Risk Assessment of Combined Exposure to Multiple Chemicals at the European Food Safety Authority: Principles, Guidance Documents, Applications and Future Challenges

Irene Cattaneo, Alexander D. Kalian, Matteo R. Di Nicola, Bruno Dujardin, Sara Levorato, Luc Mohimont, Alexis V. Nathanail, Edoardo Carnessechi, Maria Chiara Astuto, Jose V. Tarazona, George E.N. Kass, Antoine K.Djien Liem, Tobin Robinson, Paola Manini, Christer Hogstrand, Paul S. Price, Jean Lou C.M. Dorne*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

14 Citations (Scopus)

Abstract

Human health and animal health risk assessment of combined exposure to multiple chemicals use the same steps as single-substance risk assessment, namely problem formulation, exposure assessment, hazard assessment and risk characterisation. The main unique feature of combined RA is the assessment of combined exposure, toxicity and risk. Recently, the Scientific Committee of the European Food Safety Authority (EFSA) published two relevant guidance documents. The first one “Harmonised methodologies for the human health, animal health and ecological risk assessment of combined exposure to multiple chemicals” provides principles and explores methodologies for all steps of risk assessment together with a reporting table. This guidance supports also the default assumption that dose addition is applied for combined toxicity of the chemicals unless evidence for response addition or interactions (antagonism or synergism) is available. The second guidance document provides an account of the scientific criteria to group chemicals in assessment groups using hazard-driven criteria and prioritisation methods, i.e., exposure-driven and risk-based approaches. This manuscript describes such principles, provides a brief description of EFSA’s guidance documents, examples of applications in the human health and animal health area and concludes with a discussion on future challenges in this field.

Original languageEnglish
Article number40
JournalToxins
Volume15
Issue number1
DOIs
Publication statusPublished - Jan 2023

Keywords

  • animal health
  • assessment groups
  • combined exposure
  • component-based approach
  • future challenges
  • harmonised methodologies
  • human health
  • multiple chemicals
  • risk assessment

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