Registration of an herbicide is not a one-time event. In fact periodic reviews are required and may take years to complete. The data must meet current scientific standards. In evaluations spanning four decades, the overwhelming conclusion of experts worldwide has been that glyphosate-based Roundup® brand products, when used according to label directions, do not present an unreasonable risk of adverse effects to humans, the environment, or pets.
Regulatory authorities around the world continually review the safety of glyphosate and have found no evidence of carcinogenicity in humans. The U.S. Environmental Protection Agency (EPA) conducts a risk assessment to evaluate proposed uses of any pesticide, including glyphosate. In addition, the European Commission, Health Canada and many other regulatory bodies and science organizations, including the World Health Organization, have reviewed data on glyphosate and confirmed its safety.
The most recent comprehensive review was conducted by the European Commission's Health and Consumer Protection Directorate-General for the re-registration of glyphosate in Europe. Six data sets from multiple companies and comprised of hundreds of regulatory studies and publications were included in this review, including over 300 separate toxicology studies.
These data consistently demonstrate no evidence for developmental and reproductive toxicity, carcinogenicity, genotoxicity, endocrine disruption potential, neurotoxicity and immunotoxicity. Monsanto encourages anyone who wants to know more about glyphosate safety to look at the conclusions reached by regulatory authorities in countries that have rigorously considered all available data, published and unpublished, in a comprehensive evaluation. View Key Publications Related to Glyphosate and Non-Carcinogenicity.