Glyphosate on trial: Second jury says Bayer’s Roundup weed killer carcinogenic

unnamed file
Plaintiff Edwin Hardeman, right, with his wife Mary. Image: Jeff Chiu/AP

A US jury has found that one of the world’s most widely-used weedkillers was a “substantial factor” in causing a man’s cancer. Pharmaceutical group Bayer had strongly rejected claims that its glyphosate-based Roundup product was carcinogenic.

But the jury in San Francisco ruled unanimously that it contributed to causing non-Hodgkin’s lymphoma in California resident Edwin Hardeman. The next stage of the trial will consider Bayer’s liability and damages. During this phase, which starts on [March 20], Mr Hardeman’s lawyers are expected to present evidence allegedly showing Bayer’s efforts to influence scientists, regulators and the public about the safety of its products.

[Editor’s note: Read the GLP’s FAQ Is glyphosate (Roundup) dangerous? for a detailed discussion of glyphosate safety.]

“We are confident the evidence in phase two will show that Monsanto’s conduct has been appropriate and the company should not be liable for Mr. Hardeman’s cancer,” [Bayer] said. Bayer continues “to believe firmly that science confirms that glyphosate-based herbicides do not cause cancer.”

Another Roundup trial is scheduled to begin in California state court in Oakland on 28 March, involving a couple who claim Roundup caused their non-Hodgkin’s lymphoma.

Read full, original article: Weedkiller glyphosate a ‘substantial’ cancer factor

{{ reviewsTotal }}{{ options.labels.singularReviewCountLabel }}
{{ reviewsTotal }}{{ options.labels.pluralReviewCountLabel }}
{{ options.labels.newReviewButton }}
{{ userData.canReview.message }}

Related Articles

Infographic: Global regulatory and health research agencies on whether glyphosate causes cancer

Infographic: Global regulatory and health research agencies on whether glyphosate causes cancer

Does glyphosate—the world's most heavily-used herbicide—pose serious harm to humans? Is it carcinogenic? Those issues are of both legal and ...

Most Popular

vax-misinformation-main
Facts & Fallacies Podcast: Limit free speech to blunt social media misinfo?
Picture1
The FDA couldn’t find a vaccine safety crisis, so it buried its own research
ChatGPT-Image-May-7-2026-01_23_27-PM-2
Viewpoint: Will AI democratize personalized cancer treatment or fuel medical misinformation?
ChatGPT-Image-Apr-16-2026-02_56_53-PM
Financial incentives, over diagnosis, and weak oversight: Autism claims are driving up Medicare costs
ChatGPT-Image-May-12-2026-11_27_01-AM-2
AI likely to improve health care, research shows—but not for blacks and ethnic minorities
modi visit sikkim
Viewpoint: Indian PM wants farmers to switch to 50% organic. It would take at least 10 years, likely won’t work, and isn’t more sustainable
Screenshot-2026-04-22-at-12.21.32-PM
Viewpoint: Why the retracted Monsanto glyphosate study doesn’t change the science—the world’s most popular herbicide is safe 
newborn infant baby mother
Sharp rise in number of parents refusing newborn vitamin K shots, putting babies at 81-fold higher risk of severe bleeding
ChatGPT-Image-May-20-2026-04_53_21-PM-2
Viewpoint: Doctors can fight health misinformation — if hospitals let them
ChatGPT-Image-May-7-2026-12_32_36-PM
Viewpoint: The state of U.S. vaccine policy? Dismal nationally, but some states are stepping up.
Screenshot-2026-04-13-at-1.39.26-PM
Viewpoint: ‘Safer for children?’ Stonyfield yogurt under fire for deceptive organic marketing
Screenshot-2026-05-18-at-3.04.37-PM-2
Social media’s health advice red flags
Screenshot-2026-05-19-at-11.23.34-AM
West-originated vaccine disinformation sparks murders of health care workers across Africa
glp menu logo outlined

Get news on human & agricultural genetics and biotechnology delivered to your inbox.