What Does Breast Milk Taste Like And Factors That Affect It

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While it is a well-established fact that breast milk is the best form of nutrition for infants, have you ever wondered what does breast milk tastes like? Many women often ponder the question to determine if their baby is getting healthy breast milk. It is also believed that changes in breast milk’s taste may affect the breastfeeding baby’s appetite.

This post carries answers to your questions regarding breast milk’s taste, factors affecting it, and whether it is okay for you and your partner to taste breast milk.

In This Article

What Does Breast Milk Taste Like?

Human breast milk tastes sweet and creamy.

Image: Shutterstock

If you are wondering about breast milk’s characteristics, it is creamy and tastes sweet. It is a lot similar to cow’s milk. This interpretation, however, varies from person-to-person. Some people find breast milk’s flavors to be heavily sweetened, almost like honey or sugar water, while others recall it being sweet-salty.

Whatever the perceived taste, the vital point to note is that breast milk does have a peculiar taste. But if that’s the case, you may wonder how does breast milk gets its taste? Let us proceed to the next section to find out breast milk’s composition.

protip_icon Research finds
A small study on 24 mothers shows that as colostrum gives way to mature milk, its saltiness and umami flavor decrease while bitterness and sourness increase (5).

What Gives Breast Milk Its Taste?

Human milk flavor is influenced by the food you eat

Image: Shutterstock

The innate taste of human milk depends on its constituents. If the taste factors of breast milk are analyzed at a biochemical level, then its saltiness is mainly produced by sodium ions, sourness is produced by acids, and sweetness is attributed to sugars, mostly lactose. Umami is most frequently produced by free amino acids (1) (2).

However, its flavor is greatly influenced by what you eat during the lactation period. Evidence suggests that a mother eating a well-balanced diet containing foods from different food groups exposes her young one to varying flavors from a young age. It could impact your baby’s food choices later in life since they would be more likely to accept foods with a familiar taste (3) (4).

What Is In Breast Milk?

Breast milk contains about 87% water, 7% carbohydrate, 4% fats, and 1% protein along with many minerals and vitamins. Among proteins, it contains about 60% whey, and 40% is casein. Fats present in breast milk provide calories, help in brain development, and act as a medium for fat-soluble vitamins to reach the baby. Breast milk also contains cholesterol (a precursor of hormones and important for brain development) and is a great source of antibodies and immunomodulators (5) (6).

Factors That Affect Breast Milk Taste

Below are some of the significant factors that could affect the flavor of breast milk.

  1. Food: A baby may get their first taste of food flavors in the mother’s womb since the mother’s diet could affect the taste of the amniotic fluid (7). Babies get reintroduced to these tastes during breastfeeding when the mother eats the same food and drinks. In the beginning, the baby might not respond to these flavors amicably. But gradually, they develop a tolerance to it. Nevertheless, they may dislike a sudden change in breast milk’s flavor due to certain foods in the maternal diet. Experts note that strongly flavored foods, such as garlic and chili, may change the breast milk’s taste and smell (8) (9).

protip_icon Did you know?
Contrary to popular belief breast milk odor is not altered by mother’s fish oil consumption (15).

  1. Hormones: Hormonal changes postpartum are as obvious as they are during pregnancy. They can occur when your menstrual cycle returns. Hormonal changes could alter breast milk’s flavor temporarily. For instance, around ovulation, the sodium and chloride in breast milk increase, and the amount of lactose and potassium reduce, making the milk saltier (10).
  2. Alcohol: Consuming alcohol when breastfeeding exposes your baby to health risks as the alcohol passes to the baby through breast milk. Besides, it alters breast milk’s flavor and might cause sensitive babies to stop feeding temporarily (11).

    Consuming alcohol when breastfeeding alters breast milk flavor.

    Image: Shutterstock

  3. Smoking: Research shows that smoking when breastfeeding could affect breast milk’s taste (12). The alteration in the taste might affect sensitive babies, impacting their breast milk intake. Experts recommend quitting smoking during the lactation period.
  4. Medications: Several medicines might affect breast milk’s taste and smell, affecting the baby’s milk intake. Discuss with your doctor in detail the effects of any medication on your breast milk’s taste and baby’s health in general.
  5. Breast infection: Breastfeeding mothers often face breastfeeding problems, such as breast inflammation due to mastitis, which is a breast infection. Research notes that breast inflammation due to infections tends to make the breast milk salty (6).
  6. Breast milk storage: Expressed breast milk stored appropriately is safe for consumption. However, incorrectly stored breast milk could taste metallic or fishy (13). These changes indicate the milk has gone rancid and is unfit for consumption. Breast milk’s taste could also change when frozen. However, it is a normal change due to lipase, an enzyme in breast milk that breaks down the milk fat into fatty acids.

A mother of one, Kate shares her experience with storing breastmilk to discover an unusual smell coming off of it. She observes, “I have used frozen milk before with no problem, but this time something was different. I defrosted the bag in the refrigerator overnight and when I went to use it, it smelled GROSS. Not like spoiled milk, really, just… gross. Kind of plastic-y. And VERY strong…. I thought maybe the issue was with defrosting overnight, so I thawed another frozen bag in warm water. It smelled awful too. This time I tasted it, thinking that maybe it was just the smell of the plastic, but the milk was fine. Strangely enough, it was not spoiled. It tasted… off… but was not the smell of curdled or rotten milk. It tasted kind of salty, but generally like my milk normally tastes. Then I remembered reading something about lipase in the past.” She adds, “Since I tasted the milk and it didn’t seem spoiled to me, I gave it to Owen as some of his milk before bedtime (3 ounces out of the 6 or so he usually eats). He was a bit fussy while eating and didn’t eat quite as much as usual, but he did take it and then promptly fell asleep like normal. No weird spitting up or poop or gas issues to speak of, so I think I can assume that the milk was ok… So I’m operating under the assumption that the issue is lipase (i).”

protip_icon Quick tip
Heat expressed breast milk on a stove (avoid a microwave) till it bubbles at the edges. Then, quickly cool the pan in a bowl of ice and store it in a refrigerator or freezer to prevent lipase from affecting the stored breast milk taste (13).
The taste of breast milk may change when frozen.

