Most people are aware that second-hand smoke is not healthy for them. However, how damaging is it? Scientific evidence tells us:
Non-smokers exposed to second-hand tobacco smoke increase their risk of lung cancer.
Non-smokers who live with the second-hand smoke of a smoker increase their risk of lung cancer by 20-30%.
Passive smoking can cause premature death in non-smokers.
There is no known safe level of exposure to second-hand smoke.
Second-hand tobacco smoke contains more than 4, 000 chemicals and 69 are known to cause cancer.
Passive smoking substantially increases a person’s risk of getting coronary heart disease.
What we know is that, for a non-smoker(as well as for a smoker!), breathing in second-hand tobacco smoke still carries significant health risks. There is no known safe level of exposure to passive smoking. So passive smoking is more dangerous than smoking.