9 Higher menthol levels provide more pronounced flavoring effects, with levels as high as 2% reported. 5–8 To achieve a slight menthol effect (the perception of menthol flavor and cool sensation) in cigarette smoke, the amount of menthol added to tobacco filler is reported to be 0.1%–0.2% (1–2mg/g of tobacco filler) for a weak effect.
Menthol has been added in various amounts to cigarettes since the 1920s. 3 Menthol properties may also mask symptoms of respiratory disease, potentially leading to delays in medical treatment and thereby suppressing motivation for cessation. Menthol has a distinctive flavor and cooling properties that readily transfer to the mainstream smoke during combustion these properties have been suggested to facilitate initiation of cigarette use or discourage quitting by facilitating ease of use and depth of smoke inhalation.
1 In 2010–2011 approximately 30% of current smokers in the United States reported their usual cigarette type as menthol. Recent reports indicate that, after a slight decline in 20, menthol cigarette market share in the United States rose to 32 percent in 2011. Menthol is a permitted characterizing flavor in cigarettes by the Federal Food, Drug, and Cosmetic Act.
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