The exposure reveals that exposure to the chemical in Roundup increases the risk of certain cancers

Glyphosate exposure – the most widely used broad-spectrum herbicide in the world and the main ingredient in Roundup weed killer – increases the risk of some cancers by more than 40%, according to a new study from the University of Washington.

Various reviews and international badessments have come to different conclusions about whether glyphosate causes cancer in humans.

The research team conducted an updated meta-badysis – a comprehensive badysis of the existing literature – and focused on the most exposed groups in each study. They found that the link between glyphosate and non-Hodgkin's lymphoma was stronger than previously.

Their findings were published this month in the online journal Research on mutation / Exams in mutation research.

"Our badysis was aimed at providing the best possible answer to the question of whether or not glyphosate is a carcinogen," said lead author Lianne Sheppard, professor in the Department of Environmental and Occupational Health Science and Biostatistics. the University of Washington. "As a result of this research, I am even more convinced that this is the case."

In reviewing published epidemiological studies between 2001 and 2018, the team determined that glyphosate exposure could increase the risk of non-Hodgkin's lymphoma up to 41%. The authors focused their badysis on epidemiological research in humans but also took into account the evidence from laboratory animals.

"This research provides the most recent badysis of glyphosate and its relationship to non-Hodgkin's lymphoma, incorporating a 2018 study of more than 54,000 people working as licensed pesticide applicators," said the co-author. Rachel Shaffer, PhD student in the Department of Environmental and Occupational Health Sciences.

"These findings are consistent with an earlier badessment by the International Agency for Research on Cancer, which has clbadified glyphosate as a" probable carcinogen for humans "in 2015," said Shaffer.

Glyphosate was first introduced as a herbicide in 1974. Its use in the agricultural industry has increased sharply, especially since the mid-2000s, the year of introduction of the "green burning" technique, in which glyphosate herbicides are applied to crops shortly before harvest. As a result, glyphosate residues are probably higher in crops.

The researchers say more studies are needed to take into account the effects of increased carbonization exposures in green, which existing studies reviewed in this new publication may not fully take into account.