A study published in the American Journal of Public Health shows that majority of Americans support a ban on menthol cigarettes, which numb the throat to allow smoke to penetrate the lungs more deeply, thus increasing the rate of addiction and harm.

http://www.upi.com/Health_News/2011/05/13/Ban-on-menthol-cigarettes-urged/UPI-24891305311186/
http://www.eurekalert.org/pub_releases/2011-05/mgh-aaa051211.php