Noah Stewart shelters in the closet just 15 minutes before an April 2011 tornado demolished his house. Wearing the helmet may have saved his life, one doctor says. Courtesy of the Stewart family hide caption toggle caption Courtesy of the Stewart family Shots - Health News CDC Says Helmets Are No Match For Tornadoes, But They Might Not Hurt May 3, 2012 Last year, tornadoes claimed the lives of more than 500 people in the U.S. Some safety advocates say protecting your head with a sturdy helmet could help reduce injuries and deaths. The Centers for Disease Control and Prevention says it's unaware of evidence in favor of helmets, but it acknowledges people may want to use them to protect themselves against head injuries.