BROOKLYN - Rescue workers on 9/11 lost some lung function after inhaling the toxic dust, according to a study.

The study found an average of 13,000 rescue workers lost 10 percent of their lung function with little or no improvement after six years.

The long-term study was conducted on members of the New York Fire Department and published in the New England Journal of Medicine

The study could be critical to therapy and compensation efforts by the FDNY.