Is breastmilk in the city carrying flame retardants?
Yes, in small amounts. Organophosphate flame retardants from couches and electronics show up in human milk.
What's actually in it
Organophosphate flame retardants, or OPFRs, are sprayed onto foam couches, car seats, baby gear, and electronics. They drift off into house dust over time. Moms breathe and swallow that dust, so the chemicals end up in their bodies and pass into milk.
The amount in breastmilk is small. The amount in formula made with tap water can be similar or higher.
What the research says
A 2026 study in Environ Pollut tested human milk for OPFRs and their breakdown products. Most samples had detectable levels. The amounts were below the worry line for breastfeeding babies, but the team flagged that the dose adds up if mom lives near new furniture, a noisy traffic corridor, or in a small home with little ventilation.
Breastfeeding still came out as the right choice for almost every baby.
To lower the load: vacuum with a HEPA bag, damp-dust often, and avoid new foam couches with strong chemical smell. Wash hands and your kid's hands before meals. Skip strong scented candles and air fresheners that add to indoor chemicals.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Comprehensive investigation on organophosphate esters and their metabolites in human milk from China. | Environ Pollut | 2026 |
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