Urinary bisphenol A and hypertension in a multiethnic sample of US adults

J Environ Public Health. 2012;2012:481641. doi: 10.1155/2012/481641. Epub 2012 Jan 27.

Abstract

Background: Bisphenol A (BPA) is a common chemical used in the manufacture of polycarbonate plastics and epoxy resins, with >93% of US adults having detectable BPA levels in urine. Recent animal studies have suggested that BPA exposure may have a role in several mechanisms involved in the development of hypertension, including weight gain, insulin resistance, thyroid dysfunction, endothelial dysfunction, and oxidative stress. However, no previous human study has examined the association between markers of BPA exposure and hypertension.

Methods: We examined urinary BPA levels in 1380 subjects from the National Health and Nutritional Examination Survey 2003-2004. Main outcome-of-interest was hypertension, defined as blood pressure-reducing medication use and/or blood pressures >140/90 mm of Hg (n = 580).

Results: We observed a positive association between increasing levels of urinary BPA and hypertension independent of confounding factors such as age, gender, race/ethnicity, smoking, body mass index (BMI), diabetes mellitus and total serum cholesterol levels. Compared to tertile 1 (referent), the multivariate-adjusted odds ratio (95% confidence interval) of hypertension associated with tertile 3 was 1.50 (1.12-2.00); P-trend = 0.007. The association was consistently present in subgroup analyses by race/ethnicity, smoking status, BMI, and diabetes mellitus.

Conclusions: Urinary BPA levels are associated with hypertension, independent of traditional risk factors.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Benzhydryl Compounds
  • Diabetes Mellitus / epidemiology
  • Diabetes Mellitus / urine
  • Environmental Exposure
  • Estrogens, Non-Steroidal / urine*
  • Ethnic Groups / statistics & numerical data
  • Female
  • Humans
  • Hypertension / epidemiology*
  • Hypertension / urine*
  • Insulin Resistance
  • Male
  • Middle Aged
  • Obesity / epidemiology
  • Obesity / urine
  • Odds Ratio
  • Oxidative Stress
  • Phenols / urine*
  • Risk Factors
  • Thyroid Diseases / epidemiology
  • Thyroid Diseases / urine
  • United States / epidemiology

Substances

  • Benzhydryl Compounds
  • Estrogens, Non-Steroidal
  • Phenols
  • bisphenol A