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Related Experiment Videos

The marginalization of hormesis.

E J Calabrese1, L A Baldwin

  • 1Department of Environmental Health Sciences, School of Public Health, University of Massachusetts, Amherst 01003, USA.

Toxicologic Pathology
|April 20, 1999
PubMed
Summary
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Hormesis, a dose-response relationship, was marginalized in toxicology due to historical associations and a lack of understanding of low-dose effects. This review explores the reasons behind hormesis

Area of Science:

  • Toxicology
  • Pharmacology
  • Biostatistics

Background:

  • The concept of hormesis, a non-linear dose-response relationship characterized by low-dose stimulation and high-dose inhibition, has not been widely adopted in mainstream toxicology.
  • Despite reproducible data, hormesis faced marginalization throughout the mid-20th century.

Purpose of the Study:

  • To review the historical foundations of bioassay interpretation and dose-response theories.
  • To identify and analyze the factors contributing to the marginalization of hormesis in toxicology.

Main Methods:

  • Historical review of toxicological principles and dose-response theories.
  • Analysis of the scientific and medical context surrounding hormesis.

Main Results:

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  • Hormesis was marginalized due to its association with homeopathy, leading to medical and pharmacological hostility.
  • An overemphasis on high-dose effects and a lack of appreciation for low-dose stimulatory impacts hindered hormesis acceptance.
  • Absence of evolutionary mechanisms and a lack of strong scientific advocacy against critics further contributed to hormesis' marginalization.

Conclusions:

  • The historical context, scientific biases, and lack of robust mechanistic explanations impeded the integration of hormesis into toxicology.
  • Re-evaluation of hormesis is necessary for a comprehensive understanding of dose-response relationships in toxicology.