A U.S. federal appeals court on Monday said California cannot require a cancer warning label on Bayer’s glyphosate-based weed killer Roundup.
U.S. District Judge William Shubb said the state’s cancer warning is misleading, adding that the “great weight of evidence” indicates it isn’t a known carcinogen.
Roundup is the world’s most widely-used weed killer. California wanted the warning label because the weed killer contains glyphosate, which an international agency said was a probable cause of cancer.
But Shubb said the Environmental Protection Agency and others have found no connection to cancer.
Bayer acquired Roundup with its $63 billion purchase of Monsanto in 2018.