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http://en.wikipedia.org/wiki/Passive_smoking
Αντιγράφω:
Second-hand smoke causes many of the same diseases as direct smoking, including cardiovascular diseases, lung cancer, and respiratory diseases.[2][3][8] These diseases include:
Cancer:
General: overall increased risk;[9] reviewing the evidence accumulated on a worldwide basis, the International Agency for Research on Cancer concluded in 2004 that "Involuntary smoking (exposure to secondhand or 'environmental' tobacco smoke) is carcinogenic to humans."[3]
Lung cancer: the effect of passive smoking on lung cancer has been extensively studied. A series of studies from the USA from 1986–2003,[10][11][12][13] the UK in 1998,[14][15] Australia in 1997[16] and internationally in 2004[17] have consistently shown a significant increase in relative risk among those exposed to passive smoke.[18]
Breast cancer: The California Environmental Protection Agency concluded in 2005 that passive smoking increases the risk of breast cancer in younger, primarily premenopausal women by 70%[8] and the US Surgeon General has concluded that the evidence is "suggestive," but still insufficient to assert such a causal relationship.[2] In contrast, the International Agency for Research on Cancer concluded in 2004 that there was "no support for a causal relation between involuntary exposure to tobacco smoke and breast cancer in never-smokers."[3]
Brain tumor: The risk in children increases significantly with higher amount of passive smoking, even if the mother doesn't smoke,[19] thus not restricting risk to prenatal exposure during pregnancy.