Tobacco
Cigarettes contain different substances that impact on health in negative ways.
These substances, contained in tobacco, include Sticky substance found in tobacco smoke, which can cause cancer., The addictive substance found in tobacco and tobacco smoke. and carbon monoxide.
| Cigarette substance | Harmful effect |
| Tar | Causes bronchitis (narrowing of the bronchi and bronchioles). |
| Causes emphysema (alveolar damage reducing the surface area of gas exchange). | |
| Causes lung cancer (abnormal cell division). | |
| Nicotine | Addictive and affects heart rate. |
| Carbon monoxide | Combines with red blood cells reducing their oxygen carrying capacity. |
| Cigarette substance | Tar |
|---|---|
| Harmful effect | Causes bronchitis (narrowing of the bronchi and bronchioles). |
| Cigarette substance | |
|---|---|
| Harmful effect | Causes emphysema (alveolar damage reducing the surface area of gas exchange). |
| Cigarette substance | |
|---|---|
| Harmful effect | Causes lung cancer (abnormal cell division). |
| Cigarette substance | Nicotine |
|---|---|
| Harmful effect | Addictive and affects heart rate. |
| Cigarette substance | Carbon monoxide |
|---|---|
| Harmful effect | Combines with red blood cells reducing their oxygen carrying capacity. |
Smoking bans have been effective at reducing When people breathe in the fumes of another persons' cigarette. and encouraging people to stop smoking.
E-cigarettes are also helping people to stop smoking.
However, some people argue that the inclusion of nicotine can encourage some to start smoking.