The number of cancer cases among rescue workers and responders to the terrorist attack at the World Trade Center on Sept. 11, 2001 is growing, CNN reports.
Some findings indicate that the number of cancer cases among 9/11 rescue workers and responders has doubled since last year.
Dr. Otis Brawley, the chief medical and scientific officer and executive vice president of the American Cancer Society, has raised questions about such year-to-year reports, though.
Brawley points out that even if the number of cases has actually doubled, cancer rates typically increase with age. He thus stresses the need to conduct additional and more accurate scientific research studies to determine the validity of that statistic.