Breastfeeding is great for mum and baby. But, it can sometimes change the smell or taste of milk. This might be because of high lipase activity in the milk.
Lipase breaks down fats in milk, helping babies get nutrients. But too much lipase can make milk smell soapy or metallic. This smell can happen after the milk is stored.
This problem is common and doesn’t mean anything is wrong. The milk is still good for the baby. But, some babies might not like the taste.
Key Takeaways
- High lipase breastmilk is relatively uncommon but can cause changes in the smell and taste of stored milk.
- Lipase activity often starts affecting stored milk after up to 12 hours of pumping.
- Scalding the milk can help deactivate the excess lipase to prevent taste and odour changes.
- While high lipase milk is safe, some babies may refuse it due to the altered flavour.
- There are various methods to salvage frozen high lipase milk, such as mixing with fresh milk or adding vanilla extract.
What is Lipase and High Lipase Milk?
Lipase: An Essential Enzyme for Fat Digestion
Lipase is an enzyme found in breast milk. It helps break down fats for babies. This makes it easier for them to get the nutrients they need.
Some mothers make milk with too much lipase. This is called high lipase milk. It can smell and taste bad, especially after it’s stored.
Even though it smells and tastes bad, high lipase milk is still safe for babies. It’s just that the smell and taste are different.
| Lipase Enzyme in Milk | Fat Digestion | High Lipase Milk |
|---|---|---|
| Naturally occurring enzyme in breast milk | Helps break down lipids and fats for infant absorption of essential nutrients | Condition where breast milk has excessively high levels of the lipase enzyme |
Mixing with Solids
If your baby is eating solid foods, you can mix high lipase breastmilk with them. This makes the milk taste better for your baby. You can mix it with cereals, oatmeal, or smoothies.
This method is great for babies starting solids. It helps them keep getting the good stuff from your milk. A poll showed most babies like this mix.
Adding a bit of vanilla to the milk might help too. It worked for about half the babies.
Freezing milk from different times can also be a good idea. But, it’s not clear how well it works. Offering milk when your baby is very hungry might also help.
Trying different temperatures might also work. But, it’s not clear how well it works. Keep trying new things every week. Babies’ tastes change fast.
If nothing works, you can donate the milk. It’s okay for babies fed through tubes. But, no exact numbers were given.

Dealing with high lipase milk can be tough. But, with patience and creativity, you can keep your baby healthy. You can mix it with solids or try other ideas.
High Lipase Milk: Acceptance or Rejection
High lipase milk is safe and good for babies. But, some babies might not like it because of its smell and taste. High lipase milk can cause changes in the smell and flavor of breast milk. This is because fats break down faster, especially in cool temperatures.
Not all sour-smelling milk is because of high lipase. Some cases have lower levels of lipase.
If your baby doesn’t want the high lipase milk, don’t worry. It’s a common problem. It doesn’t mean there’s anything wrong with you or your milk. The smell and taste changes depend on how fast lipase works, not how much.
Try mixing the stored milk with fresh milk. Or scald the milk before freezing. You can also mix it into solid food. Scalding breast milk before freezing can help reduce the lipase content, preventing the soapy taste. If these don’t work, use bottles when you’re apart.
“There is no evidence that high lipase milk is harmful to babies or causes future problems.”
High lipase milk is still good for many things. You can use it for milk baths, lotion, and even soap making. Breast milk baths help with dry skin and rashes.
It can also help with eczema and acne. Breast milk lotion is great for sensitive skin and cuts. You can use it for first aid too, like ear infections and burns.
And you can make soap with it. Donating high lipase milk to local milk banks is also a good idea. It helps medically fragile infants.
Conclusion
High lipase milk might smell and taste bad, but it’s safe and healthy for your baby. The smell and taste come from fats breaking down fast. But this doesn’t make the milk unsafe or less good for your baby.
If your baby doesn’t like the smell or taste, don’t worry. You can try a few things. For example, you can scald the milk or mix it with fresh milk. You can also add it to solid foods.
