And according to David Brenner of Columbia University: Recent research ... indicates that about 5 percent of the population — one person in 20 — is especially

And according to David Brenner of Columbia University: Recent research ... indicates that about 5 percent of the population — one person in 20 — is especially sensitive to radiation. These people have gene mutations that make them less able to repair X-ray damage to their DNA. Two examples are the BRCA-1 and BRCA-2 mutations associated with breast and ovarian cancer, but scientists believe many more such defects are unknown. http://www.npr.org/templates/story/story.php?storyId=126833083 http://www.npr.org/templates/story/story.php?storyId=1268330...