Smoking is highly addictive with 1 in 4 adults in the UK smokers. Some may find these images disturbing.
Graphic pictures are to be included on all cigarette packets by October 2009 warning of the dangers of smoking, such as this one pointing out that smokers die young.
The number of women smoking during pregnancy has been falling, but still stands at 17%.
People who smoke can suffer painful deaths with tumours one of the established risks.
Lung disease is the most common form of death for smokers, contributing to the 106,000 UK deaths a year from smoking.
Smoking can cause problems such as impotence. Couples trying to get pregnant are advised not to smoke.
Smoking can help clog arteries, increasing the risk of heart attacks and strokes.
Research has shown second-hand smoke, a combination of smoke from the burning tip and that exhaled by the smoker, can cause death. Children are particularly susceptible.