Bayer has faced tens of thousands of lawsuits alleging that Roundup, a glyphosate-based weed killer, causes cancer, particularly non-Hodgkin lymphoma. The company has set aside billions of dollars for settlements and agreed in 2020 to pay more than $10 billion to settle thousands of claims. Litigation continued through the mid-2020s, including a $2.1 billion jury verdict in 2025. But in 2026, the U.S. Supreme Court ruled that federal pesticide law preempts many state-law failure-to-warn claims involving Roundup, .a decision that was expected to block thousands of pending lawsuits, though some other types of claims could continue.
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