or her mouth and a baby younger than about four months old will simply push that food around and out. Parents cannot expect babies who cannot swallow properly to eat solid foods.

Of the six reasons to delay the introduction of solid foods, I find the first the most compelling. The most important reason to wait until six months is that the end of the digestive system of a young baby is just as immature as the beginning. At birth, the cells of the intestinal walls are spaced relatively far apart, which allows intact macromolecules such as antibodies, proteins, and pathogens to enter directly into the bloodstream. Basically, the intestinal lining is permeable; hence, the term “open gut.” An open gut is great for allowing the beneficial antibodies from breast milk to build up the immune system. Because breast milk contains 50+ known immune factors, babies who are exclusively breastfed for the six months of life experience fewer illnesses such as ear infections and respiratory problems. Introducing solid foods too early lessens the immunity boasting power of breast milk. Furthermore, the longer a baby exclusively breastfeeds, the greater his or her protection from illnesses as a result of the antibodies in breast milk. I want to protect my daughter as best as possible for as long as possible. To do so, I will not be giving her any foods other than my breast milk until she is at least six months old to ensure that her intestines are mature enough to digest solid food properly.

As well as lowering the immunity protection of breast milk, introducing solid foods into an immature intestinal tract also increases the risk of iron-deficiency anemia. As I explored a few days ago, something as simple as giving a baby iron supplements reduces his or her ability to absorb the iron in breast milk properly. Introducing solid foods too early similarly increases the risk of low iron levels. In fact, a study published as “Iron Status in Breast-fed Infants” in The Journal of Pediatrics discovered that none of the infants who were exclusively breastfed for seven or more months in the study developed anemia. If protecting my babies from an iron deficiency were as easy as not introducing solid foods too soon, then I by all means would continue to exclusively breastfeeding for as long as possible.

Baby Eating SpaghettiMost importantly to me, not introducing solid foods into an immature digestive system reduces the risk of a child developing food allergies. Just as antibodies cross into the blood stream from an immature gut, so too do proteins from foods. Early exposure to food proteins via the open gut increases the incidence of food allergies in children while delaying the introduction of solid foods correlates to a decreased risk. Because of my history of food allergies, I wanted to do everything in my power to prevent my children from also having allergies. I expose my babies to germs to build their immunity by not sterilizing their environment. (Clean and sterile are completely different.) I also breastfeed for as long as possible including exclusively breastfeeding as long as possible.

Finally, delaying the introduction of solid foods decreases the risk of future obesity. With a decreased risk of obesity also comes a decreased risk of weight-related health problems such as diabetes and heart disease. Exclusively breastfeeding for the first six months of life, subsequently waiting to introduce solid foods, was the best way for me to protect the future health of my children.

To recap, the most important reasons for delaying the introduction of solid foods include:

  • Lack of teeth
  • Tongue-thrust reflex
  • Immature swallowing mechanisms
  • Immature intestines
  • Increased immune protection
  • Decreased risk of anemia
  • Decreased risk of food allergies
  • Decreased risk of obesity

Exclusively breastfeeding for a minimum of six months offers so many benefits to babies. Based on my research on feeding babies solid foods, I decided not to give my babies anything other than breast milk until six months of age. Unless an infant stops thriving, there is absolutely no reason for solid food for babies. The reasons for delaying feeding babies solid foods are just too compelling. Continue to protect your baby by delaying the introduction of solid foods.


6 Reasons Why You Should Wait to Introduce Solid Foods to Your Baby:
Exclusive Breastfeeding:
Pisacane, Alfredo, Basilio De Vizia, Adriana Valiante, Filomena Vaccaro, Maria Russo, Giacomo Grillo & Arturo Giustardi. 1995. Iron status in breast-fed infants. The Journal of Pediatrics 127(3): 429-31.
Solids: Wait a Bit:
Starting Solids: Waiting Is Worth It:
Why Delay Solids?:

Image Credits

Reasons for Delaying Feeding Babies Solid Foods: The Open Gut © 2016 The Parenting Patch
Baby Food Section:
Baby Eating Spaghetti:

  • Jane Macy-Painter

    This is so important, thanks for the breakdown

  • Penelope Paulette

    Thank you so much for reinforcing these recommendations! My LO is 3 months and the caregiver is already pressuring me to add cereal/grain to his bottles. MY plan was to exclusively BF until 6 months, but as a first-time mom it’s hard to say no to a mom who has 5 kids of her own!

  • Laura Bowman

    Perfect timing!! My littlest just turned 6 months this week 🙂 I fed her something other than breastmilk maybe 4 times before then just to see if it would help her sleep a little better. I didn’t notice any real difference but fed her cereal last night! She has loved all things from a spoon so far!

  • Motherly Adventures

    I introduced cereals to my lo at 4 months, when she was able to hold up her neck. It went really well and she loves to eat! She did the gagging reflex maybe twice but that’s it. She’s a great eater and I still bf multiple times per day. I have no regrets!

