"Smoking is injurious for health"

Smoking
Tobacco smoking is the practice of burning tobacco and inhaling the smoke (consisting of particle and gaseous phases). (A more broad definition may include simply taking tobacco smoke into the mouth, and then releasing it, as is done by some with tobacco pipes and cigars).
Smoke practice was believed to begin as early as 5000–3000 BC. Tobacco was introduced to Eurasia in the late 17th century where it followed common trade routes.
German scientists identified a link between smoking and lung cancer in the late 1920s.
Fashion: Now, a days smoking becomes fashion for every one. According to a research 45% of smokers are smoking as fashion. 
They have no interest in smoking but , they are making a fashion for society.
Smoking cause disease:

Smoking Can Damage Every Part of the Body:
Cancer
  • Head or Neck
  • Lung
  • Leukemia
  • Stomach
  • Kidney
  • Pancreas
  • Colon
  • Bladder
  • Cervix
Chronic Diseases
  • Stroke
  • Blindness
  • Gum infection
  • Aortic rupture
  • Heart disease
  • Pneumonia
  • Hardening of the arteries
  • Chronic lung disease & asthma
  • Reduced fertility
  • Hip fracture

Smoking and Respiratory Diseas

Smoking can cause lung disease by damaging your airways and the small air sacs (alveoli) found in your lungs.1,2
  • Lung diseases caused by smoking include COPD, which includes emphysema and chronic bronchitis.1,2
  • Cigarette smoking causes most cases of lung cancer.1
  • If you have asthma, tobacco smoke can trigger an attack or make an attack worse.
  • Smokers are 12 to 13 times more likely to die from COPD than nonsmokers.
How to Quit smoking:
Think about if you want to quit smoking. Nicotine is incredibly addictive and it will take determination to quit. Ask yourself if a life without smoking is more appealing than continuing your life as a smoker.[1] If the answer is yes, have a clear reason for wanting to quit. This way, when abstaining becomes difficult you can be clear about your very important reason to quit.
Consider how smoking affects these areas of your life: your health, your appearance, your lifestyle, and your loved ones.[2] Ask yourself if these areas would benefit from you quitting.
Determine why you want to quit. Make a list of all the reasons why you want to quit. This will help you become clear about your decision to quit. You'll want to refer to this list later, if you're tempted to smoke.
  • For example, your list might say something like: I want to quit smoking so I can run and keep up with my son during soccer practice, have more energy, be alive to see my youngest grandchild get married, or save money.

Be prepared for nicotine-withdrawal symptoms. Cigarettes are highly effective at delivering nicotine throughout your body.[3] When you stop smoking, you might experience increased cravings, anxiety, depression, headaches, feeling tense or restless, increased appetite and weight gain, and problems concentrating.[4]
  • Realize that it may take more than one attempt to stop smoking. About 45 million Americans use some form of nicotine, and only 5 percent of users are able to quit during their first attempt.
Choose a date for when your plan will start. Committing to a start date adds structure to your plan. For example you might choose an important day such as a birthday or holiday, or just pick a date you like.
  • Pick a date within the next 2 weeks. This gives you time to prepare and start on a day that isn't stressful, important, would otherwise lead you to smoke.
Pick a method. Decide which method you would want to use, like quitting cold turkey, or slowing/reducing your use. Quitting cold turkey means that you completely stop smoking without looking back. Reducing your use means smoking less and less until you've stopped. If you pick reducing your means, be specific about when and by how much you will reduce your use. For example, it might be simple like saying, "I will reduce my use by one cigarette every two days."
  • You'll have a better chance of success if you combine counseling and medication with stopping, regardless of which method you choose.