The International Agency for Research on Cancer (IARC), in their latest study said that there was"convincing evidence" that glyphosate in Roundup can cause cancer in lab animals.

St. Louis-based Monsanto was not pleased with WHO conclusions, claiming that scientific data does not support their assumptions and urging the health watchdog to hold a meeting to explain the findings.

"We don't know how IARC could reach a conclusion that is such a dramatic departure from the conclusion reached by all regulatory agencies around the globe," Philip Miller, Monsanto's vice-president of global regulatory affairs, said in a brief statement released soon after the report was published.

The study, published Friday in the journal Lancet Oncology also said it found "limited evidence" that glyphosate was carcinogenic in humans for "non-Hodgkin lymphoma." The conclusion of the research was based on studies of exposure to the chemical in the United States, Canada, and Sweden that date back to 2001.