Source: EPASource: EPA-Region 6Photo: H. Paul Cooper

HAT IS an environmental health hazard? The concept is complicated (Goldstein, 2002). Pollen from mountain cedar can be a life-threatening environmental health hazard to one person, and an occasional nuisance to another. Even relatively high exposure to a known carcinogen, such as benzene, does not cause cancer in all individuals. Susceptibility, or your chances of being affected, varies according to your age, state of health, your socioeconomic status, genetic makeup and numerous other poorly understood factors, such as stress (Smith, 2000). Exposure to multiple contaminants simultaneously is another poorly understood factor, as is the timing of exposure. For example, exposure to diesel exhaust has been shown to make individuals more likely to develop allergic symptoms when subsequently exposed to pollen or other allergens in the air (Pandya, 2002).

OR PURPOSES of this website, we are using the definition of “environmental health” proposed by the World Health Organization (WHO, 1993):

"Environmental health comprises those aspects of human health, including quality of life, that are determined by physical, chemical, biologic, social, and psychosocial factors in the environment."

HUS ANY external factor that negatively affects your health can be considered an environmental health “hazard." Common environmental health hazards include indoor and outdoor air pollution, and contaminated food and water. Less commonly discussed environmental health hazards include lack of sidewalks, crime, insufficient physical activity, poor nutrition, social isolation, noise, stress, and the lack of aesthetically pleasing living environments.