Everyone knows that smoking is extremely dangerous for health. Nevertheless, the number of smokers throughout the world is constantly growing. Just imagine: over a billion people on our planet including kids and teenagers are regular smokers. Every year smoking causes more deaths than flight and automobile accidents together. It is the most widespread bad habit, as well as one of the most hazardous ones.

Why is inhaling of tobacco smoke so harmful? The answer is evident: it provokes a lot of dangerous and even fatal diseases. For example, it can trigger almost all types of cancer. The most frequent of them is lung cancer – about 90 percent of cases are caused by smoking. Besides, tobacco-related carcinogens affect vital internal organs including stomach, liver, kidney, and so on. Cigarette smoke influences the cardiovascular system, causing vasoconstriction and elevated blood pressure. This can lead to blood clots forming, which, in turn, can induce heart attacks and strokes.