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Does Vitamin C Help in Cold Prevention?

Does Vitamin C Help in Cold Prevention?

With the cold and flu season coming in hard for the country, health experts are warning Australians to always be on heightened alert for symptoms of cold and flu. This after data show that three times as many people have been diagnosed with the flu virus so far this year, compared to the same period in previous years.

Just in March this year, more than 10,000 people have already been diagnosed with the flu. That number is very high compared to last year's at only 3,173 reported cases. 

Authorities are warning people to always be careful as not to contract the virus. Some tips include: 

  • Regularly washing your hands
  • Avoiding crowds and sick people
  • Disinfecting surfaces
  • Staying warm and dry
  • Reducing stress
  • Exercising regularly
  • Eating healthy

There has been much interest in the use of large doses of vitamin C to prevent the common cold.  There have been many placebo-controlled trials that have examined the effects of vitamin C supplementation on the prevention as well as the treatment of colds.  The results were evaluated and showed a distinction on the incidence of colds between two groups:

  • Regular supplementation with vitamin C did not reduce the incidence of colds in the general population
  • Supplementation with vitamin C halved the incidence of colds in those who were undergoing physical stress such as marathon runners, skiers or soldiers in subarctic conditions
  • A benefit of regular supplementation with vitamin C was also seen in the duration in colds for children more so than in adults
  • Evaluation of the research also shown that there was no significant effect of vitamin C supplementation in which vitamin C was administered after cold symptoms occurred

Even though failure of Vitamin C supplementation to reduce the incidence of colds among the general population, Vitamin C is still a very useful to combat both cold and flu. The study shows that Vitamin C reduces the duration of cold, as well as the severity of the condition. And because of low cost and safety, it may still be worthwhile to continue using Vitamin C and Vitamin C-rich food for therapeutic purposes against colds and flu.

Vitamin C-rich Foods

Vitamin C-rich foods

The Recommended Dietary Allowance (RDA) for vitamin C per day is 90mg for adult males and 75mg for adult females.

  • Orange juice
  • Grapefruit juice
  • Kiwifruit, gold
  • Orange, 1 medium
  • Grapefruit
  • Strawberries
  • Tomato, 1 medium
  • Sweet red pepper
  • Broccoli, 1/2 cup, cooked
  • Potato, 1 medium, baked
  • Spinach, 1 cup, raw

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Topic: Vitamins and Supplements, Colds & Flu

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