Can flame retardants in house dust cause behavior problems in kids?

What's actually in it

Organophosphate ester flame retardants are added to couches, mattresses, carpet padding, electronics, and building insulation to slow the spread of fire. Over time, these chemicals escape from the products and settle into house dust. Young children are the most exposed because they crawl on floors, touch everything, and put their hands in their mouths dozens of times per hour.

A study on dust exposure found that the amount and particle size of dust on children's hands varies throughout the day, confirming that kids are constantly picking up whatever is in your household dust.

What the research says

A 2026 study from the Canadian CHILD Birth Cohort measured organophosphate flame retardants and plasticizers in house dust, then compared those levels to children's scores on the Child Behavior Checklist. Children living in homes with higher levels of these chemicals in the dust had more behavioral problems.

The study found associations with both internalizing behaviors (anxiety, withdrawal) and externalizing behaviors (aggression, attention problems). This aligns with what we know about how these chemicals interact with the developing brain.

Supporting this, a 2026 study on nanoplastic exposure showed that timing matters. Exposure during specific developmental windows caused different types of behavioral changes in offspring, suggesting that the age at which a child is exposed affects which behaviors are impacted.

The bottom line

You cannot eliminate flame retardants from your home entirely, but you can reduce dust exposure. Wet-mop hard floors regularly, vacuum with a HEPA filter, and wash children's hands before meals and snacks. When buying new furniture, look for items that meet fire safety standards without added chemical flame retardants. Many manufacturers now offer flame-retardant-free options.