For a nursing mother, drinking her own breast milk is generally safe but offers negligible health benefits since the same nutrients and antibodies are already circulating in her body.
You may have seen headlines about adults adding breast milk to coffee or smoothies, believing it gives an immunity boost. The trend gained traction after celebrities mentioned drinking their own milk for a cold or extra energy.
So what happens if you drink your own breast milk? The honest answer is that it’s safe for the mother herself, but the benefits are likely minimal. Here’s what the evidence says—and when it can actually be risky.
The Safety Question: Your Own Milk
For a breastfeeding mother who drinks her own milk, the main concern isn’t safety—it’s whether there’s any point. Experts quoted in USA Today and The Bump note that the antibodies and immune factors in breast milk are already present in your bloodstream.
Your body made those molecules specifically for your baby, but you also have them circulating in your own system. So drinking your own milk doesn’t give you a fresh dose of something you’re missing. It’s generally considered safe from a contamination standpoint—assuming you handle and store it the same way you would for your infant.
But the real question is whether you’ll feel any different. Most experts say the effect is likely negligible because you’re essentially re‑ingesting nutrients and immune cells that your body already produced and already uses.
Why Adults Consider Drinking Breast Milk
The idea of drinking your own breast milk usually comes from a few common motivations. Here are the reasons people try it and what the evidence says about each.
- Boosting immunity when sick: Many mothers wonder if drinking milk when they have a cold will help them recover. While breast milk contains antibodies, these are already active in your body, so the extra dose probably doesn’t add much. It’s safe to continue breastfeeding your baby, though.
- Increasing milk supply: Some believe that re‑ingesting milk signals the body to make more. According to a brand blog on Milky Mama, there is no scientific evidence that drinking your own milk increases supply. The hormones that regulate milk production aren’t triggered by swallowing milk.
- Partner breastfeeding or sexual activity: Adult breastfeeding between partners is sometimes considered. It’s generally safe if the partner is known and healthy, but factors like infections or medications should be checked first.
- Nutritional boost for adults: Breast milk is rich in fat, protein, and carbohydrates for infants. For an adult with a balanced diet, those nutrients don’t provide a meaningful advantage—you already get them from food.
None of these motivations are backed by strong evidence when it comes to drinking your own milk. The risks increase sharply if you consider milk from someone else.
What Research Shows About Risk
The big warning comes from studies on breast milk obtained from other people—especially online. A 2015 study published in the BMJ analyzed samples of breast milk purchased over the internet and found that many contained high levels of pathogenic bacteria, including fecal contamination. Researchers detailed these findings in the Bacterial Risk Unpasteurized Milk analysis. Contamination often happens during collection, storage, or shipping.
The same study also flagged viral risks like cytomegalovirus (CMV), hepatitis B, hepatitis C, and even HIV. Even if a donor claims to be tested, milk sold online isn’t pasteurized or screened the way donor milk banks do it.
| Situation | Safety Level | Key Concern |
|---|---|---|
| Drinking your own milk | Generally safe for mother | Negligible benefit |
| Milk from a known, healthy partner | Low risk if no infections | Medication/disease status |
| Milk from an anonymous online seller | High risk | Bacteria, viruses (HIV, hepatitis) |
| Milk from a regulated milk bank | Safe for medical use (babies) | Pasteurized, donor screened |
| Milk expressed at home with poor hygiene | Moderate risk | Bacterial contamination |
Risks from contamination and disease are real for anyone consuming breast milk that isn’t their own or isn’t from a trusted screened source. Even if the milk looks fine, harmful pathogens can be present.
Key Risks to Keep in Mind
If you’re considering drinking breast milk—whether your own or someone else’s—here are the main safety factors to consider.
- Infectious disease transmission: Unpasteurized milk from unknown donors can carry CMV, hepatitis B and C, and HIV. The BMJ study found that many online samples contained these viruses, and there’s no way to guarantee safety without lab screening.
- Bacterial contamination: Poor handling, improper storage temperatures, or unclean pumping equipment can introduce bacteria like E. coli, salmonella, or Staphylococcus. CBS News reported dangerous impurities in human milk sold online.
- Drug and alcohol residues: Prescription medications, illegal drugs, or alcohol can transfer into breast milk. If you take medications, your milk may contain traces of them, which could affect an adult consumer.
- No proven immune benefit for you: The antibodies in breast milk are targeted to pathogens the mother has encountered. Since those antibodies are already in your bloodstream, drinking your own milk offers no extra protection against illness.
These risks are well‑documented for unpasteurized human milk. For your own milk, the risks are lower but the benefits are still unproven.
Does Breast Milk Have Nutritional Value for Adults?
Breast milk is designed for infants, not adults. It contains fat, protein, carbohydrates, vitamins, and immune cells that support a baby’s growth and protect against infection. The University of Rochester Medical Center explains that breast milk contains antibodies and immune cells that help prevent infection, as noted in its Immune Cells Prevent Infection resource.
But adults already have mature immune systems and diets. Drinking a few ounces of breast milk won’t provide a meaningful dose of anything you don’t already get from food. The calorie content is roughly 20–22 calories per ounce—similar to whole milk but with a different composition.
For a nursing mother, the best use of her breast milk is for her baby. The American Academy of Pediatrics recommends exclusive breastfeeding for about six months, and the immune benefits for infants are well‑established.
| Component | Amount per 100 mL | Adult Relevance |
|---|---|---|
| Calories | ~67–75 kcal | Easily obtained from food |
| Fat | ~3.5–4.5 g | Similar to 2% cow’s milk |
| Protein | ~1.0–1.3 g | Low compared to adult needs |
| Antibodies (IgA) | Present | Already in your system |
In short, the nutritional profile is modest for an adult. The immune components are already circulating in your body, so drinking your own milk doesn’t change anything.
The Bottom Line
Drinking your own breast milk is safe for most breastfeeding mothers, but the health benefits are likely negligible. Your body already has the nutrients and antibodies you’re trying to get back. The real dangers come from consuming milk that isn’t yours—especially from unregulated online sources where bacterial and viral risks are high.
If you’re wondering whether drinking your breast milk could help with a cold or low energy, a better step is to talk with your doctor or a lactation consultant. They can explain why your body already has what it needs and help you focus on rest and nutrition that actually supports recovery.