I just threw out my spray can of Raid for flying insects. With kids in the house, I never did like the idea of spewing toxic stuff around, and only ever used it when a bug was driving me to feral insanity. Now, after reading the paper just out in this week’s issue of the journal Pediatrics, I’ll stick with the flypaper and swatter no matter how intense my irritation.
The paper concludes that the sum of previous research suggests a significant link between indoor pesticide use and childhood cancer.
To be more exact, senior author Chensheng Lu says the results “suggest that when kids are exposed to pesticides — especially a group of pesticides we call insecticides — in the indoor residential environment, kids have 43 to 47 percent more chance of having childhood cancers, specifically leukemia and lymphoma.”
Dr. Lu is an associate professor of environmental exposure biology at the Harvard T.H. Chan School of Public Health. He acknowledges the study’s limitations, in particular that it could find only 16 relevant previous papers to analyze. But, he says, it showed “consistent results in terms of the positive correlation between exposure to insecticide indoors and childhood cancer.”
The study does not aim to “cause fear in parents,” Lu says. “But it’s to give you a precautionary principle that those exposures can be prevented, can be mitigated or can be completely removed.”
Of course, these findings only heighten the dilemma for households or schools that are tormented by pests, with infestations too fierce to be dented by anything but the big toxic guns. Are we supposed to just let the roaches and mosquitoes run wild?
Dr. Lu points out that preventive measures like window screens and hole-plugging can help, and among pesticides, some applications are safer than others — for example, “bait houses” that try to attract the pest inside a box-like structure to be poisoned.
“The worst-case scenario in terms of indoor pesticide use and human exposure it to use some kind of fogger,” he says. “Also, some kind of open-air application, a broadcast application, a spray can. Those are bound to significant exposures.” Continue reading