COPD is progressive, and usually starts after age 40. At first, it may be barely noticeable. The lungs normally lose elasticity as they age. However, in smokers and those with COPD, this loss is doubled or even tripled.
Symptoms of COPD appear when the airway becomes blocked. This may show as shortness of breath, a chronic cough, or more sputum. (Sputum is material coughed up from the lungs and spit out through the mouth.) COPD may begin with simply feeling more breathless than usual with strenuous exercise. However, without treatment, it can eventually reach the point where simply getting dressed causes shortness of breath.
Although primarily a disease of the lungs, COPD can also affect the rest of the body. Muscle weakness, fatigue, weight loss, heart disease, and depression can all be linked to it. Over half of COPD patients report that symptoms interfere with normal physical activity, household chores, family and social activities, sleep, and the ability to work.
Smoking is the primary cause in at least 80 to 90 per cent of COPD cases. Very few non-smokers develop the disease. Not all smokers develop COPD, but those with a first-degree relative (parent or sibling) affected by COPD are more likely to develop it. Those chronically exposed to second-hand smoke are also at risk.
Occupational exposure to chemicals, fumes, and dust (such as grain, coal, and industrial dusts) can also be a factor. This is especially true for those who smoke. Although some studies show air pollution may play a small role in causing COPD, it is much more likely to simply make symptoms worse in someone who already has it.
A rare hereditary condition, called alpha-1 antitrypsin deficiency, can also lead to COPD. Here, a protein that helps to protect lung tissue from damage is missing. However, the condition causes less than five per cent of COPD cases. It would be suspected in someone with symptoms of COPD who has never smoked, or who starts having symptoms between age 20 and 50.
Anyone over the age of 40 with a history of smoking and any symptoms of COPD should see their family doctor. Diagnosis is made through pulmonary function testing. This special group of tests measures how well the lungs take in and release air, and move oxygen into the blood. Pulmonary function tests are not usually done in the family doctor’s office, as they require special equipment and technicians.
The tests are done by breathing into the mouthpiece of a spirometer, a machine that records the amount and rate of air breathed in and out over a period of time. Some measurements are done with normal quiet breathing, while others require forced in and out breathing. These tests can help to tell the difference between COPD, asthma, heart disease, and other lung diseases like tuberculosis and cancer that mimic the symptoms of COPD.
COPD can come on very slowly. Most people adapt to the feeling of breathlessness early on, and so do not notice symptoms until damage is severe. Some studies estimate that only 25 to 50 per cent of people with symptoms of COPD have been diagnosed with it. Unless COPD is identified, opportunities for treatment and quality of life are reduced.
Lifestyle changes and medication can make a difference. People with COPD are encouraged to maintain a healthy, active lifestyle. Many centres offer pulmonary rehabilitation. This supervised exercise and education program is designed to improve the ability to tolerate exercise.
Many different types of inhaled medications can reduce or prevent symptoms and improve ability to function. At late stages of the disease, it may be necessary to deal with low levels of oxygen in the blood by using oxygen all the time. Very rarely, surgery or lung transplantation is an option.
Both exercise training programs and medications have been shown to significantly control symptoms of COPD. However, they do not actually stop the continuing damage to the lungs. Quitting smoking is the only way to reduce the risk of developing COPD or slow its progress.
Smoking is a powerful addiction, and quitting can be very difficult. Nicotine, the addictive part of cigarettes, is quickly absorbed into the blood from the lungs. It reaches the brain in 10 to 20 seconds, where it has many different effects. It can increase blood pressure and heart rate, and make the body’s arteries narrow. In the brain, it causes the chemical dopamine to be released.
