Identifying differences in U.S. exposure to ubiquitous carcinogens.

Area of Science:

• Environmental Health
• Cancer Epidemiology
• Toxicology

Background:

• Cancer remains a leading cause of death in the US, with persistent racial, ethnic, sex, and income disparities in incidence and mortality.
• Exposure to carcinogenic chemicals is a suspected factor driving these persistent cancer inequalities.

Purpose of the Study:

• To construct a novel database of chemical carcinogen exposure using national data.
• To analyze demographic differences in exposure to ubiquitous carcinogenic chemicals.
• To explore correlations between exposure levels, pathways, and cancer incidence rates.

Main Methods:

• Compilation of a novel database integrating biomonitoring and environmental data for 622 carcinogens.
• Calculation of demographically-differentiated exposure statistics where data permitted.
• Review of exposure pathways and associated cancer types for identified disparities.

Main Results:

• Data on direct or indirect exposure was available for only 37% of the assessed carcinogens.
• Significant differences in exposure were found for at least 28 carcinogens across demographic groups.
• Identified common household exposure pathways and explored correlations with cancer incidence.

Conclusions:

• Demographic disparities in exposure to carcinogenic chemicals exist and likely contribute to cancer inequalities.
• Significant data gaps hinder comprehensive analysis, emphasizing the need for improved carcinogen exposure monitoring.
• Further research is crucial to address limitations and inform targeted public health interventions.