Air pollution may trigger appendicitis

Oct 05, 2009

A new study in CMAJ (Canadian Medical Association Journal) suggests that air pollution may trigger appendicitis in adults.

The study, conducted by researchers at the University of Calgary, University of Toronto and Health Canada, looked at 5191 adults admitted to hospital in Calgary, Alberta, Canada. Fifty-two per cent of admissions occurred between April and September, the warmest months of the year in Canada during which people are more likely to be outside.

The dominant theory of the cause of has been obstruction of the appendix opening, but this theory does not explain the trends of appendicitis in developed and developing countries. Appendicitis cases increased dramatically in industrialized countries in the 19th and early 20th centuries, then decreased in the middle and late 20th century, coinciding with legislation to improve air quality. The incidence of appendicitis has been growing in developing countries as they become more industrialized.

Using Environment Canada's air pollution data for Calgary, the researchers determined the levels of ozone, nitrogen dioxide and other air-borne pollutants along with temperature. They found correlations between high levels of ozone and nitrogen dioxide and the incidence of appendicitis between age groups and genders. More men than women were found to have the condition.

"For unexplained reasons, men are more likely than women to have appendicitis," write Dr. Gilaad Kaplan of the University of Calgary and coauthors. "Men may be more susceptible to the effects of outdoor air pollution because they are more likely to be employed in outdoor occupations," although they note that misclassifications of data could explain some of the difference.

While it is not known how may increase the risk of appendicitis, the authors suggest pollutants may trigger inflammatory responses. They recommend further studies to determine the link.

More information: http://www.cmaj.ca/press/cmaj082068.pdf

Source: (news : web)

Explore further: International team reveals barriers to public health data-sharing; proposes life-saving solutions

add to favorites email to friend print save as pdf

Related Stories

Air pollution may increase risk of appendicitis

Oct 06, 2008

Could there be a link between high levels of air pollution and the risk of appendicitis? New research presented at the 73rd Annual Scientific Meeting of the American College of Gastroenterology in Orlando, suggests a novel ...

Recommended for you

India to raise age for tobacco purchases, ban single sales

2 hours ago

Health campaigners Wednesday welcomed India's plans to raise the age for tobacco purchases to 25 and ban unpackaged cigarettes, hailing them as a major step towards stopping nearly one million tobacco-related deaths a year.

Americans are smoking less than ever

2 hours ago

The percentage of Americans who are smokers has fallen to an all-time low, now representing just 17.8 percent of the population, a study released Tuesday found.

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.