4.7 Review

Occurrence and exposure assessment of glyphosate in the environment and its impact on human beings

Journal

ENVIRONMENTAL RESEARCH
Volume 231, Issue -, Pages -

Publisher

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.envres.2023.116201

Keywords

Glyphosate; Cancer risk; Herbicide; Pesticide; Environmental pollution

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This study aimed to review glyphosate occurrence and exposure since 2015, considering studies associated with environmental or occupational exposure and the epidemiological assessment of cancer risk. The results showed that herbicide residues were detectable in all spheres of the earth and studies on the population showed an increase in glyphosate concentration in biofluids. However, the reviewed epidemiological studies provided limited evidence for the carcinogenicity of glyphosate, which was consistent with the International Agency for Research on Cancer classification as a probable carcinogen.
Glyphosate is a broad-spectrum and one of the most widely used herbicides in the world, which has led to its high environmental dissemination. In 2015, the International Agency for Research on Cancer stated that glyphosate was a probable human carcinogen. Since then, several studies have provided new data about the environmental exposure of glyphosate and its consequences on human health. Thus, the carcinogenic effects of glyphosate are still under debate. This work aimed to review glyphosate occurrence and exposure since 2015 up to date, considering studies associated with either environmental or occupational exposure and the epidemiological assessment of cancer risk in humans. These articles showed that herbicide residues were detectable in all spheres of the earth and studies on the population showed an increase in the concentration of glyphosate in biofluids, both in the general population and in the occupationally exposed population. However, the epidemiological studies under review provided limited evidence for the carcinogenicity of glyphosate, which was consistent with the International Agency for Research on Cancer classification as a probable carcinogen.

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