Can flame retardants show up in breast milk?
Use caution, but do not stop breastfeeding because of this page. A 2026 Environmental Pollution study measured organophosphate esters and metabolites in 100 pooled human milk samples from China and found medium-exposure infant intake was not expected to cause significant health risks.
What is actually in it
Organophosphate esters, or OPEs, are chemicals used as flame retardants and plasticizers. They can show up in dust, air, food, plastics, furniture, paint, and textiles.
Babies can contact dust through hands, floors, clothing, bedding, and indoor air. Nursing parents can also be exposed through food and household dust.
What the research says
A 2026 Environmental Pollution study measured 14 OPEs and 10 OPE metabolites in 100 pooled human milk samples from China. Both OPEs and metabolites were found. Food consumption among lactating women was linked with some OPE levels in milk.
The same study calculated infant intake through breastfeeding and found that medium exposure was not expected to cause significant health risks. It also noted that many OPEs lack reference dose data, so researchers still need to keep studying them.
A 2021 Toxics review found OPEs in dust and air, and named electronics, furniture, paint, plastics, textiles, and food as exposure sources.
What to do at home
Keep breastfeeding questions between you and your clinician. Do not stop nursing based on one exposure study.
Damp-dust, wash hands before feeding, and vacuum with a HEPA filter if you have one. Replace crumbling foam items. For baby bedding and blankets, choose washable cotton, bamboo, or linen with clear material labels when practical.