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There’s No Proof Roundup Causes Cancer But Questions Linger

March 20, 2019, 9:14 PM

The world’s regulators agree that the active ingredient in popular weedkiller Roundup is unlikely to cause cancer. Yet manufacturer Bayer AG keeps losing in court to plaintiffs who say it gave them the disease.

So is glyphosate, the world’s most widely used weedkiller, really dangerous?

There’s no proof that the chemical causes cancer in humans. Regulators in the U.S., European Union and elsewhere have said it probably isn’t a carcinogen, and more than 800 studies back that up, including an epidemiological study undertaken by the National Cancer Institute that found glyphosate use wasn’t associated with overall cancer risk. Tina Levine, ...