- Smoking is the inhalation of the smoke of burning tobacco that is used mostly in three forms: cigarettes, pipes, and cigars.
- Casual smoking is the act of smoking only occasionally, usually in a social situation or to relieve stress.
- A smoking habit is a physical addiction to tobacco products. Many health experts as of 2004 regarded habitual smoking as a psychological addiction, one with serious health consequences. Nicotine, the active ingredient in tobacco, is inhaled into the lungs, where most of it stays.
- The rest passes into the bloodstream, reaching the brain in about 10 seconds and dispersing throughout the body in about 20 seconds.
Causes and Symptoms :-
- No one starts smoking to become addicted to nicotine.
- It is not known how much nicotine may be consumed before the body becomes addicted.
- once smoking becomes a habit, the smoker faces a lifetime of health risks associated with one of the strongest addictions known to humans.
Causes and Symptoms :-
Smoking causes around 7 out of every 10 cases of lung cancer (70%). It also causes cancer in many other parts of the body, including the:
- Mouth
- Throat
- Voice box (larynx)
- Oesophagus (the tube between your mouth and stomach)
- Bladder
- Bowel
- Cervix
- Kidney
- Liver
- Stomach
- Pancreas
Smoking damages your heart and your blood circulation, increasing your risk of developing conditions such as:
- Coronary heart disease
- Heart attack
- Stroke
- Peripheral vascular disease (damaged blood vessels)
- Cerebrovascular disease (damaged arteries that supply blood to your brain)
- Smoking also damages your lungs, leading to conditions such as:
- Chronic obstructive pulmonary disease (COPD), which incorporates bronchitis and emphysema
- Pneumonia
- Smoking can also worsen or prolong the symptoms of respiratory conditions such as asthma, or respiratory tract infections such as the common cold.
- In men, smoking can cause impotence because it limits the blood supply to the penis.
- It can also reduce the fertility of both men and women.
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