Smoking causes lung cancer.
Ranked highest in unaided recall among all the Australia warnings, by those who indicated they were aware of the information on the front of the pack. 34% of respondents recalled the message, unaided (38% of smokers and 42% of recent quitters). 11% of smokers and 14% of recent quitters chose this warning as “most effective at discouraging people from smoking.” See "Evaluation of the Effectiveness of Graphic Health Warnings on Tobacco Product Packaging," pp. 66, 108-109.
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