Ask Dr. Bruce: Do vitamins prevent a cold? - NBC Southern California

    Ask Dr. Bruce: Do vitamins prevent a cold?

    Dr. Bruce Hensel answers viewers' questions about vitamins and how to recover from running a marathon in a report for the NBC4 News at Noon on Dec. 5, 2013. (Published Thursday, Dec 5, 2013) Dr. Bruce Hensel answers viewers' questions about vitamins and how to recover from running a marathon in a report for the NBC4 News at Noon on Dec. See More