College students are not immune to the pull of cigarette ads.

In a Pittsburgh study that lasted three weeks and included 134 students (smokers and non-smokers) aged 18 to 24 years old, researchers found the students' intentions to smoke increased by an average of 22 percent when they were presented with a pro-smoking media message. Furthermore, they discovered one cigarette ad could influence students for up to seven days; however, the smoking intentions did decrease with each passing day.

"The results suggest that positive media messages about smoking are likely to influence behavior even if opportunities to smoke occur infrequently," said study co-author Steven Martino.

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