Changing Face of Lung Cancer

For many years, lung cancer was primarily associated with the image of a lifelong smoker. However, this perception is evolving.

Lung cancer continues to be the leading cause of cancer-related deaths in the US, accounting for roughly 20% of all cancer fatalities—approximately 125,000 deaths each year.

While smoking is responsible for about 80% of cases, the percentage among nonsmokers is on the rise—from 8% in the early 1990s to 20% by 2022.

In its initial phases, lung cancer symptoms can be quite vague, often overlooked: a persistent cough that lingers, slight back or joint pain, generalized fatigue, or even minor amounts of blood in coughs, which may come and go quickly.

As more nonsmokers face this alarming diagnosis, healthcare professionals are urgently trying to understand the underlying causes.

Environmental pollutants and harmful chemicals are increasingly being examined. For instance, air pollution doesn’t just irritate the lungs; it can also change how genes operate.

Research indicates that inhaling fine particulate pollution boosts a nonsmoker’s chance of developing lung cancer by 8% and increases the risk of dying from it by 11%.

Experts suggest that this pollution, combined with specific genetic vulnerabilities, could be a pathway to cancer development.

Dr. Nabil Rizk, Chief of Thoracic Surgery at Hackensack University Medical Center in New Jersey, pointed out that studies indicate lung cancer among never-smokers may feature different genetic mutations, such as alterations in the EGFR gene. He emphasized that air pollution significantly elevates risk for these individuals.

Take Laura Reed, for example. For her, lung cancer was never a consideration. She actively monitored her health, undergoing regular screenings due to her mother’s early death from colorectal cancer. She was diligent about cervical and mammogram check-ups too, all out of concern for her own risks.

A nonsmoker, Laura maintained a healthy diet and exercise routine. Given her lack of smoking history, the idea of lung cancer screening—usually involving a CT scan—never crossed her mind.

Yet, prior to her diagnosis, she faced symptoms like a persistent morning cough, episodes of coughing up blood, and ongoing lower back and wrist pain, which she dismissed as stress, allergies, or simply aging.

Despite her proactive health measures, they could not counteract the toxic pollution she was exposed to while serving in the Navy abroad.

When diagnosed with stage IV lung cancer at the age of 37, it became apparent to her and her physicians that her military exposure might have played a key role in her condition.

A year before her diagnosis, Laura began noticing issues, especially a troublesome morning cough. There were instances of blood in her cough, but she attributed it to stress or simply being too busy.

Despite being active, fit, and a non-smoker, these symptoms, being somewhat vague, didn’t signal cancer to her.

Dr. Rizk noted that many ailments linked to lung cancer symptoms—like a persistent cough or back pain—often get dismissed due to their common nature, delaying proper diagnosis.

Reed visited her local VA hospital in April 2023 for her annual check-up, expecting the usual tests and a clear health report. But this time felt different. Along with her usual aches, there was that persistent cough.

While her doctor attributed the wrist pain to aging, upon mentioning her year-long cough, the doctor became concerned and ordered an X-ray. It revealed a six-millimeter nodule in her lung, but reassurance followed that it was common and shouldn’t cause alarm—just follow up with a CT scan.

Veterans, especially Navy servicemen, often encounter lung nodules due to prolonged exposure to asbestos and other airborne dangers during service.

In the midst of military operations in Iraq and Afghanistan, countless tons of waste were burned every day, exposing service members to hazardous materials.

After her X-ray, Laura turned to the internet for answers about her symptoms. Most articles she found seemed benign, and the thought of cancer didn’t linger long in her mind. But she returned for her CT scan, and when her phone rang shortly after, concern washed over her.

“It’s never good when they call you that fast,” she recalled.

The results revealed that what was thought to be a small nodule was, in fact, a six-centimeter mass—ten times larger. Laura faced stage IV lung cancer.

She underwent surgery in October to remove part of her lung, and afterward, she was declared cancer-free.

Now at 40, Laura enjoys life, playing mahjong and horseback riding, thanks in part to a daily targeted therapy pill that transformed her previously aggressive cancer into a manageable condition.

This treatment has drastically increased her quality of life, halting the pain and enabling her to feel youthful again.

For many, lung cancer no longer follows the stereotype of a smoker’s disease. Dr. Rizk explained that genetic mutations linked to lung cancer appear more frequently in never-smokers, particularly younger adults.

Research indicates that expanding screening guidelines beyond traditional smoking history could help identify more cases earlier, particularly among high-risk nonsmokers.

Increased awareness of symptoms such as persistent cough, back pain, and fatigue could lead to faster diagnoses, and further genetic testing might open the door to new treatments.

The evolving understanding of lung cancer has illuminated that it affects a broader population than previously thought—reminding us that anyone with lungs is at risk.