So, if cancer, ageing skin and bad breath weren't enough of an insentive for you there is now this:-
Smokers who give up are much less likely to lose their teeth prematurely than those who do not kick the habit, research shows.
A team at the University of Newcastle upon Tyne studied cigarette smokers with chronic gum disease - which can lead to loss of teeth - over one year.
They found some symptoms were more likely to improve in the people who quit during the study period.
The research is published in the Journal of Clinical Periodontology.
Source BBC News