10 doctors weighed in:

My dad's got lung cancer but was nonsmoker. Could it be genetic / hereditary?

10 doctors weighed in
Dr. Carlo Hatem
Internal Medicine - Pulmonary Critical Care
4 doctors agree

In brief: Possibly

Non smokers do get lung cancer, possibly from exposure to other cancer causing agents like radiation, radon, and asbestos.
In some cases there is simply no clear cause.

In brief: Possibly

Non smokers do get lung cancer, possibly from exposure to other cancer causing agents like radiation, radon, and asbestos.
In some cases there is simply no clear cause.
Dr. Carlo Hatem
Dr. Carlo Hatem
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Dr. Joseph Woods
Pathology
3 doctors agree

In brief: Possibly.

The most common cause is tobacco use/cigarrette smoking.
This is most strongly associated with squamous and small cell lung cancers. But there are other kinds, like adenocarcinoma that are also common and it is unclear why. Many genetic mutations are aquired and due to smoking, but some may indicate genetic susceptability. More research is needed.

In brief: Possibly.

The most common cause is tobacco use/cigarrette smoking.
This is most strongly associated with squamous and small cell lung cancers. But there are other kinds, like adenocarcinoma that are also common and it is unclear why. Many genetic mutations are aquired and due to smoking, but some may indicate genetic susceptability. More research is needed.
Dr. Joseph Woods
Dr. Joseph Woods
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2 comments
Dr. Gurmukh Singh
Exposure to radon gas is the second most important factor in lung cancer. Genetic susceptibility is always a factor in cancers.
Dr. Douglas Arenberg
Non-smokers with lung cancer is still among the leading causes of cancer related death in the US. As stated by others, radon gas, and some degree of genetic susceptibility may play a role. We are not yet capable of detecting the gene(s) that result in susceptibility to lung cancer. We don't know what they are.
Dr. Gurmukh Singh
Pathology
1 doctor agrees

In brief: Probable

All cancers have a genetic component.
About 10% of the lung cancers occur in non-smokers. To address your unsaid concern, it does not necessarily put you at a higher risk of lung cancer.

In brief: Probable

All cancers have a genetic component.
About 10% of the lung cancers occur in non-smokers. To address your unsaid concern, it does not necessarily put you at a higher risk of lung cancer.
Dr. Gurmukh Singh
Dr. Gurmukh Singh
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Dr. David Cooke
Surgery - Thoracic

In brief: Yes

Non or never smokers can develop lung cancer if they have a genetic mutation to such genes as egfr or eml4/alk fusion translocation.
Also, patinets with high second hand smoke exposure may develop lung cancer as well.

In brief: Yes

Non or never smokers can develop lung cancer if they have a genetic mutation to such genes as egfr or eml4/alk fusion translocation.
Also, patinets with high second hand smoke exposure may develop lung cancer as well.
Dr. David Cooke
Dr. David Cooke
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