What happens to breast milk when a mom gets a COVID shot or gets sick?
Associations between SARS-CoV-2 Infection or COVID-19 Vaccination and Human Milk Composition: A Multi-Omics Approach
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Scientists looked at breast milk to see if it changes when a mom gets a COVID vaccine or gets infected with the virus.
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 527 / 44
Evidence Score
A snapshot of a population at a single point in time. Can identify correlations and prevalence, but cannot determine the direction of cause and effect.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Scientists looked at breast milk to see if it changes when a mom gets a COVID vaccine or gets infected with the virus.
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 527 / 44
Evidence Score
A snapshot of a population at a single point in time. Can identify correlations and prevalence, but cannot determine the direction of cause and effect.
Related Content
Claims (5)
Getting the COVID vaccine barely changes the proteins in your blood, but actually catching the virus causes big shifts in those same proteins.
Getting a COVID-19 vaccine while breastfeeding doesn’t really change the makeup of your milk — no big shifts in fats, nutrients, or proteins — so it probably doesn’t affect your milk much at all.
Different COVID-19 vaccines change the proteins in breast milk in different ways. The Johnson & Johnson vaccine causes the most changes, while Moderna and Pfizer cause fewer.
Getting COVID-19 while breastfeeding seems to change the makeup of breast milk—like its proteins, fats, and other chemicals—in a noticeable way.
After getting the COVID vaccine, moms who are breastfeeding don’t pass any of the vaccine ingredients into their breast milk.