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A 47-year-old member asked:

How much exposure to second-hand smoke can one have before it causes effects?

1 doctor answer2 doctors weighed in
Dr. Robert Greer
Family Medicine 44 years experience
None: All exposure to smoke is harmful.

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A 42-year-old member asked:

How harmful is one hour of exposure to second hand smoke?

2 doctor answers4 doctors weighed in
Dr. Gurmukh Singh
Pathology 49 years experience
Difficult to measure: Exposure to second hand smoke can trigger heart attack in susceptible individuals. How harmful, is difficult to state, as most people do not suffer long term consequences from a single short exposure.
A 45-year-old member asked:

What problems are caused by cigarette second hand smoke ?

2 doctor answers3 doctors weighed in
Dr. Dean Giannone
Internal Medicine 25 years experience
Same as smoking.: The risks may be lower, but they're the same as smoking. Heart disease. Lung cancer. Emphysema. The list goes on.
A 50-year-old member asked:

Why does second-hand smoke cause health problems?

1 doctor answer2 doctors weighed in
Dr. Christian Mayaud
Hospital-based practice 35 years experience
It's a Myth: I am not an advocate of smoking and there are lot's of reason to quit smoking but "Second Hand Smoke" is not one of them. The expression "second-hand smoke" is a very effective piece of anti-smoking propaganda used all the time by public health officials and physicians yet there is absolutely no scientific evidence to support it's existence. It's logical to conclude but not proven in any study.
Dr. Christian Mayaud
Hospital-based practice 35 years experience
Provided original answer
The only study ever done which supports the existence of "second hand smoke" was done with asthmatic children who had parents who smoke. It showed that there was a small but significant increase in asthma exacerbations among children whose parents smoked. The term "second hand smoke" started with that study but has been overblown by anti-tobacco propagandists with little scientific support.
Dec 31, 2014
Dr. Christian Mayaud
Hospital-based practice 35 years experience
Provided original answer
"Second Hand Smoke" is "White Lie" commonly told with good intent by physicians and public health officials. We don’t want people to smoke for the proven deleterious effects of tobacco smoke but we also shouldn’t be driving non-smokers crazy with worries of relatively insignificant and unproven secondhand smoking risks. Relax ... If it stinks just avoid it.
Dec 31, 2014

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Last updated Aug 1, 2016

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