Can organophosphate flame retardants from furniture end up in breast milk?

What's actually in it

Organophosphate esters (OPEs) have replaced older brominated flame retardants in couches, mattresses, carpet padding, and electronics. Manufacturers switched because the old chemicals were banned, but the replacements aren't necessarily safer. OPEs leach out of furniture into household dust, and you breathe them in and absorb them through your skin every day.

Nursing mothers accumulate these chemicals from their home environment. Because OPEs dissolve in fat, they transfer readily into breast milk, which is high in fat content.

What the research says

A 2026 study in Environ Pollut collected breast milk samples from mothers across China and tested for organophosphate esters and their metabolites. They found multiple OPEs in nearly every sample.

The most commonly detected compounds included TCEP, TCPP, and TDCPP, all of which are used as flame retardants in furniture foam and electronics. The study also found metabolites, proving that mothers' bodies are actively processing these chemicals, and the breakdown products end up in the milk too.

The researchers ran a health risk assessment for breastfeeding infants. While individual chemical levels were generally below existing safety limits, babies are exposed to the full mix of all these chemicals at once. Infants also have immature livers that can't break down toxins as effectively as adults. Keeping your home well-ventilated and vacuuming dust frequently can help reduce exposure.