Herbicide

Roundup

Monsanto’s flagship product, Roundup, is the most widely used herbicide in the U.S. 

Its main ingredient, glyphosate, is the subject of ongoing research into its potential cancer-causing effects and other health problems.

Introduced

1974

Treats

Used as an herbicide

Side Effects

Risk of lymphoma

Illustration by Alexandra Li

Read more about Roundup

Image of a Bayer office representing the Roundup weedkiller cancer lawsuits.

Bayer Hit With $1.5 Billion Roundup Weed...

MedTruth Editors · November 30, 2023

This marks the fourth consecutive Roundup trial loss for Bayer in litigation that alleges the weedkiller causes cancer.

Legal Developments
Herbicide warning representing glyphosate cancer warning labels.

California Can’t Require Glyphosate Ca...

MedTruth Editors · November 29, 2023

The panel asserted that California can only mandate commercial speech if it satisfies the requirements of intermediate scrutiny.

News
Lawyers discussing trial representing the Bayer Roundup verdict under question because of a judge's feedback to the jury.

Bayer Accuses Judge of Misconduct in $17...

MedTruth Editors · November 21, 2023

Bayer has filed a motion to have a decision overturned because the trial judge improperly provided feedback to a Pennsylvania state court jury.

Legal Developments
A man gardening representing Bayer losing third consecutive Roundup trial in a $330 million verdict.

$330 Million Roundup Verdict Awarded in Latest Bayer Defeat

MedTruth Editors · November 15, 2023

After winning at trial in nine consecutive Roundup cases in 2022 and 2023, Bayer has now lost three straight cases.

Legal Developments
Image of Philadelphia skyline representing the Roundup verdict in favor of a man who said his exposure to Roundup caused non-Hodgkin's lymphoma.

Philly Jury Awards Roundup Plaintiff $175 Million

MedTruth Editors · November 10, 2023

This verdict ended Bayer & Monsanto’s winning streak of nine consecutive Roundup trials, all of which shared similar allegations that exposure to Roundup causes non-Hodgkin’s lymphoma.

Legal Developments
A court room similar to the one where the Roundup verdict against Bayer was delivered.

Bayer Loses First Roundup Trial Outside CA

MedTruth Editors · November 8, 2023

For the first time, Bayer has lost a Roundup trial outside of California and in its home state of Missouri.

Legal Developments
Man spraying weedkiller representing the Monsanto Roundup lawsuit alleging the weedkiller causes cancer.

Defense Witness in Roundup Trial Accused of Being a Mouthpiece for Monsanto

MedTruth Editors · October 18, 2023

Attorneys accused a 32-year employee of Monsanto of presenting biased evidence to protect the company.

Legal Developments
Man spraying lawn with weedkiller representing Bayer winning a Roundup trial against a man who claimed Roundup caused his non-Hodgkin's lymphoma.

Bayer Wins 9th Straight Roundup Trial

MedTruth Editors · October 13, 2023

The judge agreed with Monsanto that the plaintiff failed to present reasonable evidence that his Roundup use caused non-Hodgkin's lymphoma.

Legal Developments
Agricultural Silos representing the Monsanto Roundup cancer trial against a man who worked in the agrochemical industry.

Monsanto Says Ag Work Caused Plaintiff’s Cancer, Not Roundup

MedTruth Editors · October 4, 2023

A man who worked in the agrochemical industry used Roundup for 30 years and claims it caused his non-Hodgkin’s lymphoma.

Legal Developments
Man using weedkiller on a lawn representing the Roundup weedkiller cancer case in Missouri.

Latest Roundup Weedkiller Cancer Trial Begins in Missouri

MedTruth Editors · September 27, 2023

Two more Roundup cancer trials are set to begin in the next coming weeks.

Legal Developments
View of Philadelphia, Pennsylvania representing the new Roundup cases being tried in Philadelphia.

New Roundup Cases To Be Tried in Philadelphia

MedTruth Editors · July 26, 2023

The center of Roundup cancer cases has shifted from California and Missouri to include dozens of cases assigned in Philadelphia.

Legal Developments
Image of New York's Central Park representing the settlement between the state of NY and Bayer, manufacturer of Roundup.

