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Taking Vitamin C During Heavy Exercise Reduces Impact Of Common Cold

February 13, 2013: 12:00 AM EST
A Cochrane Review of the results of five clinical trials has found that participants undergoing heavy short-term physical stress suffered less from colds when taking vitamin C supplements. A regular dose of one gram or higher a day of vitamin C reduced the average duration of colds in adults by 8 percent and in children by 18 percent. Vitamin C cut the incidence of the common cold among marathon runners, school children in a skiing camp and soldiers during a winter exercise. One randomized trial among adolescent competitive swimmers found that taking vitamin C cut the duration of colds in half for males, but had no effect on females.
Harri Hemilä & Elizabeth Chalker, "Vitamin C for preventing and treating the common cold", Cochrane Review, February 13, 2013, © John Wiley & Sons, Inc.
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