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How Long Has the Link Between Roundup Weed Killer
& Cancer Been Known?

There is evidence Monsanto knew that glyphosate, the active ingredient in its Roundup weed killer, could increase the risk of cancer as far back as 1983. Due to the results of a study published that same year, the U.S. Environmental Protection Agency (EPA) classified glyphosate as a “probable human carcinogen,” or cancer-causing substance, in 1985.
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Studies identifying a link between glyphosate-based herbicides and non-Hodgkin’s lymphoma (NHL) go back to at least 1986. A study published in the Journal of the American Medical Association [1] looked at the instances of non-Hodgkin’s lymphoma in farmers.

The researchers determined that participants who used glyphosate herbicides more than 20 days per year were 6 times more likely to develop non-Hodgkin’s lymphoma compared to non-farmers who did not use the weed killers. Those who mixed and applied herbicide on their own had an even greater increased risk, the study found.

In 2001, Canadian scientists drew similar conclusions when studying men who used insecticides and herbicides that are organophosphorus (compounds that contain phosphorous) in nature, including glyphosate. The researchers concluded that men who used these chemicals had a 73% increased risk of being subsequently diagnosed with non-Hodgkin’s lymphoma.

Related Article: Monsanto Roundup Lawsuit Update

How Does Glyphosate Cause Cancer?

In May 2014, scientists at the International Agency for Research on Cancer (IARC) confirmed the link between glyphosate exposure and non-Hodgkin lymphoma.

Looking at 44 individual studies published since 1980, the authors said that people exposed to glyphosate had double the risk of developing non-Hodgkin’s lymphoma compared to people who were not exposed to the chemical.

The researchers concluded that glyphosate causes genetic mutations in white blood cells, thereby weakening the body’s immune system and ability to fight off disease.

What are the Symptoms of Roundup Cancer?

Signs and symptoms of non-Hodgkin lymphoma may include:

  • Swollen lymph nodes in your neck, armpits, or groin
  • Abdominal pain or swelling
  • Chest pain, coughing, or trouble breathing
  • Persistent fatigue
  • Fever
  • Night sweats
  • Unexplained weight loss

How Long After Exposure to Roundup Does Cancer Develop?

A latency period is defined as the duration of time between your exposure to Roundup and the date of your diagnosis. In most cases, lymphoma associated with high-dose exposure to glyphosate takes at least 2 years to develop, according to a recent study.

How Long Does Glyphosate Stay in the Body?

Glyphosate and its metabolite AMPA can be accurately measured in blood and urine. However, because glyphosate and AMPA do not typically stay in the body for more than a few hours to a few days, these biomarkers can only help determine recent exposure to glyphosate.

Related Article: Glyphosate Litigation Update

How Do You Prove You Were Exposed to Roundup?

Your attorney will work with you to gather the necessary evidence, including receipts, partially used containers, invoices for landscaping work, and proof you worked in an industry where Roundup exposure is common.

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Have you or a loved one been unreasonably injured by a dangerous or defective consumer product?

If you have developed cancer as a result of glyphosate exposure, then contact Schmidt & Clark, LLP today for a free case evaluation. 

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