Bayer Reaches $7 Million Roundup Advertising Settlement with NY

MedTruth Editors · June 28, 2023

Bayer will pay millions to resolve the claims that Roundup is safe and non-toxic without having enough evidence to support these claims.

Legal Developments
Bayer offices representing the Roundup cancer trials with Bayer's seventh consecutive win.

Bayer Wins 7th Consecutive Roundup Cancer Trial

MedTruth Editors · June 7, 2023

Roundup manufacturer Monsanto and Bayer have won the seventh trial in a row over claims that the weedkiller causes cancer.

Legal Developments
Image of a man spraying weedkiller representing the supreme court refusing to review a Roundup lawsuit.

Supreme Court Refuses Roundup Refund Review

MedTruth Editors · June 2, 2023

This $39 million settlement covers just one of several Roundup class action lawsuits filed by various consumer groups.

Legal Developments
Court evidence showing charts and graphs representing Monsanto evidence presented in Roundup trial

Monsanto Evidence Presented in Roundup Trial “Inaccurate”

MedTruth Editors · May 12, 2023

An epidemiologist said that a chart displayed by Monsanto attempting to prove Roundup doesn’t cause cancer is inaccurate.

Research + Findings
Doctor holding model of a liver representing a study that suggests an association between Roundup and juvenile liver damage.

Data Suggests Roundup Exposure Tied to Juvenile Liver Damage

MedTruth Editors · March 28, 2023

The study suggests an association between exposure to the herbicide Roundup and severe liver damage.

Research + Findings
Person using weedkiller spray on plants representing Bayer seeking a reversal of a Roundup case ruling.

Bayer Seeks Reversal of PA Roundup Case Ruling

MedTruth Editors · February 22, 2023

Despite a settlement between Monsanto and plaintiff David Schaffner, Jr. , Monsanto maintained the right to appeal the decision.

Legal Developments
Tree farm representing Mexican national suing over exclusion from Roundup Settlement.

Mexican National Sues Over Exclusion From Roundup Settlement

MedTruth Editors · February 3, 2023

Reyes-Hernandez claims she was illegally denied a Roundup weedkiller cancer claim settlement because she is not a U.S. citizen.

News
Chemical industry: Bayer smokestack representing a ruling granting Bayer Roundup case rehearing.

Bayer Granted Roundup Case Rehearing

MedTruth Editors · January 18, 2023

The ruling reopens a lawsuit filed by John Carson who used Roundup for 30 years and whose medical records show he was diagnosed with cancer in 2016.

Legal Developments
A woman gardening representing Monsanto winning Roundup cancer trial.

Monsanto Wins 6th Straight Roundup Cancer Trial

MedTruth Editors · November 23, 2022

This defense verdict marks the sixth consecutive trial win for Monsanto, after juries awarded multi-million-dollar damages to consumer plaintiffs in the first three Roundup trials.

Legal Developments
Picture of United States Environmental Protection Agency building representing the EPA withdrawing glyphosate risk assessment.

EPA Withdraws Glyphosate Risk Assessment

MedTruth Editors · October 5, 2022

Despite the withdrawal, a new risk assessment could take years to complete, and the agency says it will focus on the next registration review for Roundup instead.

News
Lawyers shaking hands representing the Roundup litigation push for settlement.

Lawyers for Roundup Plaintiffs Push for Settlement

MedTruth Editors · September 28, 2022

Attorneys want Roundup litigation resolved, either through a global settlement or a return of the cases.

Legal Developments
Someone spraying a plant with Roundup representing Bayer winning a Roundup cancer trial.

Bayer Wins Multi-Plaintiff Roundup Cancer Trial

MedTruth Editors · September 23, 2022

The Missouri trial included three plaintiffs who have non-Hodgkin’s lymphoma, allegedly because of Roundup exposure.

Legal Developments
The St Louis skyline from above representing the Roundup trial underway in Monsanto's hometown alleging Roundup causes cancer.

New Roundup Trial Underway in Monsanto’s Hometown

Guest Contributor · August 18, 2022

Three people who used Roundup and have since been diagnosed with different types of lymphoma are suing Monsanto. The trial takes place in St. Louis, the headquarters of Monsanto.

Legal Developments
Person holding a bottle of Roundup weedkiller representing the Roundup $45 Million Settlement.