  • Dandi D

    My baby girl just turned 6 months and she has been EBF so far. I don’t plan on starting solids anytime soon as she is happy and healthy right now with just breast milk. She is in the 99 percentile for height and weight, so I think she’ll be fine without solids for a while!

  • Jennifer

    This was a very interesting read. I had no idea that babies had open guts. Thanks for sharing this!

  • Christina Sylvester Skinner

    I’m so happy to see this being talked about! I delayed solids with all of my kids. My oldest had solids at 7 months, my 2nd had it at 12 months, and my third at about 11 months. They were all big healthy babies too.

  • Edna Williams

    This is perfect! Thanks for sharing!

  • Elizabeth May Johnson

    I am so thankful for this post blog. Thank you. My babys pedi said she can start rice cereal at 4m now that she is 4months. And he said 4.5 month we can give her Orange and yellow veggies. I thought t was 6 month and now i know it is. Thank you for saving my daughter!!!

  • Katie Starshine Hall

    I’m so glad I read this post. About to have my first and have so many questions about when to introduce solids. This really helps =]]

  • Good post and thanks for sharing the information. Will pass along to my son for my new grandbaby.

  • Emily

    Great post. I breastfed until six months then slowly introduced solids. At almost 11 months she is eating a lot more solids, but I still don’t overdo or overthink it and still breastfeed quite a bit.

  • Elishia Cowell

    I definitely agree with this! We waited until 6 months to start foods, although our family doctor still gives the ok at 4 months.

  • mail4rosey

    I always hated when people tried to feed my child before I knew he/she was ready (it happened with all four of them). It’s really hard when it’s grandma or grandpa doing it. -_-

  • Amber Ludwig

    I absolutely agree with waiting until at least 6 months!! I also think that skipping baby cereal is super beneficial!! There are really no huge points to have it so why??

  • Valerie Coll

    Great tips, I will definitely be fowarding this post to all of my friends who are first-time moms!

  • slehan

    Good information. Never had kids so topic didn’t come up for me.
    slehan at juno dot com

  • valmg

    I feel all women have the right to breast and/or bottlefeed as they wish without being judged by others. The pediatrician suggested that my Mom place a small amount of cereal in the formula since I was a hungry baby. Later when I had children they suggested the same for my oldest.

  • Alicia C

    Our pediatrician recommended cereal at 4 months. Will have to do more research on this topic before making my final opinion.

  • Barrie

    Despite being told 4 months by the pediatrician, I waited for solids till 6 months. She tolerated really well!

  • PennyPincherJenny

    I remember trying to look up advice for when to start feeding solids. Each of my kids were different as to when they were ready for solid foods.

  • Jo-Ann Brightman

    I find this advice to be very interesting and wish I had had it when my kids were young.

  • Taryn Burt

    I find this encouraging. I am about to have my second child, and plan on doing things a little differently than with my first. Thank you for the wonderful information!

  • Kristi Nelson Renner

    We waited until 6 months for our kids. One did really well but the other… all food had to be cold, made things a bit more work as I would cook it or warm it up and then cool it off. We laugh about it now.

  • Amy c

    My little girly just turned six months and is starting to sit up really well. I guess it’s time!

  • Brianna

    We waited to do feeding till about 6 or 7 months with our boys. When they sat up themselves is when we began with some solid foods.

  • jamie Davis

    When my daughter was about 4 months old her pedi said she was showing signs of being ready for solids. I stupidly followed his advice. He pushed the baby cereals but I didn’t give her those. I made her food from real food like steamed carrots, avocado and squash. I do wish I had waited though. I’m definitely waiting with my next little one.

  • I practiced baby led weaning and eating for the last 2 children I had. It worked well.

  • Lauryn R

    I always let my kids decide for themselves. If they were curious and interested around 6 months, then I let them try solids. All of mine had no issues with it.

  • kayladiana

    I am glad you wrote about this. Far too many people are feeding their babies solids before 6 months. And unfortunately, outdated doctors are still suggesting it.

  • Jessica Czapla

    I wish more people knew about this! Just because babies watch you eat and want to grab your food doesn’t mean they’re ready! The other day I was wondering if the people who feed babies too soon are the ones who have overweight pets because they can’t resist those begging faces.

  • samantha Lynn

    an important article

  • Andrea Denise Jackson

    Thanks for bringing forth an extremely important issue. Baby ‘s food is a health issue and unfortunately being overlooked to include our own doctors even today!

  • Sandra Caballero

    I agree ! I nurse my baby girl and didn’t introduce to solid until 7/8 months old. When she showed interest in solid food. Early feeding does cause problems in those little intestines. I hope more parents decide to wait on solid. It’s okay if child doesn’t find interest in solid food until 12 months. As long they are being nursed or formula fed.

    • Yes! My son was not really interested in food until he was a little over one. He would take a bite or two but preferred to nurse.

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