Men who have been exposed to asbestos as part of their employment are at higher risk for colorectal cancer according to a study in the November 1, 2005 issue of tbe [*American Journal of Epidemiolog*y](http://aje.oxfordjournals.org/cgi/gca?gca=162%2F9%2F868&sendit=Get+All+Checked+Abstract%28s%29). Furthermore, those who had changes in their lungs caused by asbestos had an even higher risk, one that increased with the worsening asbestosis.
Heavy smokers who had also been exposed to asbestos were 36% more likely than similar male smokers who had no occupational exposure. Those with changes in their lungs caused by asbestos had a 54% increased risk.
Reseachers found 3,900 men who had worked with asbestos in their jobs among participants in the *Beta-Carotene and Retinol Efficacy Trial (CARET)* which was looking at the role of supplements to prevent lung cancer.
Read more about the study on [*Reuters Health*](http://today.reuters.co.uk/news/newsArticle.aspx?type=healthNews&storyID=2005-11-10T162423Z_01_HAR059014_RTRIDST_0_HEALTH-ASBESTOS-RISK-DC.XML)
Dr. Mark R. Cullen from Yale University School of Medicine, a study author, told *Reuters Health*.that colorectal screening for men with a history of asbestos exposure “should be aggressively pursued in view of their higher risk.”