Roundup Judge Approves $45 Million Settlement

MedTruth Editors · July 27, 2022

Monsanto was accused of failing to warn consumers about the potential health risks associated with glyphosate, the main active ingredient in Roundup weedkiller.

Legal Developments
Image of a couple gardening representing the Alberta and Alva Pilliod Roundup cancer case.

Supreme Court Declines To Review $87M Pilliod Roundup Case

MedTruth Editors · July 8, 2022

The Supreme Court turned away Bayer’s appeal of Alva and Alberta Pilliod's Roundup cancer case.

Legal Developments
A vehicle on a farm spraying plants with Roundup weedkiller containing glyphosate.

EPA Ordered To Reconsider Glyphosate Safety

MedTruth Editors · June 29, 2022

The EPA must reexamine its 2020 findings that glyphosate, the main active ingredient in Monsanto’s Roundup weedkiller products, is “not likely” to cause cancer.

Laws + Congress
Image of a judge holding gavel representing the Oregon judge blocking media coverage of Roundup cancer trial.

Judge Blocks Media Coverage of Roundup Cancer Trial

MedTruth Editors · June 27, 2022

The judge decided the media coverage might put pressure on the jury, resulting in jurors potentially dropping out.

Legal Developments
Supreme court building representing the DOJ recommending the Roundup cancer award stand.

Supreme Court Urged To Let $25M Roundup Cancer Award Stand

MedTruth Editors · May 25, 2022

The U.S. Department of Justice has recommended that the lower court verdict be allowed to stand.

Legal Developments
Weedkiller being sprayed on crops representing the former Monsanto CEO testifying in a Roundup cancer trial.

Former Monsanto CEO Testifies in First Roundup Trial Outside California

MedTruth Editors · May 20, 2022

This is the first trial in which former CEO of Monsanto Hugh Grant, who ran the company for 15 years, will testify.

Legal Developments
Image of a person spraying basil representing a Roundup judge criticizing proposed false advertising settlement.

Roundup Judge Criticizes Proposed False Advertising Settlement

MedTruth Editors · April 27, 2022

The settlement would provide payments to consumers who purchased certain Roundup products and resolve a lawsuit claiming that Monsanto failed to warn users.

Legal Developments
St Louis park bench and grass representing Bayer settling Roundup cancer claims.

Bayer Settles Dozens of Roundup Cancer Claims

MedTruth Editors · April 20, 2022

In March, Bayer announced that of approximately 138,000 cancer claims filed by individuals, 107,000 had been resolved or deemed ineligible.

Legal Developments
Person spraying tree with Roundup weedkiller representing Bayer petitioning a Roundup case.

Bayer Brings Second Roundup Verdict Petition to Supreme Court

MedTruth Editors · March 30, 2022

The company behind Roundup weedkiller, which thousands claim caused their cancer, is petitioning the nation’s high court to review a Roundup case for the second time.

Legal Developments
Image of the LA River representing Monsanto failing to issue warnings about PCBS in the waterways.

Los Angeles Sues Monsanto Over PCBs in City Waterways

MedTruth Editors · March 25, 2022

Los Angeles is accusing Monsanto of failing to issue a warning to the city about the hazards PCBs.

News
Illustration of judges in court representing Roundup attorneys possibly facing malpractice.

Roundup Attorneys May Face Malpractice Claims For Failing to Produce Experts

MedTruth Editors · January 28, 2022

Judge Chhabria’s order stated that plaintiffs must produce an expert to support their claim that Roundup caused their non-Hodgkin's lymphoma.

Legal Developments
Image of the White House representing the Supreme Court asking the Solicitor General about the Roundup cancer trial.

Supreme Court Asks Biden Admin To Weigh In on Roundup Appeal

MedTruth Editors · January 25, 2022

The U.S. Supreme Court asked the Solicitor General for the administration's views on the Roundup cancer trial that awarded plaintiff Edwin Hardeman $25 million.

Legal Developments
Image of a woman spraying Roundup representing a boy's Roundup cancer claims.

Bayer Settles Boy's Roundup Rare Cancer Claims

MedTruth Editors · January 19, 2022

A mother claims her son developed Burkitt’s lymphoma from years of Roundup exposure.

