background: residents of the northeastern region of iran experience high mortality rates from esophageal squamous cell carcinoma (escc). one etiologic factor might be exposure to high levels of polycyclic aromatic hydrocarbons, including benzo(|î±|)pyrene (bî±p). we examined whether food or water are the major sources of bî±p exposure in this population. materials and methods: we used a dietary...

INTRODUCTION Job exposure in agricultural workers often leads to respiratory impairment. AIM To assess the influence of exposure duration and smoking on chronic respiratory symptoms and ventilatory capacity in agricultural workers. METHODS A cross-sectional study covered 75 agricultural workers, compared with an equal number of office workers matched by age, exposure duration and smoking st...

Daily stressors may mediate the relation between exposure to disaster-related stressors and psychological and psychosocial distress among youth in disaster-affected countries. A sample of 427 Sri Lankan Sinhalese, Tamil, and Muslim youth (mean age = 14.5) completed a survey with measures of exposure to disaster-related stressors and daily stressors, psychological distress (posttraumatic stress,...

This study investigated the link between exposure to early life trauma, sensitivity to current daily stressors, and cocaine dependence. Individuals with (n = 105) or without (n = 53) cocaine dependence completed the Early Trauma Inventory and the Daily Hassles Scale. In comparison to controls, cocaine-dependent individuals reported almost twice as many daily hassles and perceived those hassles ...

Our recent study showed a dose-response relationship between environmental tobacco smoke (ETS) and the risk of early pregnancy loss. Smoking is known to affect female reproductive hormones. We explored whether ETS affects reproductive hormone profiles as characterized by urinary pregnanediol-3-glucuronide (PdG) and estrone conjugate (E1C) levels. We prospectively studied 371 healthy newly marri...

The CDC TDF2 study, conducted in partnership with the Botswana Ministry of Health, found that a once-daily tablet containing tenofovir disoproxil fumarate and emtricitabine (TDF/FTC, known by the brand name Truvada) reduced the risk of acquiring HIV infection by roughly 63 percent overall in the study population of uninfected heterosexual men and women. The strategy of providing daily oral anti...