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A 35-year-old member asked:

what causes lung cancer?

8 doctor answers18 doctors weighed in
Dr. Thomas Birdas
Thoracic Surgery 26 years experience
Mainly smoking: But a lot of other factors (most of which can nit be altered) may play a role. Over 85% of lung cancers are seen in smokers, so if you would like to decrease your chances of getting lung cancer (and also cardiovascular disease!) quit smoking now!
Dr. Matthew Hennig
Thoracic Surgery 19 years experience
Several causes...: But the most common correlation with lung cancer is smoking. Smoking alone will increase your risk of lung cancer by about 20 times by smoking one pack per day for twenty years. Other sources can be genetic (alpha-1 antitrypsin disorder), related to environmental exposures that are inhaled, or other less common reasons.
Dr. Gurmukh Singh
Pathology 49 years experience
Second hand smoke and radon gas are also causative factors but not as strong as smoking. The other factor is genetic susceptibility.
Aug 13, 2012
Dr. David Cooke
Thoracic Surgery 22 years experience
80% by smoking: Second common cause is radon. Second hand smoke is also common cause of lung cancer.
Dr. David Cooke
Thoracic Surgery 22 years experience
Many things: >80% of lung cancer is caused by smoking. However never smokers (defined as <100 cigarettes in lifetime) can get smoking. Risk factors include radon exposure, second hand smoke, and genetic mutations such as egfr activating mutations. For more info: http://bit.Ly/ygfoko.
Dr. Loki Skylizard
Thoracic Surgery 20 years experience
Exposure: Risks of lung cancer: http://goo.Gl/gu9ms as noted by others, number one/major cause is exposure to inhaled carcinogens, particularly combustion/burning products (i.e. Tobacco, marijuana, etc...). Other inhalants are also noted risk factors. Be well and respect yourself.
Dr. Byron May
Radiation Oncology 31 years experience
Smoking!: Smoke from cigarettes contains approximately 35 known chemicals to cause tumors in lab rats. Smokers have a much higher incidence of lung cancer over the non-smoking population. Asbestos inhalation increases risk for mesothelioma, a very aggressive form of lung cancer. Radon, a radioactive decay product from soil uranium, is thought to be the second leading cause of lung cancer in the usa.
Dr. Raja Mudad
Medical Oncology 32 years experience
SMOKING SMOKING : And smoking the biggest and most significant risk factor. 90% of lung cancers develop in people who have smoked. Other causes: asbestos exposure, radon.
Dr. Loki Skylizard
Thoracic Surgery 20 years experience
Risk factors: Lung cancer is most commonly a long process of years in which the lungs are exposed to damaging substances/"carcinogens". The biggest/best known is smoking. This link may help: http://www.Cancer.Net/cancer-types/lung-cancer/risk-factors-and-prevention.

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Similar questions

A 37-year-old member asked:

Could car fumes cause lung cancer?

4 doctor answers10 doctors weighed in
Dr. Donald Elton
A Verified Doctoranswered
A US doctor answeredLearn more
Not likely: The vast majority of lung cancer is caused by smoking - i.e. First hand cigarette smoke. Lung cancer is rare in people who have never smoked. If car exhaust were an important contributor we'd see far more cancer in people who had never smoked.
A 42-year-old member asked:

How can smoking cause lung cancer?

3 doctor answers5 doctors weighed in
Dr. Pasala Ravichandran
A Verified Doctoranswered
A US doctor answeredLearn more
Toxins: Irritation, tar and other hundreds of impurities in the cigarettes.
A 35-year-old member asked:

Can smoking weed cause lung cancer?

2 doctor answers4 doctors weighed in
Dr. Brian Mott
Thoracic Surgery 29 years experience
Smoking marijuana: Smoking marijuana can increase your lung cancer risk.
A 39-year-old member asked:

Does hairspray cause lung cancer?

1 doctor answer1 doctor weighed in
Dr. Sewa Legha
Medical Oncology 50 years experience
No, not really: Hair sprays are considered safe.
NJ
A 52-year-old female asked:

Can cigars cause lung cancer?

1 doctor answer7 doctors weighed in
Dr. Ed Friedlander
Pathology 44 years experience
Yes: They&#x27;re not so deadly as cigarettes because people smoke fewer and the smoke is so disgusting that it&#x27;s not much inhaled. However, I&#x27;ve autopsied two non-smoking wives of heavy cigar smokers who died of smoker-type lung cancer -- my only non-smoker lung cancer autosies. I&#x27;d had to be a husband who had to live with that one.

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