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A 49-year-old member asked:

How does smoking cigarettes cause some cancers?

1 doctor answer2 doctors weighed in
Dr. Andrew Turrisi
Radiation Oncology 47 years experience
Tobacco: When burned produces a number of arylhydrocarbons, and other carcinogens that directly attack human dna leading to mutations. Some are repaired, others propagate over time, mean time, nicotine addicts. The more exposure, probabilistic risk increases for cancer, cardiovascular and lung disease. Evidence is overwhelming indisputable..

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A 43-year-old member asked:

How can smoking cigarettes cause cancer?

1 doctor answer2 doctors weighed in
Dr. Thomas Bozzuto
Specializes in Emergency Medicine
Serious consequence: Smoking causes more than four in five cases of lung cancer. Lung cancer has one of the lowest survival rates of all cancers. Tobacco smoke contains more than 70 different cancer-causing substances. When you inhale smoke, these chemicals enter your lungs and spread around the rest of your body. Scientists have shown that these chemicals can damage dna and change important genes.
A 33-year-old member asked:

Can you tell me how smoking cigarettes cause cancer?

1 doctor answer1 doctor weighed in
Dr. Alan Wartenberg
A Verified Doctoranswered
A US doctor answeredLearn more
Nobody truly knows: but the chronic irritation of certain aromatic hydrocarbons in the smoke ("tars") progressively irritates cells, increases the number that die, with new ones taking their place that over many years become more and more abnormal (metaplasia), finally becoming very abnormal (dysplasia) and ultimately becoming cancer (neoplasia). I do not know the exact cellular mechanisms, but some scientists do.
A 44-year-old member asked:

What are the chances that I would get cancer from smoking cigarettes?

2 doctor answers4 doctors weighed in
Dr. Dean Giannone
Internal Medicine 25 years experience
Odds are good.: There are 42 known carcinogens in cigarettes, so chances are one of them will get you.
A 35-year-old member asked:

How long before you can get cancer when you start smoking cigarettes?

1 doctor answer1 doctor weighed in
Dr. Carlos Encarnacion
Medical Oncology 35 years experience
Depends: It depends on many factors, but from the practical standpoint, who cares? The important things are: if you don't smoke (or use any tobacco product), never start. If you do, stop right away. It is never too late. Work hard at it. Don't give someone your hard earned money so you can get sick later.

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Last updated Aug 20, 2013
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