“This case study is a masterclass in scientific reasoning," said Brugel. "They identify a cluster, associate it with overexposure to pesticides, obtain transcriptomic and epigenetic data, compare them, notice they are different, generate a hypothesis and open up a new avenue." Not only did this study identify several hundred areas nationwide that had an increased risk of cancer due to environmental pesticide exposure, but it also offered an explanation for the mechanisms by which these substances can combine to subtly promote the development of cancers in certain organs.”
https://www.lemonde.fr/en/environment/article/2026/04/01/pesticides-and-cancer-for-the-first-time-researchers-find-a-connection-at-the-national-level_6752016_114.html
https://www.lemonde.fr/en/environment/article/2026/04/01/pesticides-and-cancer-for-the-first-time-researchers-find-a-connection-at-the-national-level_6752016_114.html

Pesticides and cancer: For the first time, researchers find a connection at the national level
French researchers have developed a model to map pesticide exposure across Peru to reported cancer clusters. They demonstrate a 'robust spatial association' between these chemicals and increased cancer incidence rates in over 400 areas.