Why does my breast milk smell rotten?

Understanding the Smell of Breast Milk
Breast milk is often praised for its nutritional benefits, but many mothers may notice that their milk can sometimes develop an unusual odor, such as a rotten or sour smell. This phenomenon can be concerning, but it is important to understand the underlying causes and implications.
The Role of Lipase
One of the primary reasons breast milk may smell rotten, particularly like rotten eggs, is due to the enzyme lipase. Lipase is naturally present in breast milk and plays a crucial role in breaking down fats. When breast milk is expressed and stored, especially if it is refrigerated or frozen, lipase can continue to act on the milk. This enzymatic activity can lead to the breakdown of fats into free fatty acids, which can produce a distinct sour or rotten egg smell.
This odor is particularly common when milk is frozen and then thawed. While the smell may be off-putting, it is generally harmless and does not indicate that the milk has spoiled. In fact, many mothers report that their babies will still accept milk with this odor without any issues.
Factors Influencing Odor
Several factors can influence the smell and taste of breast milk. These include:
– Diet: What a mother eats can significantly affect the flavor and aroma of her milk. Foods like garlic, onions, and certain spices can impart strong smells.
– Storage Conditions: The way breast milk is stored can also impact its smell. Milk that is left out at room temperature for too long or improperly stored may develop off odors.
– Medications: Certain medications can alter the composition of breast milk, potentially affecting its smell.
Is It Safe?
For mothers concerned about the smell of their breast milk, it is reassuring to know that in most cases, a sour or unusual odor does not indicate spoilage. The Australian Breastfeeding Association notes that variations in smell are common and usually nothing to worry about. However, if the milk smells rancid or has an unusual color, it may be best to consult a healthcare professional.
Conclusion
In summary, a rotten or sour smell in breast milk is often a result of lipase activity and can be influenced by dietary choices, storage methods, and medications. While it may be alarming, this change in odor is typically harmless, and many babies will continue to thrive on milk that has developed these characteristics. If there are any concerns about the quality of breast milk, seeking advice from a lactation consultant or healthcare provider can provide peace of mind.

Can my baby drink high lipase milk?

WHAT CAN I do about it? First thing’s first, having high lipase milk does not mean your milk is “bad”! Some babies take high lipase milk without thought. Yes, it is perfectly safe for babies to drink high lipase milk.

Does mastitis milk smell bad?

We suggest that the ammonia content significantly increases in breasts with inflammation due to mastitis, and infants might be sensitive to a change in the odor of milk during mastitis. The perception of an ammonia odor in milk seems a reasonable explanation for refusing to suckle.

How can you tell if breast milk is spoiled?

It will also smell bad, much like spoiled cow’s milk. And, like spoiled cow’s milk, breast milk that’s old will taste sour. (It’s fine to taste your breast milk to check!) Always label your pumped milk with a time and date so you can tell how old it is.

How to get rid of high lipase in breastmilk?

Scalding milk is believed to slow lipase’s action in the milk. Research shows that lipase is not responsible for the changes in smell. Removing lipase removes an important enzyme that helps the baby digest fats.

Can babies get bottle rot from breast milk?

Unless there is another food in the baby’s mouth, human milk does not induce tooth rot. Tooth decay is caused by formulas. Bacteria may develop a bit more with the aid of human milk. The growth of bacteria is greatly aided by formula.

What does high lipase breast milk smell like?

The most notable signs of high lipase milk are changes in taste and smell. You might notice your milk having a scent or taste similar to metallic, vomit, eggs, soap, or fishy. The appearance of the milk might also change, though this isn’t always the case.

How to know if breastmilk is spoiled?

It will also smell bad, much like spoiled cow’s milk. And, like spoiled cow’s milk, breast milk that’s old will taste sour. (It’s fine to taste your breast milk to check!) Always label your pumped milk with a time and date so you can tell how old it is.

What happens if a baby drinks spoiled breast milk?

They may throw up, or have an upset stomach, diarrhea or fever.

Why does my milk smell rotten?

When milk is left out or past its expiration date, bacteria such as Lactobacillus can multiply and ferment the lactose (the sugar in milk) into lactic acid. This process lowers the pH of the milk, causing it to sour and develop a distinct, unpleasant odor.

Is it normal for breast milk to smell bad?

Some mums notice that their expressed milk has an ‘off’ or soapy smell and taste, even when they have handled it cleanly. This can be caused by oxidation following the normal action of enzymes in the milk designed to help the baby digest the milk fats. This problem doesn’t make the milk unsafe.