Tobacco use is one of the main risk factors for a number of chronic diseases, including cancer, lung diseases, and cardiovascular diseases. Despite this, it is common throughout the world. A number of countries have legislation restricting tobacco advertising, and regulating who can buy and use tobacco products, and where people can smoke.


Key facts


  • Tobacco kills up to half of its users.

  • Second-hand smoke kills

  • Tobacco kills nearly 6 million people each year. More than five million of those deaths are the result of direct tobacco use while more than 600 000 are the result of non-smokers being exposed to second-hand smoke. Unless urgent action is taken, the annual death toll could rise to more than eight million by 2030.

  • Nearly 80% of the world’s one billion smokers live in low- and middle-income countries.



Major cause of death, illness and impoverishment


The tobacco epidemic is one of the biggest public health threats the world has ever faced, killing nearly six million people a year. More than five million of those deaths are the result of direct tobacco use while more than 600 000 are the result of non-smokers being exposed to second-hand smoke. Approximately one person dies every six seconds due to tobacco, accounting for one in 10 adult deaths. Up to half of current users will eventually die of a tobacco-related disease.


Tobacco users who die prematurely deprive their families of income, raise the cost of health care and hinder economic development.

In some countries, children from poor households are frequently employed in tobacco farming to provide family income. These children are especially vulnerable to “green tobacco sickness”, which is caused by the nicotine that is absorbed through the skin from the handling of wet tobacco leaves.


Second-hand smoke kills


Second-hand smoke is the smoke that fills restaurants, offices or other enclosed spaces when people burn tobacco products such as cigarettes, bidis and water pipes. There are more than 4000 chemicals in tobacco smoke, of which at least 250 are known to be harmful and more than 50 are known to cause cancer.


  • In adults, second-hand smoke causes serious cardiovascular and respiratory diseases, including coronary heart disease and lung cancer. In infants, it causes sudden death. In pregnant women, it causes low birth weight.

  • Almost half of children regularly breathe air polluted by tobacco smoke in public places.

  • Over 40% of children have at least one smoking parent.

  • Second-hand smoke causes more than 600 000 premature deaths per year.

  • In 2004, children accounted for 28% of the deaths attributable to second-hand smoke.

Every person should be able to breathe tobacco-smoke-free air. Smoke-free laws protect the health of non-smokers, are popular, do not harm business and encourage smokers to quit.

Over 1 billion people, or 16% of the world’s population, are protected by comprehensive national smoke-free laws.



Gradual killer


Because there is a lag of several years between when people start using tobacco and when their health suffers, the epidemic of tobacco-related disease and death has just begun.

Tobacco caused 100 million deaths in the 20th century. If current trends continue, it may cause one billion deaths in the 21st century.

Unchecked, tobacco-related deaths will increase to more than eight million per year by 2030. More than 80% of those deaths will be in low- and middle-income countries.