Can Zinc shorten the length of the common cold?
Posted by Alana Wilson on 2/10/2012 12:28:28 PM
A new study found that zinc can shorten the common cold by 42%.
Effect of zing dosage
The use of zinc to treat the common cold has been researched since the early 1980s when its beneficial effects were first observed. However, research trials to date have had mixed results.
A new study has re-examined these trials to see if the size of the dosage of zinc could explain these conflicts. It found that in trials where people consumed more than 75 mg of zinc daily, the duration of colds was significantly reduced. The highest reduction was found from zinc acetate, where the pooled results of these trials showed that the duration of colds could be reduced by 42%. Lower dosages of zinc were found to have no effect.
Zinc mining in Canada
Canada is an important producer of zinc and produces 6.5% of the world’s total supply of refined zinc. In 2009 there were 701,828 tonnes of zinc in concentrate produced at eight mines in Canada located in Newfoundland and Labrador, Nova Scotia, New Brunswick, Quebec, Ontario, Manitoba, and British Columbia. 
Zinc is mainly used to galvanize iron and steel products to prevent them from rusting and corroding. Zinc is also used to make die-cast products and is an essential ingredient in brass.
Zinc is also important in human health and a deficiency of zinc is responsible for the deaths of 450,000 children per year under the age of five. The International Zinc Association is working with the United Nations Children’s Fund (UNICEF) to fund zinc supplementation programs around the world.
Zinc Saves Kids, Zinc Saves Kids, 2011.
1 Hemila, H., Zinc Lozenges May Shorten the Duration of Colds: A Systematic Review. The Open Respiratory Medicine Journal, 2011. 5: p. 51-58.
2Canada, Natural Resources Canada [NRC]. Zinc. Canadian Minerals Yearbook 2009 [cited 2011 October 12]; Available from: http://www.nrcan.gc.ca/mms-smm/busi-indu/cmy-amc/2009revu/zin-zin-eng.htm.
3International Zinc Association. Health. 2011 [cited 2011 October 12]; Available from: http://www.zinc.org/health.