As of April 2026, the U.S. government has not required a warning label on Roundup weed killer. AP Photo/Haven DaleyChemical giant Monsanto has argued for years that if the U.S. Environmental Protection Agency approves a pesticide label without requiring a cancer warning, states cannot hold its manufacturer liable in court for failing to warn consumers about cancer risks. The U.S. Supreme Court agreed, in a ruling issued on June 25, 2026, though some members of Congress are taking steps to override that ruling.
截至2026年4月，美国政府尚未要求在农达除草剂上添加警示标签。美联社照片/哈文·戴利化学巨头孟山都多年来一直主张，如果美国环境保护局批准了农药标签而未要求添加癌症警示，各州就不能在法庭上追究其制造商未能警告消费者癌症风险的责任。美国最高法院在2026年6月25日发布的裁决中同意了这一观点，尽管一些国会议员正采取措施推翻该裁决。
Between 2009 and 2019, the EPA repeatedly concluded there is no evidence that glyphosate causes cancer in humans. The agency has, therefore, allowed glyphosate-based weed killers, including Monsanto’s Roundup, to remain on the market without a cancer warning on its label. That’s despite a 2015 report from the International Agency for Research on Cancer, a branch of the World Health Organization, that classified glyphosate as “probably carcinogenic to humans” based on “limited” evidence of cancer in humans from real-world exposure and “sufficient” evidence of cancer in experimental animals. A 2025 study had similar findings in lab rats.
2009年至2019年间，美国环保局多次得出结论，没有证据表明草甘膦会导致人类癌症。因此，该局允许基于草甘膦的除草剂（包括孟山都的农达）继续在市场上销售，且标签上无需添加癌症警示。尽管世界卫生组织下属机构国际癌症研究机构在2015年的一份报告中，基于现实世界暴露中人类癌症的“有限”证据和实验动物癌症的“充分”证据，将草甘膦归类为“对人类可能致癌”。2025年的一项研究在实验室大鼠中也得出了类似发现。
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