Supporting Breastfeeding

La Leche League Canada

Breastfeeding and Dirt

on May 26, 2014


Does your baby like to pick up rocks and lick them? Play in the sand and then stick his fingers in his mouth? Guess what – along with breastfeeding, this may be a great way to keep him healthy.

Breastfeeding and dirt. It’s not a combination you might think of as being ideal for a new baby. But Joseph Lam, a professor of microbiology at the University of Guelph, explains that many people “are almost paranoid about germs – especially parents with a new baby.” And yes, hygiene is important – Lam rates the invention of the toilet and other improvements in public hygiene (including hand-washing) as significant factors in keeping our society healthy.


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We need to remember, though, that not all bacteria are bad. In fact, many are essential to our survival. Lam explains: “There are many good bacteria commonly found on our bodies which live in symbiosis with us. They help defend us from other more harmful bacteria, they help us digest our food, and they provide essential nutrients.”

One important benefit of breastfeeding for the new baby, he points out, is that the baby at the breast picks up bacteria from the mother’s skin and in her milk. These bacteria are the desirable ones which will live in the baby’s digestive system and on his skin, helping to keep him healthy.

And if the baby does pick up some infectious germs from the dirt, the immune factors in human milk will help him fight off any illness, and other factors will stimulate his system to produce antibodies. That’s a positive step for his long-term health.


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If we take steps to kill off all the bacteria – by using anti-bacterial dishwashing liquids, hand soaps, and mouthwash, for example, or by spraying our home with anti-bacterial cleansers, Lam says “we are potentially doing more harm than good. These cleansers aren’t necessary, and they increase the risk of creating monsters – dangerous antibiotic-resistant germs.”

So babies in a super-clean environment are not only missing out on the immune-stimulating benefits of harmless bacteria, they are also at risk of not having enough good bacteria to keep them healthy.

In short, Lam’s advice is: “Keep your house reasonably clean, bath the baby regularly, keep breastfeeding – and don’t worry if he drops his toy on the floor and then sticks it in his mouth.”


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So if you’d sooner play with your baby than sterilize your kitchen, you are actually making your baby healthier. Who knew that a little dirt could be such a good thing?

by Teresa Pitman, LLLC Leader, Co-author of The Womanly Art of Breastfeeding, Sweet Sleep, and author of Preparing to Breastfeed .


If you need more information or have a breastfeeding problem or concern, you are strongly encouraged to talk directly to a La Leche League Leader.  In Canada, Leaders can be located by clicking or Internationally





4 responses to “Breastfeeding and Dirt

  1. Kelly says:

    People are obsessed with the illusion of cleanliness and sterility to a point of detriment, yet this obsession is reinforced by product marketing. I’m thrilled that Minnesota became the first US state to finally ban antibacterial soaps– proven carcinogens that don’t work as advertised anyway! Thanks for reminding parents to relax the war on germs.

  2. Michelle says:

    I loved this article. I too believe that exposure to the array of bacteria can be very beneficial, and I really liked the balance brought to the article “keep your baby reasonably clean…and don’t worry if he drops his toy on the floor and then sticks it in his mouth.” One thing that I remember reading awhile back that I would like to mention was the risk of botulism in children under one years old from eating dirt. From what I recall, is that babies have an anaerobic digestive system until around one year, which is the environment that botulism thrives. The spores are prolific in dirt, and could potentially pose a risk to young babies (similar to that of honey). Once they are past that age, I believe it is very healthy to play (and eat) in the dirt! I hope this is helpful and contributes to the dialogue. Thank you for your great article.

  3. Mark Harris says:

    Reblogged this on Birthing Awareness and commented:
    This is fab.

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