Study Reveals How Kids’ Mattresses Release Hidden Toxins - Video

A new study published in Environmental Science & Technology has found that children's mattresses emit toxic chemicals linked to developmental and hormonal disorders. Researchers, led by Prof. Miriam Diamond from the University of Toronto, measured indoor air quality in 25 bedrooms of children aged 6 months to 4 years. They detected high levels of phthalates, flame retardants, and UV filters—especially near the beds.

To trace the source, the team also tested 16 new children’s mattresses using lab simulations. The results showed that a child’s body heat and weight significantly increased the release of these chemicals into the air. Despite bans on certain chemicals in toys, many of the same substances were found in mattresses, which remain poorly regulated.

The phthalates and organophosphate ester flame retardants measured in this study are hormone disruptors and linked to neurological harms, including learning disorders, reduced IQ scores, behavioural problems, and impaired memory, said the researchers.

Some are also linked to childhood asthma and cancer. Several UV filters are hormone disruptors. Children are uniquely vulnerable to exposure, given that they are still developing, have hand-to-mouth behaviours, and have breathing rates ten times higher than adults.

They also have more permeable skin and three times the skin surface area relative to their body weight than adults. Flame retardants are linked to neurological, reproductive, and hormonal harm as well as cancer, and also have no proven fire-safety benefit as used in mattresses.

The researchers call for manufacturers to be more vigilant about the chemicals in children’s mattresses through testing.

The authors recommend decluttering children’s sleeping areas by reducing the number of pillows, blankets, and toys. They also recommend washing and refreshing your child’s bedding and bed clothing frequently since this act as a protective barrier to reduce exposure.

References: Young Children’s Exposure to Chemicals of Concern in Their Sleeping Environment: An In-Home Study, Sara Vaezafshar, Sylvia Wolk, Victoria H. Arrandale, Roxana Sühring, Erica Phipps, Liisa M. Jantunen, and Miriam L. Diamond, Environmental Science & Technology Letters Article ASAP, DOI: 10.1021/acs.estlett.5c00051