background and objectives: despite the increasing impact of heavy metal pollution in persian gulf due to urban growth and agricultural and petroleum activities, few studies have focused on the behavior and relationships of these pollutants in the biotic and abiotic components of aquatic environments. in this study, the amount of some metals (copper, iron, lead, cadmium, zinc and nickel) was det...

the marked shift in the patterns of drug use in iran, from opium smoking to injecting drug use, has led to serious health-related outcomes. this study was designed to explore characteristics of people who inject drugs (pwid) in tehran, iran. nine hundred and four pwid were recruited from treatment and harm reduction facilities, as well as drug user hangouts in public areas in tehran. participan...

concentrations of cu, pb, cr, cd, mn, ni, fe and zn were determined in the muscle samplesof sarotherodon melanotheron from the fosu lagoon in cape coast using atomic absorption spectrophotometer. the results showed that, metal concentration in the fish muscle was in the order mn > zn > fe > pb > ni > cd > cu > cr. mean concentrations of pb and cd in the fish exceeded the maximum tolerable limit...

Nanotechnology promises to improve the quality of human life, but it has also provoked concerns about potential adverse health effects on workers, the environment and consumers. Effective risk assessment and risk management of nanotechnology requires: 1) knowing how engineered nanoscale particles (NPs) can gain entry into the human body (routes of exposure); 2) knowing whether engineered NPs ca...

cancer is one of the three main causes of mortality in most human communities whose prevalence is being increased. a significant part of health budget in all countries has been allocated to treat the cancer, which is incurable in many cases. it has led the global health attitude to cancer prevention. many cancer‑related risk factors have been identified for which preventive recommendations have...