Hundreds of lawsuits claiming Monsanto’s weed killer Roundup caused cancer were given the green light to proceed to trial, a San Francisco judge ruled Tuesday.
The chemical glyphosate, an active ingredient in Roundup, is at the center of the debate. Cancer victims and families presenting cases say Monsanto knew about the ingredient’s risk for years, but failed to warn buyers. U.S. District Judge Vince Chhabria said there’s “rather weak” evidence the ingredient causes cancer, but the opinions of three experts linking glyphosate and non-Hodgkin’s lymphoma were not “junk science.”
Monsanto Vice President Scott Partridge denies any connection between glyphosate and cancer. In the past, Monsanto sued California’s Office of Environmental Health Hazard Assessment for adding to a list of cancer causing chemicals, and lost.