> Since the 1964 Surgeon General’s Report, 2.5 million adults who were nonsmokers died because they breathed secondhand smoke [1]
> While the tobacco industry continues to claim that the evidence that passive smoking causes disease – particularly lung cancer – is controversial, every independent authoritative scientific body that has examined the evidence has concluded that passive smoking causes many diseases. [2]
Also, the Enstrom & Kabat study is widely criticised [3] + [4]:
> incorrect definition of passive smoking exposure as a “nonsmokerʼs marriage to a smoker” [3]
> A severe error in the study was the failure to establish a control group of nonsmokers who were unexposed to secondhand smoke. [4]
[1] https://www.cdc.gov/tobacco/data_statistics/fact_sheets/seco...
[2] http://www.who.int/tobacco/research/secondhand_smoke/about/e...
[3] https://www.researchgate.net/publication/236833718_Critique_...
[4] [PPT] www.econ.wayne.edu/agoodman/7550/week14/Second-hand_Smoke.ppt
Do they really, or is that an old wives tale from non-reproducible research, the way the anti-fat scare was?
"The largest and longest study (Enstrom & Kabat) followed more than 35,000 subjects for almost 40 years and found no significant risk associated with second-hand smoke. Similarly, the World Health Organization spent seven years at a dozen research centers in seven countries and came to the same conclusion".