Legal Developments
Image of researchers in a lab representing cancer researchers criticizing glyphosate approval in the EU.

Cancer Researchers Criticize Glyphosate Approval in the EU

MedTruth Editors · December 9, 2021

Europe’s leading cancer researchers are questioning the EU's decision to issue a positive safety review for glyphosate.

Research + Findings
Image of a man spraying roundup weedkiller on grass.

California Couple’s $86 Million Roundup Award Refused Review

MedTruth Editors · December 6, 2021

Bayer petitioned to review the outcome of the third Roundup trial that resulted in a damage award of $86 million.

Legal Developments
Image of lawyers representing investor Roundup lawsuit against Bayer.

Judge Approves Investor Roundup Lawsuit Against Bayer

MedTruth Editors · November 3, 2021

Bayer failed to disclose the financial risks associated with the company’s 2018 acquisition of the Monsanto Corporation to its shareholders.

Legal Developments
Image of a woman spraying Roundup on plants.

Chronically-Ill Roundup Plaintiff Struggles to Testify

MedTruth Editors · October 1, 2021

A woman who suffers from significant memory loss struggled to answer questions posed by a Monsanto attorney in a Roundup trial.

Legal Developments
Image of a farmer spraying crops with Roundup representing the EPA report linking glyphosate to cancer.

Newly-Released Internal EPA Report Links Glyphosate to Cancer

MedTruth Editors · September 8, 2021

An internal EPA document from 2016 suggested that several studies reported elevated risks of non-Hodgkin's lymphoma associated with glyphosate exposure.

News
Image of Bayer headquarters representing Bayer petitioning the supreme court to reverse a Roundup verdict.

Bayer Petitions Supreme Court To Review 2nd Roundup Trial

MedTruth Editors · August 30, 2021

Bayer filed a petition to reverse a verdict that awarded a Roundup user $80 million in damages.

Legal Developments
Image of a golfer placing a ball on a tee in the grass, representing Gary Lindeblad's Roundup lawsuit.

Golf Pro Sues Monsanto, Claims Roundup Caused Cancer

James Parker · September 16, 2020

A Washington state golf pro who says Roundup caused his cancer has filed a lawsuit against Monsanto. 

Legal Developments
Image of a farmer spraying crops with Roundup

Court Panel Affirms Decision That Roundup Causes Cancer, but Slashes Record Jury Verdict

T.J. La · August 7, 2020

A jury verdict that found that Monsanto’s Roundup caused a groundskeeper’s cancer still stands under a California appellate decision issued last month, but the panel slashed the award.

Legal Developments
Illustration of a lawyer talking to a jury representing Bayer's settlement bid.

Judge Rebuffs Bayer’s Settlement Bid Over Proposed Scheme to Sidestep Jury

Lynne Higby · July 15, 2020

The case’s presiding judge questioned the lawfulness of a provision in the proposed $10 billion settlement, causing attorneys representing Roundup plaintiffs to back away from the proposed deal.

Legal Developments
Image of a Mexican flag representing Mexico banning glyphosate pesticides.

Mexico Bans Shipments and Use of Pesticide Glyphosate

Emily Shiffer · July 8, 2020

Mexico will ban all future imports of the pesticide glyphosate, citing scientific evidence that it is potentially toxic to human health and the environment.

News
Image of Roundup sprayed on crops representing Bayer renegs on Roundup cancer claims.

Bayer Renegs on Roundup Cancer Claim Settlements, Blames Coronavirus

Carah Wertheimer · April 8, 2020

Bayer is backing out of draft settlements with U.S. law firms representing more than 45,000 plaintiffs who allege that their non-Hodgkin’s lymphoma was caused by exposure to Monsanto’s Roundup.

Legal Developments
A photo of plants, representing the concept of Roundup causing cancer.

In 3 Months, 20,000 More Plaintiffs Claim Roundup Caused Cancer

Emma Schkloven · November 26, 2019

The number of plaintiffs claiming Roundup caused their cancer has more than doubled to 42,700 in the last three months.

Legal Developments
Photo of land in Hawaii to represent Maui Families Suing Monsanto for in-utero chemical exposure

Maui Families File Suit Against Monsanto for Chemical Exposure

Emma Schkloven · November 19, 2019

Two families in Maui, Hawaii, have filed a lawsuit against Monsanto, claiming the company’s use of pesticides and chemicals led to birth defects in their newborns. 

