Epidemiology
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Despite evidence supporting an association between ambient air pollutants and cardiovascular disease (CVD), the roles of the physicochemical components of particulate matter (PM) and copollutants are not fully understood. This time-series study examined the relation between ambient air pollution and cardiovascular conditions using ambient air quality data and emergency department visit data in Atlanta, Georgia, from January 1, 1993, to August 31, 2000. ⋯ These findings provide evidence for an association between CVD visits and several correlated pollutants, including gases, PM2.5, and PM2.5 components.
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A recent meta-analysis concluded that there was no overall association between estrogen replacement therapy (ERT) and risk of epithelial ovarian cancer. However, several subsequent studies have suggested that long-term ERT could increase ovarian cancer risk. ⋯ Long duration of ERT use after menopause could increase the risk of epithelial ovarian cancer.