Study Links Cancer And In-Home Pesticide Use

Woman using fertilizer with hose in yard

WASHINGTON – A new study by Harvard researchers provides disturbing evidence that children’s exposure to household insecticides is linked to higher risks of childhood leukemia and lymphoma, the most common cancers in children. The analysis also found an association between use of outdoor herbicides to lawns and gardens and higher risks of leukemia.

“It is very troubling, albeit not surprising, to see additional scientific evidence linking pesticide use to childhood cancer,” said Ken Cook, EWG president and co-founder. “The findings confirm parents’ worst fears that they could be unknowingly exposing their children to harmful chemicals that can lead to serious, even life-threatening, illnesses.”

“This study should remind us once again that we must protect our kids by curtailing our use of these toxic chemicals in and outside of the home,” Cook added.

The results from a meta-analysis, to be published in the journal Pediatrics in October, combined 16 studies reporting children’s exposure to pesticides used in and around the home. As the authors noted, children are more vulnerable to harmful pesticides because their bodies and immune systems are still developing. The researchers added that infants and toddlers are at especially high risk of exposure because they often play on pesticide-treated lawns or on carpets or floors where pesticide residues accumulate, and then put their hands and fingers in their mouths.

“Parents should consider the danger of pesticides in terms of the lethal toxicity of any products and the proximity to where your children play, eat, rest and sleep,” said Dr. Alex Lu, a Harvard Chan School of Public Health associate professor and senior author of the study. “This is also true for schools, playgrounds and sports fields.”

Lu added, “There is no justification for using chemical pesticides to maintain buildings, play areas or sport fields. There are plenty of non-chemical based treatments that will serve the purpose.”

EWG advises parents to stop using lawn and garden care, and to use indoor pesticides only as a last resort.  See Healthy Child Healthy World’s greener tips on how to control indoor pests and how to protect your pets from fleas and ticks.

Another major source of children’s exposure to pesticides is food. Conventionally grown fruits and vegetables often carry multiple pesticide residues even after they have been washed, and in some cases, peeled. That’s why EWG updates its Shopper’s Guide to Pesticides in Produce™ every year in order to help shoppers figure out which are the “dirtiest,” or most contaminated, and which are the “cleanest,” or least contaminated. The guide encourages shoppers to opt for organic versions of the “dirtiest” fruits and vegetables.

As Lu explains in this video, switching to an organic diet can significantly lower a child’s exposure to pesticides.

The American Academy of Pediatrics cites EWG’s Shopper’s Guide as a reliable resource for parents looking to reduce their children’s exposures.


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