Smoking causes breathing problems and lung cancer but also affects the heart and blood vessels. Indeed, smoking affects the vessels that supply blood to your heart, brain and other parts of your body. It reduces the amount of oxygen in your blood and damages blood vessel walls.
Smoking also can trigger an irregular heart rhythm and raise blood pressure, which are leading causes of stroke.
Cigarette smoke is also bad for the people around smokers.
People who inhale smoke (second-hand smoke or passive smoke) from others are at increased risk of disease and it is especially risky for children and babies. Do not forget that smoke can be found in hair, dresses and suits, tapestry and many other places in the house.
E-cigarettes, the battery-powered vaporiser that simulates the feeling of smoking, but does not burn tobacco, are not harmless and pending more evidence, it is desirable to limit use and uptake, in particular among children and young people.