Multiple peer-reviewed studies have linked agricultural Roundup exposure to elevated risk of Multiple Myeloma — a cancer of plasma cells in the bone marrow. If you used Roundup regularly and have been diagnosed with Multiple Myeloma, MGUS that progressed, smoldering myeloma, or plasmacytoma, you may have a viable claim against Monsanto and Bayer.
Multiple Myeloma is a cancer of plasma cells — the antibody-producing white blood cells that live in the bone marrow. When plasma cells become malignant, they crowd out normal bone marrow function, produce abnormal proteins (M-protein) that accumulate in the blood and urine, and erode bone, leading to fractures and bone pain. The American Cancer Society estimates more than 35,000 Americans are diagnosed with Multiple Myeloma each year.
Multiple Myeloma is preceded by precursor conditions: Monoclonal Gammopathy of Undetermined Significance (MGUS) and Smoldering Multiple Myeloma. A Roundup case can be evaluated based on the active myeloma diagnosis even when the disease evolved through a precursor stage.
C — HyperCalcemia (elevated calcium levels)
R — Renal failure (kidney damage from light chains)
A — Anemia (low red blood cells, fatigue, shortness of breath)
B — Bone lesions, pathologic fractures, bone pain (often in the back, ribs, and hips)
Recurrent infections from suppressed immune function
Hyperviscosity, neuropathy, and other paraprotein-related symptoms
Multiple peer-reviewed studies of farmers, pesticide applicators, and other agricultural workers have found increased rates of Multiple Myeloma associated with cumulative glyphosate exposure. The Agricultural Health Study (AHS) and other large cohort analyses have specifically flagged this association.
Why The Diagnosis Detail Matters
Myeloma diagnosis depends on bone marrow plasma cell percentage, M-protein on serum and urine electrophoresis, free light chain ratio, imaging for bone lesions, and the CRAB / SLiM-CRAB criteria. Herb Borroto, M.D., J.D., reviews these reports personally to confirm the diagnosis fits and to build the causation story.
Plasma cells are mature B-cells. The same oxidative DNA damage and lymphocyte dysregulation that drives Non-Hodgkin Lymphoma after glyphosate exposure also drives Multiple Myeloma — which is why myeloma sits next to NHL in the agricultural cohort literature.
Plasma cells are differentiated B-cells. Whatever damages B-cells — like glyphosate — can drive plasma cell malignancy too.
Long-running cohort analyses of pesticide applicators have flagged elevated Multiple Myeloma rates with cumulative glyphosate exposure.
The Monsanto Papers show the company tracked these signals internally while publicly insisting Roundup was safe. We use that record — just like the tobacco industry record — in front of a jury.
Active Multiple Myeloma, smoldering myeloma that progressed or required treatment, plasmacytoma, or plasma cell leukemia.
Regular occupational or residential Roundup use. Multiple Myeloma cases are strongest in farmers, applicators, and other heavy-exposure workers.
Most states give 2 to 4 years from diagnosis (or, in some cases, from when the link to Roundup could reasonably have been discovered).
If a loved one used Roundup and died from Multiple Myeloma, surviving family members may bring a wrongful death claim.
Herb Borroto reviews bone marrow biopsies, M-protein studies, and imaging personally. Free, confidential, no obligation.
Get Your Free Case ReviewYes. Multiple Myeloma has a strong record in the agricultural cohort literature — including the long-running Agricultural Health Study — and is a recognized qualifying diagnosis in Roundup product liability cases. The strongest cases involve farmers, applicators, and other heavy-exposure workers, but residential users with documented Roundup use can also qualify. Herb Borroto, M.D., J.D., reviews bone marrow biopsies and M-protein studies personally.
Many Multiple Myeloma cases evolve through Monoclonal Gammopathy of Undetermined Significance (MGUS) or Smoldering Multiple Myeloma. The Roundup case is built on the active myeloma diagnosis — the date the disease became symptomatic or required treatment — even when the disease started as a precursor.
Yes. A solitary plasmacytoma — a single mass of malignant plasma cells, in bone or in soft tissue — is a recognized plasma cell cancer and qualifies for evaluation in the Roundup MDL. Plasma cell leukemia, a rare and aggressive form, also qualifies.
Three pillars: the IARC 2015 monograph classifying glyphosate as "probably carcinogenic to humans"; agricultural cohort studies (Agricultural Health Study and others) showing elevated Multiple Myeloma rates with cumulative glyphosate exposure; and the Monsanto Papers — internal company documents released through prior litigation. We combine these with your specific exposure history and the medical record Herb Borroto reviews.
Most Multiple Myeloma cases against Monsanto are framed as failure-to-warn — that Monsanto should have warned consumers. The Alvarez Law Firm pursues failure-to-warn claims, but our lead theory is strict product liability: that Roundup, as designed, is unreasonably dangerous and caused the myeloma regardless of what the label said. The same defective-product framework drove our $100M+ tobacco recoveries.
Other Roundup-linked cancers, our defective-product strategy, and the trial team behind every case.
The cancer most strongly tied to Roundup. Who qualifies, NHL subtypes, and filing deadlines.
DLBCL, Follicular, Marginal Zone, Mantle Cell — the B-cell subtypes Monsanto pays for.
CLL, SLL, and Hairy Cell Leukemia after glyphosate exposure.
The defective-product framework that drove our $100M+ tobacco recoveries — applied to Monsanto.
Alex Alvarez, Board Certified Civil Trial Lawyer — and Herb Borroto, M.D., J.D.
Plasma cell cancers in farmers and applicators have been linked to glyphosate exposure for years. We attack Monsanto under strict product liability — the same defective-product framework that has driven our $100M+ tobacco recoveries.
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All factual claims on this page about Multiple Myeloma, glyphosate, and Roundup litigation are supported by the following authoritative primary sources.
External references for educational purposes only. Citation does not imply endorsement of this firm by the cited organizations.