Legal Developments
An image of a man holding a bottle of Roundup herbicide after Monsanto Emails Uncovered Revealing Health Risks of Glyphosate

Internal Emails in Monsanto History Spark Questions of Ethics and Safety

Nicole Knight · October 16, 2019

Monsanto has been under scrutiny in recent years for the health risks of primary herbicide in Roundup, glyphosate. For years, the company paid their team of researchers and scientists to promote the safety of the product, but recent internal emails have revealed such an assertion cannot be made about the chemical.

News
A photo of a wheat field with a blue sky, representing EPA vs. California Prop. 65 in regards to Glyphosate

EPA, State of California Debate Labeling Glyphosate As Carcinogenic

Emma Schkloven · September 5, 2019

The Environmental Protection Agency (EPA) and the State of California have once again come down on opposite sides of the ongoing Roundup debate.

News
Photo of two farmers who once used Roundup discussing glyphosate alternatives for Bayer.

Bayer Invests Billions in Search of Glyphosate Alternatives

Emma Schkloven · August 14, 2019

Bayer, which purchased agrochemical corporation Monsanto, will invest $5.6 billion over the next 10 years into finding alternatives to its widely-used weed killer Roundup.

News
A photo of wheat representing the $2 billion Roundup verdict reduced.

$2 Billion Verdict Reduced in Roundup Cancer Case

Lauren Styx · July 29, 2019

In May, a jury awarded the amount of $2 billion in punitive damages and $55 million in compensatory damages to a California couple who developed cancer after years of exposure to Roundup weedkiller. Last week, the California judge significantly reduced the award in this historic Roundup cancer case.

Legal Developments
Photo of a field as it is sprayed with herbicide following study suggesting that Monsanto's Roundup may cause liver damage.

Researchers Find Liver Damage May Be A Risk of Roundup

Lauren Styx · June 10, 2019

A recent study by the University of California San Diego School of Medicine found a new risk of Roundup: liver damage. Levels of glyphosate, the primary herbicide in Roundup, were significantly higher in patients with nonalcoholic fatty liver disease than in patients with healthier livers.

Research + Findings
A photo of an agricultural field in relation to the debate between Monsanto and the EPA about Roundup, glyphosate and cancer.

Roundup and Cancer: EPA Sidesteps Science Claiming "No Link"

Carah Wertheimer · May 8, 2019

Last week, the U.S. Environmental Protection Agency (EPA) reaffirmed its 2017 assessment that glyphosate, the herbicide in Monsanto's Roundup weedkiller, does not cause cancer. Recent scientific studies and court cases say otherwise about the controversial herbicide.

Research + Findings
A photo of a cereal farmer's in field of wheat as blame falls to agrochemical giant in Monsanto Lasso France lawsuit.

Monsanto Held Liable for Cereal Farmer's Sickness in France

Nicole Knight · April 30, 2019

A French court sided with a cereal farmer who claimed Monsanto’s Lasso weedkiller made him sick, claiming the product’s label inadequately warned him of its risks.

Legal Developments
Photo of bowl of cheerios after weedkiller Roundup found in cereal, now concerns are raised about the cancer-causing nature of the herbicide.

Researchers Uncover Roundup in Cereal, But Does It Cause Cancer?

Nicole Knight · October 17, 2018

Researchers uncovered an alarming amount of the weed killer Roundup in cereal, raising food safety concerns about the presence of the cancer-causing chemical glyphosate.

Health Features
Photo of a vibrant soybean field where Monsanto's Roundup is not used while Monsanto's Roundup lawsuit continues.

Monsanto Lawsuit Debate Over Roundup's Link to Cancer Continues

Ashley Lombardo · October 18, 2017

Lawyers continue to debate allegations that glyphosate, the main ingredient in Monsanto's herbicide Roundup, can cause cancer.

Legal Developments
Science May Indicate Whether Roundup Causes Cancer

Does Roundup Cause Cancer?

Ashley Lombardo · August 29, 2017

Roundup, Monsanto's herbicide, is at the center of an ongoing controversy related to reports linking glyphosate exposure to cancer.

News