Vitamin C

Most of us think of Vitamin C as an immunity booster during cold and flu season. But the most well-documented benefit of Vitamin C in the human body is actually for healing wounds, creating scar tissue, and keeping the walls of blood vessels intact. Philippe Hujoel says the global standard for how much Vitamin C a person should consume needs an update, Hujoel is a professor of oral health at the University of Washington. (Segment produced by Sam Faulconer)