235656 Assessing personal and dietary exposure of children and adults to bisphenol A

Monday, October 31, 2011

Sharifa Murray, MPH , Department of Health and Nutrition Sciences, CUNY Brooklyn College, Brooklyn, NY
Jean Grassman, MS, PhD , Department of Health and Nutrition Sciences, CUNY Brooklyn College, Brooklyn, NY
Bisphenol A (BPA) is found in a wide array of consumer products made from epoxy resins and polycarbonate plastics. Migration of BPA occurs when foods and beverages are in contact with the container materials. The endocrine disrupting properties of BPA have been implicated in adverse health effects such as heart disease, diabetes, liver problems, and obesity. For this study, data was obtained from the 2005-2006 National Health and Nutrition Examination Survey to compare the urinary excretion of BPA in adults and children. Possible contributors to BPA exposure, including food and beverage consumption, nutritional awareness, and smoking, and personal characteristics were examined. The population's mean BPA level of 2.10 ng/ml was well below the US Environmental Protection Agency's established tolerable daily intake. However, the median urinary BPA levels were significantly higher in younger children, males, low-income individuals, obese individuals, and Non-Hispanic Blacks. Among those under 30 years old, consumption of fruit drinks, soft drinks and being heavy smokers were significantly associated with excretion of BPA. Nutritional awareness was inversely related while soft drink consumption was associated with BPA for those over age 30. Bottled water consumption was inversely associated with BPA levels and canned tuna was not found to be associated with BPA, for all ages. Although the levels are below the tolerable daily intake, the endocrine disrupting properties of BPA provide reason for concern. Sources of exposure especially from nonfood items should be better identified to establish a clearer understanding of low dose effects.

Learning Areas:
Environmental health sciences

Learning Objectives:
Explain how humans are exposed to bisphenol A Explain bisphenol A’s endocrine disruptive properties Evaluate food and beverage consumption, nutritional awareness, and smoking for associations with bisphenol A exposure. Evaluate demographic factors associated with bisphenol A exposure. Compare the level of bisphenol A exposure between children and adults.

Keywords: Environmental Health, Child Health

Presenting author's disclosure statement:

Qualified on the content I am responsible for because: Under the direction of my Maters’thesis adviser, Dr. Grassman, I have been well guided as to how best to evaluate environmental health risks. My Master’s thesis was entitled “Examining Exposure to Bisphenol A by Age.” I used the NHANES data to explore the association between age and bisphenol A as well as the influence of food and beverage consumption, nutritional awareness, and smoking.
Any relevant financial relationships? No

I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.