Extensive research carried out by Dr Iain Lang at the Peninsula Medical School looked at the relationship between smoking and psychological wellbeing. Dr Lang and colleagues used a measure of quality of life called the CASP-19 and found that smokers experienced lower average levels of pleasure and life satisfaction compared with non-smokers. The difference was even more pronounced in smokers from lower socio-economic groups.

In short - smoking doesn't make you happy.

Dr. Lang and his team carried out a study involving 9176 individuals aged 50 or over, who took part in ELSA, the English Longitudinal Study of Ageing. The studies for the research categorised people as never-smokers, ex-smokers and current smokers, and used household wealth as an indicator for socio-economic position.

Said Dr. Lang: "We found no evidence to support the claim that smoking is associated with pleasure, either in people from lower socio-economic groups or in the general population."

He added: "People may feel like they're getting pleasure when they smoke a cigarette but in fact smokers are likely to be less happy overall - the pleasure they feel from having a smoke comes only because they're addicted. These results show smoking doesn't make you happy - in fact, it is associated with poorer overall quality of life. Anyone thinking of giving up smoking should understand that quitting will be better for them in terms of their well-being - as well as their physical health - in the long-run."