ROUNDUP GUIDE · ILLNESS

Roundup and Non-Hodgkin Lymphoma

This is the illness at the center of the Roundup lawsuits. Nearly every person suing has it, and the scientific fight is over whether years of glyphosate exposure helped bring it on. Here is what it is, what the research says, and why dates matter so much in these cases.

For background, see What Is Glyphosate? and Is Roundup Dangerous?

This page provides general educational information only and does not constitute medical or legal advice. Discuss any diagnosis or health concern with a qualified medical professional.

Key Takeaways:
  • Non-Hodgkin lymphoma is the illness nearly all Roundup cases involve.
  • The claimed link rests on the WHO cancer agency finding and studies of farm workers. Other regulators disagree.
  • Most cases involve heavy exposure over years, not occasional use.
  • Your subtype, your exposure history and your dates are what a case turns on.

What Non-Hodgkin Lymphoma Is

It is a group of cancers that start in the lymph system, the network of nodes and vessels that runs your body's defenses. There are many types, including diffuse large B-cell and follicular lymphoma. The early signs are vague: swollen glands, tiredness that does not lift, weight coming off without trying, fevers, sweating at night. Plenty of other things cause those same signs, so it takes tests to tell.

The Claimed Link to Glyphosate

It traces back to 2015, when the World Health Organization's cancer agency called glyphosate probably cancer-causing. Part of what it drew on was research into farm workers and this exact illness. The US EPA looked at the evidence and did not reach the same view. That unsettled disagreement is the ground these lawsuits are fought on. More on the split is in Is Roundup Dangerous? and Glyphosate Lawsuits: EPA, Bayer and the Supreme Court.

Why Exposure History and Timing Matter

The cases that get anywhere usually involve people who handled the product regularly for years, not someone who sprayed a driveway a few times. Cancers like this one can also surface long after the exposure stopped.

That gap is why the dates matter. When you sprayed, what you sprayed, and when you were diagnosed all have to line up into something a court can follow. None of it decides a case alone, but together it is the case.

How This Fits Into the Litigation

These claims say the makers failed to warn about a cancer risk they knew about. The full legal picture is on Roundup Cancer Lawsuits, and where things stand now is on Roundup Lawsuit Updates. For how claims work generally, see How Lawsuits Work and What Evidence Helps a Lawsuit?

If You Have Been Diagnosed

A diagnosis is a medical matter first, and that belongs with your care team. If you also sprayed Roundup for years and are wondering whether your situation fits these cases, the records described above are what a free case review would look at.

Diagnosed with non-Hodgkin lymphoma after long-term Roundup or glyphosate exposure? You may qualify for a free, no-obligation case review on Lawsuit Center.

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David Meldofsky

About the Author

David Meldofsky is a California-licensed attorney and the founder of Lawsuit Informer, an educational platform focused on helping people understand lawsuits, consumer safety issues, and legal rights related to defective products and toxic exposures.

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Last Updated: September 6, 2026

Educational information only. Not legal or medical advice. No attorney-client relationship is formed.