Even moderate levels of arsenic in drinking water increases the risk for heart disease, a new study suggests. Arsenic is a naturally occuring element found in the earth’s crust. High concentrations of arsenic in groundwater pose a public health threat to millions of people worldwide, according to the study. To assess the risk from moderate exposure to arsenic, researchers studied nearly 12,000 men and women in Araihazar, Bangladesh, where groundwater is contaminated with arsenic.
