New study links 1 in 5 deaths in Bangladesh to arsenic in the drinking water

Between 33 and 77 million people in Bangladesh have been exposed to arsenic in the drinking water -a catastrophe that the World Health Organization has called "the largest mass poisoning in history." A new study published in the current issue of the medical journal The Lancet provides the most complete and detailed picture to date of the high mortality rates associated with this exposure, which began with the widespread installation of tube wells throughout the country 30 years ago -a measure intended to control water-bourne diseases.

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