Proving Your Cancer Was Caused by Roundup: A Checklist

A cancer diagnosis is a life-altering event, filled with uncertainty and fear. When that diagnosis is linked to a product you trusted and used for years, like Roundup, it adds another layer of anger and confusion. Thousands of people across the country, particularly those with Non-Hodgkin’s Lymphoma (NHL), have filed lawsuits against Bayer (Monsanto’s parent company) alleging that the glyphosate-based herbicide caused their illness.

Winning a Roundup lawsuit requires more than just a diagnosis and a history of using the product. It requires building a strong, evidence-based case that directly links your cancer to your exposure. This process can feel overwhelming while you are also navigating medical treatments.

To help you understand what is needed, we have created a checklist of the key steps involved in proving your cancer was caused by Roundup.

Your Roundup Cancer Claim Checklist

Building a successful case against a corporate giant like Bayer requires a methodical and thorough approach. Each piece of evidence serves as a building block, strengthening the foundation of your claim.

✔️ Step 1: Document Your Roundup Exposure History

This is the cornerstone of your case. You must be able to demonstrate significant and prolonged exposure to Roundup. Simply saying you used the product once or twice is not enough. The goal is to create a detailed timeline of your usage.

What to Gather:

Employment Records: If you used Roundup as part of your job (e.g., landscaper, farmer, groundskeeper), gather pay stubs, W-2s, or employment contracts that prove you worked in roles requiring herbicide application.
Purchase History: Look for old receipts, credit card statements, or bank records showing purchases of Roundup or glyphosate products. Check records from hardware stores, garden centers, or agricultural suppliers.
Photographs or Videos: Do you have any photos or videos of yourself, your property, or your workplace where Roundup containers are visible in the background?
Written Exposure Log: Create a detailed written history. Note the years you used the product, the frequency of use (e.g., weekly, monthly), the locations where you sprayed (e.g., home garden, specific fields), and the typical amount used. The more detailed, the better.

Why It Matters: This evidence establishes a direct connection between you and the product. A long and consistent history of use is crucial for demonstrating a “dose-response” relationship—the idea that more exposure leads to a higher risk of harm.

✔️ Step 2: Obtain All Relevant Medical Records

Your medical history is the second pillar of your claim. These records will be used to officially confirm your cancer diagnosis and to rule out other potential causes.

What to Gather:

Diagnostic Reports: This includes pathology reports from biopsies that definitively diagnose your specific type of cancer, such as Non-Hodgkin’s Lymphoma or a related subtype.
Complete Medical Chart: Obtain your entire medical file from your primary care physician, oncologist, and any other specialists you have seen.
Treatment Records: Collect all records related to your cancer treatment, including chemotherapy, radiation, surgery, and medications.
Doctor’s Notes: These notes can provide context about your diagnosis, prognosis, and the physical and emotional toll the cancer has taken.

Why It Matters: Your medical records provide the official diagnosis needed for the lawsuit. They also allow medical experts to perform a “differential diagnosis,” a process where they analyze your health history to systematically rule out other common causes of your cancer, thereby strengthening the conclusion that Roundup was the substantial contributing factor.

✔️ Step 3: Consult with Medical and Scientific Experts

A Roundup case is a battle of scientific evidence. Your personal testimony is powerful, but it must be supported by the testimony of qualified experts who can explain the complex science to a jury. Your legal team will handle this step.

Who is Involved:

Oncologists: Cancer specialists who can testify about your specific diagnosis and prognosis.
Epidemiologists: Experts who study disease patterns in populations and can discuss the statistical link between glyphosate exposure and cancer rates.
Toxicologists: Scientists who can explain how glyphosate affects human cells at a biological level, causing DNA damage that can lead to cancer.

Why It Matters: Expert witnesses translate the science for the court. They connect the dots between the landmark 2015 IARC report (which classified glyphosate as “probably carcinogenic to humans”) and your individual case. Their testimony is essential for countering the arguments made by Bayer’s own team of scientists.

✔️ Step 4: Gather Evidence of the Product’s Dangers

A key part of the legal claim is proving that Monsanto/Bayer knew about the risks of Roundup and failed to warn consumers. Your attorney will use the discovery process to unearth internal company documents.

What to Look For (Your Lawyer’s Role):

The “Monsanto Papers”: These are internal company documents that have been made public through previous lawsuits. They include emails and memos that suggest the company may have ghostwritten safety studies and worked to discredit independent scientists.
Lack of a Warning Label: The product itself is a piece of evidence. The fact that Roundup containers have never included a cancer warning is central to the “failure to warn” argument.

Why It Matters: This evidence helps establish corporate negligence. It shows that the company prioritized profits over safety and actively concealed the dangers of its product from the public. This can not only help prove liability but also lead to punitive damages, which are intended to punish the company for its reckless behavior.

Why Working with an Experienced Attorney is Non-Negotiable

As you can see from this checklist, building a Roundup claim is not a simple task. It is a complex, document-intensive process that requires deep legal and scientific knowledge. Trying to take on a massive corporation like Bayer on your own is nearly impossible.

An experienced personal injury attorney specializes in this fight. At Walch Law, we know Bayer’s legal playbook and how to counter it. We will:

Manage the entire evidence-gathering process so you can focus on your health.
Hire and work with the nation’s leading medical and scientific experts.
Navigate the complex legal procedures and strict deadlines.
Build a compelling narrative that clearly shows how Roundup caused your cancer.
Fight aggressively to secure the maximum compensation you and your family deserve.

Contact Walch Law for a Free Roundup Case Evaluation

If you or a loved one has been diagnosed with Non-Hodgkin’s Lymphoma or another cancer after using Roundup, you may be entitled to significant compensation for your medical bills, lost income, and immense pain and suffering. Do not assume it is too late or that your case is not strong enough.

Contact the experienced Roundup lawsuit team at Walch Law today for a free, no-obligation consultation. We will review your history of Roundup use, discuss your diagnosis, and explain your legal options. Let us help you hold Bayer accountable and get the justice you deserve.