It is important to quit smoking to avoid the risk of COPD
By Bin Yang, M.D., M.S., M.P.H.
Smoking is the leading cause of COPD (chronic obstructive pulmonary disease). In the United States, COPD is one of the most common lung diseases, the fourth leading cause of death, and among the top three leading causes of disability, second only to disability from heart disease.
There are two main forms of COPD: 1) chronic bronchitis with long-term productive cough, and 2) emphysema with lung destruction over time. Most people with COPD have a combination of both conditions.
The more a person smokes, the more likely that person will develop COPD. Studies show that smokers are about six times more likely to develop COPD than nonsmokers. All heavy smokers experience other negative health effects of smoking, such as cancer, heart attacks and premature death. Scientists say there are more than 4,000 compounds in cigarette smoke.A sizeable number of them are toxic and carcinogenic.
Exposure to secondhand smoke is known to damage the lungs. Studies suggest that people exposed to high amounts of secondhand smoke are at higher risk for COPD.Air pollution with dust or chemical fumes is found to contribute to COPD.
COPD is a chronic progressive disorder marked by persistent airway obstruction. Because the symptoms of COPD develop slowly, some people may not know that they are sick.
COPD tends to develop 20 to 30 years after a person starts smoking, so it’s frequently diagnosed in middle age.The first symptom, which often appears in the mid- 40s, is a mild cough with clear sputum and feeling of having to clear your throat usually when you get out of bed first thing in the morning due to excess mucus in your lungs. Subsequently, COPD patients develop symptoms of fatigue, shortness of breath especially during physical activities, chest tightness, wheezing, recurrent respiratory infections, barrel-shaped chest from air remaining trapped in the overinflated lungs, and chronic productive cough with phlegm (sputum).
After a diagnosis of COPD, it’s important to stop smoking, protect yourself from lung irritants at work, get annual flu vaccines, and talk to your doctor about the pneumococcal vaccine to prevent pneumonia.
What are the health benefits of smoking cessation? Here’s the information about how long you will begin to see the benefits after you quit smoking:
After eight hours: the carbon monoxide level in your blood drops and the oxygen level rises to normal.
After 24 hours: your chance of a heart attack decreases.
After 48 hours: your ability to taste and smell improves. After 72 hours: the bronchial tubes relax and breathing is easier for you. After two weeks to three months: your circulation improves, and your lung capacity increases up to 30 percent.
After 1 one to nine months: cilia (tiny hairs) that sweep debris from your lungs regrow to increase your lungs’ ability to handle mucus, clean the lungs and reduce infection; coughing, sinus congestion and shortness of breath also decrease.
After one year: your excess risk of coronary disease is half that of a person who smokes.
After two years: your heart attack risk drops to near normal.
After five years: lung cancer death rate decreases by almost half, your risk of having a stroke reduces, and your risk of developing mouth, larynx, throat, esophageal, bladder or other cancers is cut in half that of a smoker.
After 10 years: your risk of dying from lung cancer drops to almost the same rate as that of a lifelong nonsmoker.
After 15 years: your risk of coronary heart disease is the same as a person who has never smoked.