High lead exposure linked to hearing loss in youth
http://www.reuters.com/article/2011/12/22/us-high-lead-hearing-loss-idUSTRE7BL1T720111222
http://www.reuters.com/article/2011/12/22/us-high-lead-hearing-loss-idUSTRE7BL1T720111222
"Teens exposed to higher-than-normal levels of lead are more likely to have trouble hearing, suggests a new study that links the hearing problems to lead levels well below those considered "safe" by current standards."