Smoking and COPD: Should I Quit Smoking?

Chronic Obstructive Pulmonary Disease (COPD) is a chronic lung disease affecting 16 million Americans. 1 While multiple factors are associated with COPD (e.g., occupational dust, air pollution, genetic factors), one of the leading causes is smoking. 2

Over time, smoking destroys the air sacs, damages delicate lung tissue, and impairs the cilia in the lungs from successfully clearing mucus. All of this can lead to recurring infections, shortness of breath, wheezing, and other serious respiratory health issues.

Understanding the relationship between smoking and COPD, as well as exploring safer alternatives and ways to quit, is crucial for anyone at risk or living with this condition.

As noted above, smoking is the primary risk factor for COPD. 3 Any amount of smoking increases the risk of developing COPD, but heavier and longer smoking increases the risk further. If you have COPD and you smoke, the constant irritation and infection of your lungs can trigger a COPD flare-up . Flare-ups can also result from exposure to secondhand smoke that irritates your lungs and makes chronic symptoms worse. 4

A COPD flare-up might include:

• Frequent coughing

• Increased mucus production

• More wheezing

• Severe shortness of breath

Because smoking deprives your lungs and other essential organs of oxygen, and your respiratory condition is already constricting your airways, smoking and COPD can be a dangerous combination that may result in frequent flare-ups, extensive treatment, and recurring hospitalizations. 4

Yes, smoking is one of the leading causes of COPD. The harmful chemicals in tobacco smoke damage the air sacs in the lungs, leading to decreased oxygen exchange. Cigarette smoke irritates the airways, leading to inflammation and damaging the delicate lung tissue, ultimately reducing lung function. Over time, this damage causes airflow obstruction and the hallmark symptoms of COPD.

It’s important to note that the risk of COPD is cumulative. The longer you smoke and the more cigarettes you consume, the higher your likelihood of developing the disease. 5 Quitting can slow progression, improving symptoms and outcomes, but it may not fully reverse structural lung damage already present.

While vaping is often marketed as a safer alternative to smoking, research indicates that e-cigarettes are not harmless. The chemicals in vaping liquids, including nicotine, flavorings, and other toxins, can irritate the lungs and lead to inflammation.

Observational evidence suggests that long-term vaping may be associated with developing COPD or worsening existing lung conditions. For people with COPD, vaping or the use of e-cigarettes is not a risk-free alternative and should be approached with caution.

Though you can’t reverse lung damage, quitting can impact how the disease progresses. Here are just a few effects quitting can have on your well-being and quality of life:

• One hour after quitting: Heart rate and blood pressure begin to drop back to normal, and the body’s circulation may start to improve.

• One day after quitting: Oxygen levels start to increase.

• One year after quitting: The risk of developing coronary heart disease is cut in half. 6

The faster you quit, the greater your chance of slowing the progression of your condition. By quitting, your individual treatment may become more effective, although you may require additional COPD treatment methods, including:

• Breathing techniques

• Oxygen therapy

• Airway clearance

• Rehabilitation

If you have COPD, quitting is the single most effective way to slow its progression and improve your quality of life. Here are a few strategies:

• Behavioral counseling. Work with a healthcare professional or support group to build coping strategies and accountability.

• Nicotine replacement therapy (NRT). Patches, gum, or lozenges can reduce withdrawal symptoms.

• Prescription medications. Drugs like varenicline (Chantix) or bupropion (Zyban) can help reduce cravings. However, before you try this approach, talk to your doctor, especially if you’re taking it alongside other medications.

• Lifestyle changes. Exercise, healthy eating, and stress management can help you avoid falling back into old habits.

You don’t have to pick just one. Combining multiple strategies often yields the best results.

• Why does smoking cause COPD? Smoking damages the airways and lung tissue through chronic inflammation and exposure to toxic chemicals. This damage leads to decreased airflow and the progressive symptoms of COPD.

• How does smoking make COPD symptoms worse? Smoking accelerates lung tissue destruction, increases mucus production, and triggers inflammation, making breathing more difficult and increasing the frequency of flare-ups.

• Does vaping or e-cigarette use make COPD better or safer than smoking? Vaping is not safe, and it is associated with respiratory harm. It can still irritate the lungs, cause inflammation, and worsen COPD over time. 7

If you’re living with a chronic lung condition, you’re not alone. Take proactive steps to breathe easier and get back to life. SmartVest provides a proven airway clearance therapy to help clear mucus from the lungs.

Request an informational packet to understand how this approach works and if it’s right for you.

Resources

• United States Centers for Disease Control and Prevention. (2024.) “ COPD. ”

• World Health Organization. (2023.) “ Smoking is the leading cause of chronic obstructive pulmonary disease. ”

• American Lung Association. (2025.) “ 10 of the Worst Diseases Smoking Causes .”

• United States Centers for Disease Control and Prevention. (2025.) “ Smoking and COPD. ”

• National Library of Medicine. (2018.) “ Factors associated with current smoking in COPD patients: A cross-sectional study from the Eastern Black Sea region of Turkey .”

• Medical News Today. (2025.) “ What Happens After You Quit Smoking? ”

• National Library of Medicine. (2025.) “ Association of electronic cigarette use and risk of COPD: a systematic review and meta-analysis. ”