Learn about symptoms, screenings and prevention to lower your risk of this common cancer.

lung cancer

Lung cancer is the second most common cancer in both men and women. Unfortunately, it often goes undetected until later stages of the disease when it has already started wreaking havoc on your body—only about 16% of lung cancer cases are caught early.

Although current and former smokers are most at risk, anyone can get lung cancer. That's why it's important to know the signs of the disease and to get screened if you qualify to do so. This may make it more likely that lung cancer will be detected at an early stage if you get it, when it's most treatable.


Although symptoms typically don't appear at the earliest stages, the most common symptoms when they do appear are:

  • A persistent cough
  • Coughing up blood or rust-colored spit
  • Chest pain that is often worse with deep breathing, coughing or laughing
  • Hoarseness
  • Loss of appetite or unexplained weight loss
  • Shortness of breath or wheezing
  • Feeling tired or weak
  • Recurrent infections such as bronchitis and pneumonia

If you have any of these symptoms, don't wait to see a doctor and ask about getting screened for lung cancer. The earlier lung cancer is diagnosed, the higher the odds of long-term survival after diagnosis.


Since lung cancer symptoms usually don't appear early, screening is the best way to get ahead of it. The recommended screening test is a low-dose CT (LDCT) scan. The American Cancer Society® recommends that people at high risk for lung cancer get this screening done yearly.

High-risk individuals need to meet all of the following criteria to qualify for screening:

  • Be 50 to 80 years old and in fairly good health
  • Currently smoke or have quit in the past 15 years
  • Have at least a 20-pack-year smoking history

Smoking history is determined by multiplying the number of packs of cigarettes smoked per day by the number of years smoked. For example, if you smoked 1 pack a day for 20 years, you would qualify for this screening.


It's not possible to completely prevent lung cancer, but there are things you can do to lower your risk. The number one thing is to stay away from all tobacco products, including cigarettes, cigars, pipes and e-cigarettes. If you currently smoke, it's never too late to quit. If you don't smoke, don't start. Also avoid second-hand smoke. Smoking is the leading preventable cause of lung cancer, causing 80-90% of all lung cancer deaths.

In addition to not smoking, a healthy diet with lots of fruits and vegetables may help reduce risk. Getting your home tested for radon and avoiding potential carcinogens (cancer-causing agents) at work are other ways to potentially lower your risk of developing lung cancer.

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Date Last Reviewed: September 8, 2021

Editorial Review: Andrea Cohen, Editorial Director, Baldwin Publishing, Inc. Contact Editor

Medical Review: Perry Pitkow, MD

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