It takes about two days to get a cold after exposure to the virus. In this video, Larry Gooss, DO, a family practice doctor at Chippenham & Johnston-Willis Hospitals, explains how virus can continue to live on surfaces.
A RealAge answered. To prevent vitamin C deficiency, government guidelines recommend a daily dose of 90 milligrams (mg) for men, 75 mg for women. We recommend that you get 1,200 mg of vitamin C per day from food and supplements. This higher amount not only prevents deficiency but also helps prevent disease and needless aging.
Since only 10 mg of vitamin C is needed daily to prevent scurvy, the disease is rarely seen today. Even without signs of scurvy, a low intake of vitamin C can compromise many body functions, including the ability to rid the body of cholesterol and the immune system's ability to fight off infection and disease.he RDA for vitamin C is 75 mg daily for women and 90 mg for men, with an additional 10 mg for pregnant women and an additional 45 mg for women who are breast-feeding. The RDAs now indicate that smokers need at least 100 mg of vitamin C a day.