 Not only were there elevated lead levels in children, the study also found above-normal levels of cadmium, arsenic, and antimony throughout the population.Exposure to these toxic heavy metals is associated with kidney failure, cancer, and other problems.In an interview, the author of the study said he was "scandalised" by the breadth and depth of the contamination because he "found levels of lead in children that you don’t even see in the USA in adults who work with lead."