Pesticides and Cancer: Study Reveals the Biological Mechanisms Behind an Environmental Health Risk

A new study, published in Nature Health, reveals a strong link between exposure to agricultural pesticides in the environment and the risk of developing cancer. By combining environmental data, a nationwide cancer registry, and biological analyses, researchers from the IRD, the Institut Pasteur, the University of Toulouse, and the National Institute of Neoplastic Diseases (INEN) in Peru have shed new light on the role of pesticide exposure in the development of certain cancers.

Pesticides are widely present in food, water, and the environment, often in the form of complex mixtures. Until now, it has been difficult to accurately assess their effects on human health, as most studies focus on isolated substances and experimental models that are far removed from real-world exposure conditions.

This new study adopts an innovative, integrative approach that accounts for the complexity of real-world exposures experienced by populations.

Peru, a relevant study site

The country is characterized by intensive agriculture in certain regions, a wide variety of climates and ecosystems, and significant social and territorial inequalities. Cancer has become a public health priority there, and levels of pesticide contamination in the population are cause for concern.