I stand corrected about the labels!
OTTAWA, Canada (CNN) -- Graphic warning labels on cigarette packages in Canada have been effective in discouraging smoking, according to a study by the Canadian Cancer Society.

Fifty-eight percent of smokers interviewed in the study said full-color pictures of how cancer affects the mouth, lungs, heart and brain had made them think more about the health effects of smoking.

The warnings were so effective that 44 percent of the smokers polled said the new warnings increased their motivation to quit smoking. And 38 percent of smokers who attempted to quit in 2001 said the new warnings were a factor in motivating them to try to quit.

The full-color, picture-based warnings cover half of the front and back of each package of cigarettes. They include pictures of a diseased mouth, a lung tumor, a brain after a stroke, a damaged heart, and a limp cigarette that warns of impotence. Warnings inside each package offer tips on quitting.

The warnings were launched about a year ago and replaced black-and-white text messages that covered about 35 percent of each package, similar to cigarette package warnings in the United States.

Full text: http://www.cnn.com/2002/HEALTH/01/09/canadian.cigarettes/