Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started
My Medicine

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Lung Cancer Risks: Myths and Facts Slideshow

Myth: If You've Smoked for Years, the Damage Is Done

Fact: It's never too late to stop smoking. Quitting has almost immediate benefits, including improved circulation and lung function. Risk of lung cancer begins to decline over time. Ten years after quitting, former smokers cut their risk of developing lung cancer by up to 50%.

Myth: Low-Tar or 'Light' Cigarettes Are Safer Than Regular

Fact: Light, ultra-light, and low-tar are just as dangerous as regular cigarettes. And beware of menthol: Some research suggests that menthol cigarettes may be more dangerous and harder to quit. Their cooling sensation can allow smokers to inhale more deeply.

Myth: Smoking Marijuana Doesn't Increase Lung Cancer Risk

Fact: Marijuana smoking may increase lung cancer risk, but more research is needed. Many people who use marijuana also smoke cigarettes, and there is some evidence that the combined use may increase a smoker’s risk for lung cancer even more.

Myth: Antioxidant Supplements Protect You From Cancer

Fact: Based on population studies, a diet rich in fruits and vegetables with antioxidants may help protect against cancer. But when researchers tested antioxidant supplements, they unexpectedly found an increased risk of lung cancer among smokers who took beta-carotene supplements. Talk to your doctor before taking any supplements.

Myth: Pipes and Cigars Don't Cause Lung Cancer

Fact: Smoking pipes or cigars increases not only lung cancer risk but also the risk for cancers of the mouth, throat, and esophagus. Cigar smoking puts you at much greater risk of both heart disease and lung disease. Cigars are just as toxic, maybe more so, than cigarettes.

Myth: Smoking Is Your Only Lung Cancer Risk Factor

Fact: The second leading cause of lung cancer, after tobacco smoke, is an odorless radioactive gas called radon. Emitted from rock and soil, it can seep up into homes and other buildings. The only way to know if you're living with dangerous levels is to test your house or office for it. Call your state or county health department for information.

Myth: Talcum Powder Causes Lung Cancer

Fact: Researchers have found no association between lung cancer and breathing in talcum powder. However, occupational exposure to asbestos, arsenic, and other substances do increase lung cancer risk.

Myth: If Diagnosed With Lung Cancer, Quitting is Pointless

Fact: Continued smoking decreases the effectiveness of cancer treatment and may make side effects worse. Smokers undergoing surgery, for example, have more trouble healing than ex-smokers. Those who smoke while undergoing radiation for cancer of the larynx are less likely to regain normal voice quality. In some cases, quitting can cut the risk of a second cancer forming.

Myth: Exercise Doesn't Affect Lung Cancer Risk

Fact: Regular physical activity may reduce the risk of lung cancer by 20% or more, studies show. In addition, exercise improves lung function and reduces the danger of other diseases, including heart disease and stroke.

Myth: Air Pollution Is a Leading Cause of Lung Cancer

Fact: Tobacco is by far the leading cause of lung cancer. But air pollution has been recognized as a cancer causing agent by the World Health Organization and of the 3.2 million deaths air pollution causes worldwide, 223,000 are from lung cancer.

Chemotherapy for Non Small Cell Lung Cancer

Reviewed by Melinda Ratini, DO, MS on April 15, 2014

Sources: Sources

This tool does not provide medical advice. See additional information: Disclaimer

© 2014 WebMD, LLC. All rights reserved.

Additional Resources

Non-Small Cell Lung Cancer

  • Squamous cell carcinoma accounts for 30% of lung cancers.
  • Adenocarcinoma accounts for 40% of lung cancers.
  • Large-cell carcinomas account for 10% to 15% of lung cancers.

Women's Health Newsletter

Find out what women really need.

Lung Cancer Poll

What's the hardest part of dealing with lung cancer?

View Results