This problem is common for many breastfeeding moms. It doesn’t mean there’s anything wrong with you or your milk. Just be patient and try different things. You’ll find a way that works for you and your baby.
FAQ
What is high lipase milk?
What is the role of lipase in breast milk?
What causes high lipase levels in breast milk?
How does high lipase milk affect babies?
How can I manage high lipase milk?
Can high lipase milk be treated?
Can I mix high lipase milk with solid foods?
Why do some babies accept high lipase milk while others reject it?
Source Links
- What the heck is high lipase breast milk (and how do I know if I have – https://milkbarbreastpumps.com.au/blogs/breastfeeding/what-the-heck-is-high-lipase-breast-milk-and-how-do-i-know-if-i-have-it?srsltid=AfmBOornZYIT6o9Npr8RZRUuH8WrjfkMW4haO7sIh4efAXTYBJuUNQxw
- How to know you have high lipase + 5 ways to battle it – Bumblebaby – https://bumblebabychicago.com/lipase/
- High Lipase Milk | Karing for Postpartum – https://www.karingforpostpartum.com/blog/high-lipase-milk
- Factors Affecting Breast Milk Taste and Smell | Medela – https://www.medela.com/en-us/breastfeeding-pumping/articles/pumping-tips/3-things-that-can-impact-breast-milk-taste-and-smell
- What is High Lipase Breast Milk & How Does It Affect Your Baby? – https://www.mumilk.com.au/blogs/guides/what-is-high-lipase-breast-milk
- Smell of Stored Human Milk – https://llli.org/breastfeeding-info/smell-human-milk/
- I Had High Lipase Milk—Here’s What That Means – https://www.parents.com/i-had-high-lipase-milk-heres-what-that-means-7093883
- What Is High Lipase Breast Milk? – https://www.whattoexpect.com/first-year/breastfeeding/high-lipase-breast-milk
- Lipase in breastmilk – https://milkygoodness.com.au/blogs/news/lipase-in-breastmilk?srsltid=AfmBOorPKnqtNlzz1jGWB99wlCWy7fgW2OMvVoBc-l-DCLpaRlC3jJ-L
- My expressed breastmilk doesn’t smell fresh. What can I do? – KellyMom.com – https://kellymom.com/bf/pumpingmoms/milkstorage/lipase-expressedmilk/
- High Lipase Milk: Causes, Effects And Tips To Manage It – https://www.momjunction.com/articles/high-lipase-breast-milk-causes-tips_00722158/
- Breast Milk Storage and Handling – Insured Ameda Direct – https://insured.amedadirect.com/breast-milk-storage-and-handling/
- High Lipase Breast Milk- When Baby Refuses The Bottle – My Pure Delivery – https://mypuredelivery.com/high-lipase-breast-milk-when-baby-refuses-the-bottle/
- What Causes High-Lipase Breast Milk? | ParentData by Emily Oster – https://parentdata.org/high-lipase-breast-milk/
- Battling and Resolving Excess Lipase in Breastmilk — SDBFC – https://www.sdbfc.com/blog/2012/9/4/battling-and-resolving-excess-lipase-in-breastmilk
- How to Get Baby to Drink High Lipase Breast Milk – https://exclusivepumping.com/high-lipase-breastmilk/
- Scalding Breastmilk with High Lipase – https://spectra-baby.com.au/blogs/all/scalding-breastmilk-high-lipase?srsltid=AfmBOooXAwoAAVbwQLh5wTBli9Pspd6iNUCYTROXbXlrkoAyVYD6fMTL
- High Lipase Milk: Cause, Effects, and How to Manage – https://www.healthline.com/health/breastfeeding/high-lipase-milk
- PDF – https://www.nature.com/articles/pr1980560.pdf
- The level of bile salt-stimulated lipase in the milk of Chinese women and its association with maternal BMI – https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7183295/
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