Up In Secondhand Smoke: What Does Science Tell Us?

Up In Secondhand Smoke: What Does Science Tell Us?: "So, how dangerous IS secondhand smoke? The most reliable data would indicate that it is nowhere near as serious a threat as elements of the media (and their supporters within academia) would have us believe. In fact, ETS is, at its most extreme, far less dangerous than numerous other indoor air pollutants such as carbon monoxide, toxic mold, and radon.

The biggest study on this topic, covering 39 years, and involving 118,094 adults, with particular focus on 35,561 who never smoked, and had a spouse in the study with known smoking habits, came to this conclusion:

'The results do not support a causal relation between environmental tobacco smoke and tobacco related mortality, although they do not rule out a small effect. The association between exposure to environmental tobacco smoke and coronary heart disease and lung cancer may be considerably weaker than generally believed.'"