The UN's International Agency for Research on Cancer (IARC) said Friday that three pesticides, including a commonly-used weedkiller, were "probably" carcinogenic and two others, which have already been outlawed or restricted, were "possibly" so.
IARC classified the herbicide glyphosate and insecticides malathion and diazinon as "probably carcinogenic" on the basis of "limited evidence" of cancer among humans, while insecticides tetrachlorvinphos and parathion were "possibly carcinogenic" in the light of "convincing evidence" from lab animals.