Image: Shutterstock

Can Adults Consume Breast Milk?

An adult may try their or their partner’s expressed breast milk. You must avoid trying or letting your partner try breast milk if you can transmit any infection through it. Some people wish to try someone else’s breast milk, but doing so can be potentially dangerous since it could cause the transmission of dangerous pathogens, including HIV and hepatitis viruses.

Frequently Asked Questions

1. How does breast milk smell?

Similar to taste, the smell of your breast milk may also depend on your diet or the presence of excess lipase and give out a sour, soapy, or fishy odor (13).

2. Does breast milk get sour in the breast?

Breast milk may taste sour due to increased chemical oxidation or lipase activity in the body. But it does not imply that the milk has gotten bad inside the breast. Despite the taste or the smell, milk, drunk straight from the breast, is completely safe for the baby (13) (14).

3. What if the baby drinks bad breast milk?

If you accidentally give your baby stale stored breast milk, they may vomit it. However, you must consult your doctor if you see more severe reactions such as fever or diarrhea.

What does breast milk taste like is a common question that might occur to many? However, it should be noted that the interpretation of the taste varies from one person to another. Several factors can affect the taste of breastmilk and alter its composition, such as food, health, hormones, or any form of sickness. Therefore, it is advised that nursing mothers should have nutritious food and take proper care of themselves to ensure that their baby is getting the right amount of nutrients.

Infographic: Misconceptions About Breast Milk Taste

If you are a nursing mom, you would have heard many things and suggestions to retain your breast milk’s good taste and consistency. The infographic below explains some common misconceptions and facts surrounding breast milk taste.

myths and facts about breast milk taste (infographic)

Illustration: Momjunction Design Team

Key Pointers

  • Human milk tastes similar to cow’s milk, but interpretation may vary from person to person.
  • Breastmilk’s taste primarily relies on its nutritional composition, which depends on the maternal diet.
  • Postpartum hormonal changes, medications, breast infection, and breast milk storage are the additional factors that could affect breastmilk’s taste.

You may wonder what breast milk tastes like. Watch this informative video to understand how human milk tastes and how it differs from other types of milk.

Personal Experience: Source


MomJunction's articles are written after analyzing the research works of expert authors and institutions. Our references consist of resources established by authorities in their respective fields. You can learn more about the authenticity of the information we present in our editorial policy.

1. Clair-Yves Boquien; Human Milk: An Ideal Food for Nutrition of Preterm Newborn; Frontiers in Pediatrics
2. What’s In Breast Milk?; American Pregnancy Association
3. Rebecca L. Dunn and Rachelle Lessen; The Influence of Human Milk on Flavor and Food Preferences; Researchgate
4. Joanne M Spahn et al.; Influence of maternal diet on flavor transfer to amniotic fluid and breast milk and children’s responses: a systematic review; Oxford University Press
5. The Curious Taste of Human Milk; La Leche League USA
6. Michiko Yoshida et al.; Taste of Milk from Inflamed Breasts of Breastfeeding Mothers with Mastitis Evaluated Using a Taste Sensor; NCBI
7. Julie A. Mennella et al.; Prenatal and Postnatal Flavor Learning by Human Infants; NCBI
8. Breastfeeding and a Mother’s Diet: Myths and Facts; La Leche League GB
9. Goun Jeong et al.; Maternal food restrictions during breastfeeding; NCBI
10. P E Hartmann and C G Prosser; Acute changes in the composition of milk during the ovulatory menstrual cycle in lactating women; The Physiological Society
11. J A Mennella; Infants’ suckling responses to the flavor of alcohol in mothers’ milk; NCBI
12. Julie A. Mennella et al.; Breastfeeding and Smoking: Short-term Effects on Infant Feeding and Sleep; NCBI
13. Milk Issues; La Leche League International
14. Myths and facts about breastfeeding; State of New Jersey Department of Health
15. Marine Oils; National Library of Medicine

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Arushi Agarwal is a certified lactation consultant (IBCLC) who started as a mom. She has four years of experience and currently works at Surya Hospital, Jaipur. Her struggles through the journey of breastfeeding led her to her mission of passionately creating awareness about the struggles of breastfeeding and the need for help.

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Swati Patwal
Swati PatwalM.Sc. (Food & Nutrition), MBA
Swati Patwal is a clinical nutritionist, a Certified Diabetes Educator (CDE) and a toddler mom with more than a decade of experience in diverse fields of nutrition. She started her career as a CSR project coordinator for a healthy eating and active lifestyle project catering to school children.

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Rohit Garoo
Rohit GarooBSc, MBA
Rohit Garoo is a writer-turned-editor with over 9 years of experience in content writing, editing, and content marketing. He did his bachelors in Science at St. Xavier's College, Hyderabad, and masters in Business Administration at Osmania University.

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Anindita Ghatak holds a B.Tech degree in Biotechnology from Amity University, Kolkata. During the course of her studies, she has worked on different research projects in the fields of Microbiology and Bioinformatics. Anindita has over three years of experience writing medical articles for journals.

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