394,236,877 are cigarettes smoked in one day all over the world. 6 trillion cigarettes are smoked every year. 1.1 billion and 100 million, equal to 1/3 of the global population are current smokers. 3,464,481 are the deaths caused by smoking this year, almost one victim every 10 seconds. Cigarettes became the leading cause of avoidable death, killing 60 million people in half a century, causing more deaths than between the two world wars.
It can be seen that cigarette smoking can cause various diseases such as heart disease, emphysema, lung cancer in smokers unlike non-smokers. This does not discourage smokers who continue to maintain this habit.
Each cigarette contains: tobacco, which is obtained from the leaves of the homonymous plant; nicotine that when aspirated reaches the brain in eight to ten seconds and acts on the nervous circuits inducing addiction (today it is recognized, like cocaine, alcohol and hallucinogens, among the psychoactive substances capable of inducing physical and psychological dependence); carbon monoxide, a gas that derives from the incomplete combustion of tobacco and causes less nutrition of the tissues of the human body; irritants that accumulate in the bronchi and finally carcinogenic substances, causes of many damages caused by cigarette smoke.
It can be observed that all these components are harmful substances.
Smokers have their reasons, good or bad, for continuing to smoke and harming their bodies, but even non-smokers are subject to some health risks from secondhand smoke.
Passive smoke is that which is involuntarily inhaled by people who live in contact with one or more active smokers and is the main pollutant in closed environments; when a cigarette is smoked, the smoke that develops is of two types: the central one, mainly breathed by the smoker himself, and the lateral one, i.e. the smoke that is released into the air, causing very serious damage such as respiratory diseases but also a considerable risk for coronary heart disease and heart attacks by 20% (mainly due to nicotine and carbon monoxide).
All this information makes us think a lot about how much damage a habit can cause, not only to the smoker himself, but also to his family and the people who live around him.