MedicineWorld.Org
Your gateway to the world of medicine
Home
News
Cancer News
About Us
Cancer
Health Professionals
Patients and public
Contact Us
Disclaimer

Medicineworld.org: Vitamin C offers little protection against colds

Back to society news Blogs list Cancer blog  


Subscribe To Society News RSS Feed  RSS content feed What is RSS feed?

Vitamin C offers little protection against colds




Vitamin C offers little protection against colds
Vitamin C containg food
Unless you run marathons, you probably wont get much protection from common colds by taking a daily supplemental dose of vitamin C, as per an updated review of 30 studies.

Conducted over several decades and including more than 11,000 people who took daily doses of at least 200 milligrams, the review also shows that vitamin C (ascorbic acid) does little to reduce the length or severity of a cold, as per the scientists at the Australian National University and the University of Helsinki.

However, they observed that people exposed to periods of high stress such as marathon runners, skiers and soldiers on sub-arctic exercises were 50 percent less likely to catch a cold if they took a daily dose of vitamin C.

For most people, the benefit of the popular remedy is so slight when it comes to colds that it is not worth the effort or expense, the authors say. It doesnt make sense to take vitamin C 365 days a year to lessen the chance of catching a cold, said co-author Harri Hemil, a professor in the Department of Public Health at University of Helsinki in Finland.

The review appears in the latest issue of The Cochrane Library, a publication of The Cochrane Collaboration, an international organization that evaluates medical research. Systematic reviews draw evidence-based conclusions about medical practice after considering both the content and quality of existing medical trials on a topic.

Since the discovery of vitamin C in the 1930s, controversy regarding its efficacy in treating ailments from lung infections to colds has surrounded it. In the 1970s, Nobel Prize-winning chemist Linus Pauling popularized its regular use. His book, Vitamin C and the Common Cold, encouraged people to take 1,000 milligrams of the vitamin daily.

The current recommended daily allowance of vitamin C is 60 milligrams. An eight-ounce glass of orange juice has about 97 milligrams of vitamin C.

Despite early mixed results and later evidence against its efficacy, charismatic Pauling became the worlds vitamin C champion. Pauling never recanted and never backed down, said Wallace Sampson, founding editor of the Scientific Review of Alternative Medicine and emeritus professor of medicine at Stanford University.

Regardless of the evidence against it, vitamin C remains popular because a number of people including those funding studies want to think that it works, said Sampson, who debated Pauling on the radio and in letters.

These days, there is less interest in studying vitamin C and the common cold, said Hemil, who has studied the vitamin for more than 25 years. The Cochrane Review was originally published in 1998 and updated in 2004 and this year. The latest update includes a single new study on the Vitamin C-cold connection.

However, scientists continue to examine vitamin C alone and in combination with other vitamins and substances, such as Echinacea, for its efficacy in preventing and treating diseases and conditions, including cancer. This is not necessarily a good thing, Sampson said. Its broadside quackery.

Hemil said he sees little use in further study for colds for adults. However, he would like to see more studies on vitamin C and colds in children and vitamin C and pneumonia. Vitamin C is not a panacea, but it is not useless either, Hemil said. Pauling was overly optimistic, but he wasnt completely wrong.


Posted by: Janet    Source




Did you know?
Unless you run marathons, you probably wont get much protection from common colds by taking a daily supplemental dose of vitamin C, as per an updated review of 30 studies. Conducted over several decades and including more than 11,000 people who took daily doses of at least 200 milligrams, the review also shows that vitamin C (ascorbic acid) does little to reduce the length or severity of a cold, as per the scientists at the Australian National University and the University of Helsinki.

Medicineworld.org: Vitamin C offers little protection against colds

Asthma| Hypertension| Medicine Main| Diab french| Diabetes drug info| DruginfoFrench| Type2 diabetes| Create a dust free bedroom| Allergy statistics| Cancer terms| History of cancer| Imaging techniques| Cancer Main| Bladder cancer news| Cervix cancer news| Colon cancer news| Esophageal cancer news| Gastric cancer news| Health news| Lung cancer news| Breast cancer news| Ovarian cancer news| Cancer news|

Copyright statement
The contents of this web page are protected. Legal action may follow for reproduction of materials without permission.