A new research study suggests there is a link between women's exposure to household insecticides, including roach and mosquito killers, and the autoimmune disorders rheumatoid arthritis and lupus. The scientist did not find a direct cause-and-effect relationship between insecticide exposure and the illness, but said it is possible that the women have something else in common that accounts for their higher risk. Christine Parks, epidemiologist with the National Institute of Environmental Health Sciences, and the lead investigator of the study, said the findings raise a red flag.
Previous research has linked agricultural pesticides to higher risk of rheumatoid arthritis and lupus, two diseases in which the immune system goes haywire and begins to attack the body. Farmers, among others, appear to be vulnerable. Parks and her colleagues wanted to find out whether smaller doses of insecticides, such as those people might encounter at home from either personal or commercial residential use, might have a similar effect. The researchers examined data from a previous study of almost 77,000 postmenopausal women aged 50 to 79. Their findings were to be released Monday at the American College of Rheumatology's annual scientific meeting in Philadelphia.
Women who reported applying insecticides or mixing them — about half — had a higher risk of developing the two autoimmune disorders than women who reported no insecticide use. This was the case whether or not they had lived on a farm. Those who used or mixed the insecticides the most — judged by frequency or duration — had double the risk.
Even so, the risk of developing the diseases remained very low. Overall, Parks said, about 2% of older adults develop the conditions. Parks said the insecticides that the women used included insect killers, such as those designed to eradicate ants, wasps, termites, mosquitoes and roaches. They didn't include insect repellents. Source: USA Today
There are some caveats to the study, including the fact that it is not clear exactly which products the women used or when. The findings indicate that there is a pressing need for more research on the environmental risk factors and to gain a better understanding of what factors might explain the study's findings, as well as which chemicals might be associated with these risks.
A new research study suggests there is a link between women's exposure to household insecticides, including roach and mosquito killers, and the autoimmune disorders rheumatoid arthritis and lupus. The scientist did not find a direct cause-and-effect relationship between insecticide exposure and the illness, but said it is possible that the women have something else in common that accounts for their higher risk. Christine Parks, epidemiologist with the National Institute of Environmental Health Sciences, and the lead investigator of the study, said the findings raise a red flag.