A U.S. judge blocked California from requiring that the popular weed-killer Roundup carry a label stating that it is known to cause cancer, saying the warning is misleading because almost all regulators have concluded there is no evidence that the product’s main ingredient is a carcinogen.
U.S. District Judge William Shubb in Sacramento issued a preliminary injunction on Monday in a lawsuit challenging the state’s decision last year to list glyphosate as a chemical known to cause cancer.
The listing triggered the warning label requirement for Roundup that was set to go into effect in July.
Glyphosate is not restricted by the U.S. Environmental Protection Agency and has been widely used since 1974 to kill weeds while leaving crops and other plants alive.
The International Agency for Research on Cancer, based in Lyon, France, has classified the chemical as a “probable human carcinogen.” That prompted the California Office of Environmental Health Hazard Assessment to add glyphosate to its cancer list.