Wednesday, July 15, 2009

Facts about tar

Above facts about tar.

Tar is the common name for the resinous partially combusted particulate matter produced by the burning of tobacco and other plant material in the act of smoking. Tar is purportedly[citation needed] the most destructive component in habitual tobacco smoking, accumulating in the smoker's lungs over time and damaging them through various biochemical and mechanical processes. Tar also damages the mouth by rotting and blackening teeth, damaging gums and blocking papillae and taste buds.

Tar includes the majority of mutagenic and carcinogenic agents in tobacco smoke (IARC, 1986).[citation needed] Polycyclic aromatic hydrocarbons (PAH), for example, are genotoxic via epoxidation.[citation needed]

There is a common misconception that the tar in cigarettes is equivalent to the tar used on roads.[citation needed] As a result of this, cigarette companies in the United States, when prompted to give tar/nicotine ratings for cigarettes, usually use "tar", in quotation marks, to indicate that it is not the road surface component. Tar is occasionally referred to as an acronym for total aerosol residue[1] although it's possible this is a backronym.[citation needed]

The European Union currently limits the tar yield of cigarettes to 10mg.

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