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Ask an Expert: Is doing a smoothie cleanse safe while breastfeeding?

by Wendy Wisner, IBCLC

Fan Question:

“Can you do the 10 Day Green Smoothie Cleanse while breastfeeding?  Thanks in advance!”

Generally, breastfeeding moms can eat whatever they wish and in whatever amounts they please and still produce plenty of healthy milk for their babies.

Unfortunately, such an extreme diet as this is not recommended for breastfeeding mothers.  There are a few reasons for this.  First, this diet – which consists of mostly fruits and vegetables, and very little else – is almost certain to be too calorically restrictive for a breastfeeding mother.  It is not recommended that a nursing mother consume fewer than 1500-1700 calories per day (http://kellymom.com/nutrition/mothers-diet/mom-calories-fluids/). And most nursing mothers need many more calories than that!  Caloric restriction would have the most dramatic effect on the breastfeeding mother herself – she would end up feeling depleted and generally unwell.  But eating too few calories can also decrease milk supply for some mothers.  Probably the biggest concern here is that this diet guarantees a very rapid weight loss (15 pounds in 10 days), which is much too quick for a breastfeeding mother.  Losing weight this rapidly could very likely cause a drop in a mother’s milk supply.

But if weight loss is a priority for you, numerous studies have shown that gradual weight loss of a pound or two per week is perfectly healthy for a breastfeeding mother and will not adversely affect her milk composition or supply.  Here is a link to one of these studies: (http://www.ncbi.nlm.nih.gov/pubmed/11281248?dopt=Abstract).  And if you want to eat healthier while nursing, you can do a “whole foods” detox.  Focus on fruits, vegetables, healthy fats, healthy proteins, and unprocessed grains.  See how much better you feel if you eat “nothing from a box.”  Combine this with some aerobic exercise (take your baby for a brisk walk in a baby carrier or stroller), and you’ll probably lose weight.  But most of all, you’ll feel wonderful!

unnamedWendy Wisner is a Board Certified Lactation Consultant (IBCLC), writer, and mother of two amazing boys.  In addition to her work with breastfeeding moms, she has published two books of poems, and a handful of articles about mothering and breastfeeding.  She blogs at www.nursememama.com.


  1. Excellent post but I was wanting to know if
    you could write a litte more on this topic? I’d be very grateful if you could elaborate a little
    bit more. Bless you!

  2. Taking a walk is a great way to begin your fall toddler activities.
    The first decision you need to make is what type of filling
    would be the best for your child. You should always try to give the food to your baby that is best for
    him and organic food provides quality as well best food for your baby.

  3. Malikha Gayles says

    My son is 19 months old and I’m not so concerned with losing my supply because he mainly nurses for comfort and at night. My milk is not his primary source of nutrition. Is restricted caloric intake the only reason not to do a 10 day smoothie cleanse?

  4. I’m doing the 10-Day Green Smoothie Cleanse and my baby is almost 15 months. I’m on day 7 and my milk supply is better than ever. Track your calories and use the protein powder and eat the approved snacks so you get enough calories. This was super important to me to know I was still eating enough for my milk.

    • Did you loose weight doing this cleanse? I’m starting it Monday and I mostly breast feed for comfort as well.

    • I started the 10 day cleanse 2 years ago as a way to prepare for a healthy pregnancy and it worked wonders (no morning sickness or any sickness for that matter, a very healthy baby born with gorgeous skin). I am breasfeesing him now (he is 2 months old) and I really want to go back to my green smoothies, thinking about modified version (one very healthy meal a day as I continue post natal vitamins)
      I am glad I found your response. I think I will start once baby turns 3 months.

    • Sabreen Saleh says

      Please tell me more! My son is 3.5 months and I want to do this cleanse more than ever. I bought the book, red some of it and want to start asap. But I’m scared of losing my milk supply and don’t want to supplement with formula!

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