Unsafe food is reported to cause 1.5 million deaths every year, with children being particularly at risk. The world health organization appears to be a source of this information, though the specifics of the risks and causes are not universally agreed upon, with some outlets noting chemical hazards as a major factor. The overall number of deaths due to foodborne illnesses may be higher than 1.5 million, as one outlet suggests that tainted food is killing more people than previously thought.