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Updated: Oct 16, 2025

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Phthalates and attributable mortality: A population-based longitudinal cohort study and cost analysis.

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Phthalate exposure is linked to increased deaths from all causes and cardiovascular disease. This study quantifies significant mortality and economic losses, urging regulatory action for public health protection.

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Area of Science:

  • Environmental Health
  • Toxicology
  • Epidemiology

Background:

  • Growing evidence links phthalates to endocrine disruption and morbidity.
  • Previous studies have not directly assessed phthalate exposure's impact on mortality.
  • Ubiquitous environmental presence of phthalates necessitates mortality risk evaluation.

Purpose of the Study:

  • To investigate the association between phthalate exposure and mortality.
  • To quantify mortality and economic productivity losses attributable to phthalates in a specific age group.
  • To provide data for potential regulatory interventions.

Main Methods:

  • A nationally representative cohort of 5303 US adults (aged 20+) from NHANES 2001-2010.
  • Urine samples analyzed for phthalate metabolite concentrations.
  • Linkage to mortality data through December 31, 2015, with analysis in July 2020.

Main Results:

  • Increased all-cause mortality associated with high-molecular-weight (HMW) phthalate metabolites, particularly di-2-ethylhexylphthalate (DEHP).
  • Hazard ratios for continuous HMW and DEHP metabolites were 1.14 and 1.10, respectively.
  • Significant increase in cardiovascular mortality linked to a specific DEHP metabolite; estimated 90,761-107,283 attributable deaths and $39.9-47.1 billion in lost productivity in 55-64 year olds.

Conclusions:

  • Phthalate exposure is associated with increased all-cause and cardiovascular mortality in a US representative sample.
  • Societal costs are substantial, estimated at approximately $39 billion annually or more.
  • Urgent regulatory action is recommended, pending further mechanistic studies.