Unsafe sleeping? Mattresses may expose children to toxins as they sleep, studies find

By Shannon Kelleher

While monsters under the bed may be just childhood fantasy, parents might have real reason to fear what’s lurking in their children’s mattresses.

These mattresses can contain a variety of toxic chemicals including flame retardants and substances called “plasticizers” that make materials softer and more flexible, exposing kids and babies as they sleep to harmful emissions linked to issues with cognitive function, asthma, cancer and other health problems, according to new peer-reviewed research.

In a study published April 15 in the Environmental Science & Technology Letters, scientists detected over two dozen phthalates, flame retardants, and  UV-filter chemicals (which protect materials from sunlight) in 25 Canadian children’s bedrooms, with the highest levels in the air around the beds where the children slept.

A related study published in the journal Environmental Science & Technology pointed to mattresses as the likely source, finding emissions of 21 semi-volatile organic compounds in 16 newly purchased children’s mattresses when the researchers simulated a child’s body weight and temperature.

While the testing took place with mattresses purchased in Canada, it seems likely that mattresses in the US would contain similar chemicals of concern, since the countries use some of the same brands and likely rely on some of the same suppliers, said Arlene Blum, executive director of the Green Science Policy Institute and an author of one of the studies.

The findings “underscore the role of children’s mattresses as a significant source” of these chemicals in children’s sleeping environments and are “particularly concerning given the substantial amount of time children spend sleeping each day, their tendency for higher exposures and increased susceptibility to harm due to their developmental stage,” the authors write.