Tobacco smoking

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Tobacco
Two cigarettes
The "No Smoking" symbol. This sign is put up in public areas to show that smoking is not allowed there.

Tobacco smoking or cigarette smoking is when a person breathes in and breathes out smoke from a cigarette using a lighter. Smoking is harmful to the lungs, and can cause many diseases such as cancer, pneumonia, and many others. When a user smokes, the chemicals from inside the cigarette damage the body, including the smoke, making the person more likely to get certain diseases.

In public areas such as arenas or police stations, smoking is usually not allowed. This is because the smoke from the cigarette goes into the air, and can be inhaled by other people. Signs have to be placed in public areas to stop people from smoking while there. If a man was smoking while walking near a police station and he avoided the sign, he would have questions asked to him or be arrested by police.

Smoking can cause heart attacks, if continued for years of using tobacco or any other powders used for smoking, including marijuana. Smoking can cause mental, as well as physical health problems, such as schizophrenia, depression, mood swings and many others. If a smoker continues smoking for years, or even decades, their health will worsen. Smoking can cause coughing, or inflammation (swelling) of the throat or lungs. The alveoli are air sacs via which breathing occurs, but they will become badly damaged. Once inhaled, the tobacco smoke travels down the trachea and enters the lungs. When entering the body, the smoke would damage the cilia, which are millions of small hairs that push away mucus when it enters the body. If the lungs become even more damaged, smokers may not be able to breathe on their own, and they will be put on a device to help them breathe such as a ventilator. In some cases, smoking causes the lining of the lungs to become inflamed, making the smoker unable to breathe, which leads to death.