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June 24, 2015

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WHO finds cancer link to insecticides

The insecticide lindane, once widely used in agriculture and to treat human lice and scabies, causes cancer and has been specifically linked to non-Hodgkin lymphoma, the World Health Organization said yesterday.

The WHO鈥檚 International Agency for Research on Cancer also said that DDT, or dichlorodiphenyltrichloroethane, probably causes cancer, with scientific evidence linking it to non-Hodgkin lymphoma, or NHL, testicular cancer and liver cancer.

In a review of various agricultural chemicals, IARC鈥檚 specialist panel said it had decided to classify lindane as 鈥渃arcinogenic to humans鈥 in its Group 1 category, and DDT as 鈥減robably carcinogenic to humans鈥 in its Group 2A class.

Lindane, which since 2009 has been banned or restricted in most countries under the Stockholm Convention on Persistent Organic Pollutants, was previously used extensively for insect control in agriculture. An exemption to the ban allows it to be used as a second-line treatment for lice and scabies.

DDT was introduced for the control of insect-borne diseases during World War II and was later applied widely to eradicate malaria and in agriculture.


 

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