Physical Benefits of Quitting
|8 hours||Carbon monoxide levels in the blood drop, and oxygen levels return
|Two days||The risk of heart attack lessens and your sense of smell and taste
|Three days||Lungs work up to 30 per cent better and blood circulation gets better.|
|Three months||Lungs work up to 30 per cent better and blood circulation gets better.|
|Six months||Coughing, tiredness, sinus congestion and breathlessness are reduced.|
|One year||Risk of a smoking-related heart attack is cut in half.|
|10 years||Risk of dying of lung cancer is cut in half.|
|15 years||Risk of dying of a heart attack is the same as for someone who has
Dopamine is often called the ‘pleasure chemical’ of the brain, as it provides feelings of enjoyment. Its release reinforces the desire to keep smoking. Thanks to dopamine, smokers feel either stimulated or relaxed while smoking. Other street drugs, like cocaine, also release dopamine. This explains why nicotine is addictive – it is a very powerful drug.
Quitting smoking leads to withdrawal, as the body has become used to nicotine. Withdrawal symptoms start an hour or two after the last cigarette and are most intense in the first few days. Symptoms may include nervousness, poor sleep, cough, and an irritable mood. The table below lists possible symptoms of nicotine withdrawal and ways to deal with them.
Quitting and Staying a Quitter –
|When you quit smoking, you will likely have nicotine withdrawal symptoms as your body adjusts to the lack of nicotine. Whether or not you are taking medication to stop smoking, you may feel depressed, short-tempered, frustrated or angry, nervous or impatient, or have difficulty concentrating. Your appetite may increase, and you may gain some weight. Withdrawal symptoms like these are a common cause of relapse to smoking. Dealing with withdrawal symptoms can be a challenging part of the quitting process, but remember – they are usually temporary and can be managed.|
|Lightheadedness||Up to 48 hours||• Sit or lie down until it passes|
|Disturbed sleep||Up to one week||• Avoid caffeine
• Relax in the evening
• Take a hot bath or do relaxation exercises before bed
• Do not nap during the day
or stomach pain
|Up to two weeks||• Drink plenty of fluids
• Eat plenty of fruits, vegetables and whole grain cereals
|Poor concentration||Up to two weeks||• Avoid additional stress
• Take regular work breaks
• Split bigger projects into smaller tasks
|Up to two to
|• Delay having a smoke
• Distract yourself
• Drink water
• Take deep breaths
|Cough||Up to three weeks|| This is a sign that airways are regaining the ability to clear themselves of mucus
• Drink plenty of fluids to loosen mucus
|Fatigue||Up to four weeks||• Take naps
• Avoid overexerting yourself
• Get fresh air
|Up to four weeks||• Take deep breaths
• Use relaxation techniques
|Restlessness||Up to four weeks||
|Depressed mood||Up to four weeks||• Seek support from friends, family or a health care professional
• See your doctor if depression is intense and will not go away
|Increased appetite||Up to 10 weeks||• Eat balanced meals
• Drink plenty of water
• Ensure healthy, low-fat snacks are available
• Increase physical activity
If you want to quit smoking, talk to your family doctor. Help is available. Nicotine replacement products like patches and gums, and stop-smoking medications like Zyban®, are designed to reduce withdrawal symptoms. These products roughly double the chance of quitting.
Another product called Champix® is available. This prescribed medication works in two ways. First, it reduces the craving for nicotine by binding to receptors in the brain and reducing withdrawal symptoms. Second, it reduces the satisfaction received from smoking.
Since all of these medications have risks and side effects, talk to your doctor before starting treatment.
As difficult as it can be to quit smoking, it is the single most important thing that you can do for your health – at any age. You will benefit even if you have already developed an illness like COPD.
People diagnosed with COPD who quit smoking have fewer symptoms, spend less time in hospital and are less likely to die of the condition. The rate at which lung function declines with age will even return to that of a non-smoker.
Your risk of death drops almost as soon as you quit smoking. This is most likely due to the blood’s improved ability to deliver oxygen to the body’s tissues. Those who quit also rapidly reduce the chances of developing heart disease, cancer, and lung disease. These benefits last a lifetime. After 10 to 15 smoke-free years, your risk of dying from any illnesses related to smoking drops to that of someone who has never smoked.
Chronic obstructive pulmonary disease is a serious illness affecting a great number of smokers, and is often undiagnosed. If you think that you may be affected, get tested. Early diagnosis and treatment are vital. Quitting smoking is the most effective way to treat this disease. It is never too late to quit.