Concerns over the health risks associated with glyphosate, the active ingredient in Roundup weed killer, have intensified in recent years as lawsuits and scientific studies continue to raise questions about its safety. Glyphosate, first introduced by Monsanto in 1974 under the brand name Roundup, is now the most widely used herbicide globally and is present not only in gardens and lawns but also in food products consumed across the United States.
A significant number of legal cases have been filed against Monsanto—over 9,300 as of 2018—alleging links between Roundup exposure and various diseases. One high-profile case involved Dewayne Johnson, a California school groundskeeper who developed non-Hodgkin lymphoma after regular use of Roundup. In August 2018, a jury concluded that “Monsanto’s weedkiller was a substantial contributing factor in causing DeWayne ‘Lee’ Johnson’s cancer,” awarding him $289 million.
Health experts warn that exposure to glyphosate can occur through inhalation, ingestion of treated foods, or skin contact. According to Jeffrey Smith, author of Genetic Roulette: The Documented Health Risks of Genetically Engineered Food: “Symptoms of exposure to glyphosate include eye irritation, burning eyes, blurred vision, skin rashes, burning or itchy skin, nausea, sore throat, asthma and difficulty breathing, headache, lethargy, nose bleeds, and dizziness. Glyphosate and glyphosate-containing herbicides caused genetic damage in laboratory tests with human cells, as well as in tests with laboratory animals.“
The World Health Organization’s International Agency for Research on Cancer (IARC) classified glyphosate as a probable human carcinogen in 2017. Studies cited by IARC suggest increased rates of malignant tumors among animals exposed to glyphosate and potential genotoxic effects.
Individuals at highest risk include professional gardeners, landscapers, farmers, agricultural workers, herbicide applicators, and groundskeepers due to their frequent exposure. Homeowners are also cautioned about possible risks from chronic use.
Glyphosate is also recognized as an endocrine disruptor that can mimic estrogen. This has raised concerns about reproductive problems and certain cancers such as breast cancer among those exposed at higher levels.
Environmental impacts are another concern. Pesticide runoff from large-scale farms can contaminate water sources and contribute to issues like algae blooms due to nutrient release from decaying plants killed by herbicides.
In response to these concerns and growing resistance among weeds to glyphosate-based products—requiring heavier applications over time—some experts recommend using protective gear when handling herbicides or considering alternative weed control methods such as hand weeding or natural solutions like vinegar-based sprays.
Legal professionals advise individuals who believe they have suffered health effects from chronic Roundup exposure to consult both physicians and attorneys experienced with such cases.
As litigation continues against Monsanto regarding alleged health effects linked to Roundup use, public awareness campaigns stress the importance of understanding potential risks associated with common chemical exposures found in everyday environments.
