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Why must thawed breast milk be used within 24 hours?

The Importance of Using Thawed Breast Milk Within 24 Hours
Thawed breast milk is a precious resource for nursing mothers, providing essential nutrition and antibodies to infants. However, once breast milk has been thawed, it is crucial to use it within 24 hours to ensure the safety and health of the baby. This guideline is rooted in both the biological properties of breast milk and the potential risks associated with bacterial growth.
Bacterial Growth and Safety Concerns
When breast milk is frozen, it preserves the milk’s nutritional and immunological properties. However, the process of thawing alters this balance. As breast milk thaws, it becomes more susceptible to bacterial contamination. The CDC emphasizes that once thawed, breast milk should be treated like any other perishable food item, which means it can only be safely stored in the refrigerator for a limited time.
The primary concern is that bacteria can multiply rapidly in milk that is kept at temperatures above freezing. While freezing halts bacterial growth, thawing allows for the possibility of bacteria to thrive, especially if the milk is not consumed promptly. This is particularly critical for infants, whose immune systems are still developing and are more vulnerable to infections.
Nutritional Integrity and Quality
Another reason for the 24-hour guideline is the preservation of the milk’s nutritional quality. Freezing can damage some of the beneficial components in breast milk, such as certain enzymes and antibodies. While thawed milk still retains many of its health benefits, the longer it sits, the more its quality may degrade. Experts recommend using thawed breast milk as soon as possible to ensure that the baby receives the maximum nutritional value.
Practical Considerations for Parents
For parents managing a supply of frozen breast milk, the 24-hour rule serves as a practical guideline to minimize waste and ensure safety. Many mothers find it helpful to thaw only what they anticipate will be used within that timeframe. This approach not only reduces the risk of spoilage but also encourages the use of older milk first, thereby maintaining a fresh supply.
In conclusion, the recommendation to use thawed breast milk within 24 hours is a critical guideline aimed at safeguarding infant health. By adhering to this timeframe, parents can ensure that their babies receive the best possible nutrition while minimizing the risks associated with bacterial growth and nutrient degradation.

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.

Can I use 5 hour old breast milk?

Freshly expressed breast milk can be kept at room temperature for up to six hours. However, it’s optimal to use or properly store the breast milk within four hours, especially if the room is warm.

Do you have to use thawed breast milk within 24 hours?

If you thaw breast milk in the refrigerator, use it within 24 hours. Start counting the 24 hours when the breast milk is completely thawed, not from the time when you took it out of the freezer. Once breast milk is brought to room temperature or warmed, use it within 2 hours.

Why is breastmilk only good for 24 hours?

Bacteria can grow rapidly in thawed milk, especially if it’s kept at room temperature or if the storage conditions are not optimal. Using the milk within 24 hours minimizes the risk of bacterial growth and ensures the milk is safe for your baby.

How long does frozen milk last after thawed?

Depending on the size of the container, it may take a day or longer to defrost. And once thawed, it’s best to use the milk within several days. You might notice that the thawed milk is separated or looks like it has a grainy texture. This goes for both dairy milk and plant-based milks.

What happens if you leave milk out for 24 hours?

How Long Can You Leave Milk Out of the Fridge? You can leave milk out of the fridge at room temperature for up to two hours, according to the USDA. “Leaving milk out too long can potentially lead to foodborne illness,” Amidor explains. “Pathogenic microorganisms like to grow in temperatures between 40 to 140 degrees.

How long can breastmilk sit out after thawed?

Don’t leave frozen breast milk to defrost at room temperature. Once fully thawed, previously frozen breast milk may be kept at room temperature for a maximum of two hours or in the refrigerator for up to 24 hours. Don’t thaw or heat frozen breast milk in a microwave or in boiling water.

Why discard breast milk after 2 hours?

Milk storage guidelines recommend discarding leftover breast milk after two hours because of the potential for bacterial contamination from your baby’s mouth.

What is the 5 5 5 rule for breast milk?

Something I recommend to moms is the 5-5-5 rule. Try and use milk within five hours at room temperature, five days in the fridge, and by five months in the freezer.

Why cant you use breastmilk after 2 hours?

Milk storage guidelines recommend discarding leftover breast milk after two hours because of the potential for bacterial contamination from your baby’s mouth.

Natasha Lunn

Tash is an IBCLC and Business Coach helping fellow IBCLCs create fun, profitable businesses that are more than just an expensive hobby. Before becoming an IBCLC and starting her private practice - The Boobala, Tash graduated as an Osteopath in 2008 and has been in Private Practice in South West Sydney. She was also a volunteer Breastfeeding Counsellor and Community Educator with the Australian Breastfeeding Association for 6 years. Through her business, Your Lactation Biz, Tash coaches and creates products to help new and seasoned IBCLCs build businesses that suit their personality and lifestyle.

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