Story perspectives

Study Links PAH Exposure to Early Breast Development

10/10/2025

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Summary

Story summary

Higher polycyclic aromatic hydrocarbon (PAH) exposure was associated with the timing of breast development—the study's only significant puberty outcome.
Researchers studied 6–16-year-old girls in the San Francisco Bay Area and analyzed 215 serum samples.
They measured PAH-albumin adducts and used generalized estimating equations (GEE) to assess the exposure–puberty link.
PAH-adducts appeared in nearly all samples, with variation by personal characteristics.

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Story summary

Higher polycyclic aromatic hydrocarbon (PAH) exposure was associated with the timing of breast development—the study's only significant puberty outcome.
Researchers studied 6–16-year-old girls in the San Francisco Bay Area and analyzed 215 serum samples.
They measured PAH-albumin adducts and used generalized estimating equations (GEE) to assess the exposure–puberty link.
PAH-adducts appeared in nearly all samples, with variation by personal characteristics.