5 doctors weighed in:
What's the youngest a person or child could develop lung cancer from second hand smoking?
5 doctors weighed in

Dr. Joseph Woods
Pathology
3 doctors agree
In brief: Hard to say.
Lung cancer usually, if not always develops in people over 40 with the peak incidence between 55 and 65 years.
Cases under 40 are rare regardless of cause. However the international agency for research on cancer, the U.S. Surgeon general, and many other agencies have classified secondhand smoke as a carcinogen, and many U.S. Studies showed ad increased relative risk for cancer in those exposed.

In brief: Hard to say.
Lung cancer usually, if not always develops in people over 40 with the peak incidence between 55 and 65 years.
Cases under 40 are rare regardless of cause. However the international agency for research on cancer, the U.S. Surgeon general, and many other agencies have classified secondhand smoke as a carcinogen, and many U.S. Studies showed ad increased relative risk for cancer in those exposed.
Dr. Joseph Woods
Dr. Joseph Woods
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2 comments
Dr. Eric Toloza
depends on how much second-hand smoke and whether child has predisposition genetically to cancer.
Dr. Eric Toloza
costochondritis usually related to deep breathing, coughing, sneezing, movement, even at rest ... while heart attack usually related to strenuous activity or emotional stress ...
Dr. LUIS IRIZARRY
Family Medicine
In brief: Very rare
In children lung cancer is basically non-existent.
Mean age is 71 year old. Age 55-79, with a 30+ pack history have the greatest risk for lung cancer. Direct smoking is the major risk factor (85-90% ofcases). Sencond hand smoking is a relative risk factor , the real risk not clearly defined. I still recomend avoiding 2nd hand smoking.

In brief: Very rare
In children lung cancer is basically non-existent.
Mean age is 71 year old. Age 55-79, with a 30+ pack history have the greatest risk for lung cancer. Direct smoking is the major risk factor (85-90% ofcases). Sencond hand smoking is a relative risk factor , the real risk not clearly defined. I still recomend avoiding 2nd hand smoking.
Dr. LUIS IRIZARRY
Dr. LUIS IRIZARRY
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