Clothes, hair, of those, who have started to smoke recently, start to smell of tobacco. There appears an unpleasant smell from one’s mouth. Enamel starts to cover with spots and to change its color. Teeth become yellow. Immunity starts to weaken.

Scientists have found explanation why there appears tobacco dependence. The matter is that compounds that are contained in tobacco smoke break the balance of microelements in human brains. That is why people constantly want to smoke and they cannot get rid of bad habit.

Smoking really absorbs a person in its nets and it is very difficult to get out of them. Dependence forms quickly and imperceptibly. It is much easier to start to smoke than to stop. The major part of smoker regrets that they have once started to smoke. There are a lot of people, who want to refuse from smoking, but having such strong tobacco dependence it is not easy to do this.

First-time smoker’s face with another problem connected with respiratory tracts diseases. These may be inflammation of tunica mucosa of mouth and throat, harsh breathing, short breath, cough, or even asthma and bronchitis.

Those who have started to smoke not long ago, suffer from oxygen debt, because carbon monoxide penetrates in blood through lungs faster than oxygen does and, being absorbed by hemoglobin, blocks oxygen access to the organs of a person.