Several studies have noticed that passive smokers seem to have a higher risk of lung cancer, asthma and heart disease. The question is, would these people be at elevated risk of these conditions for other reasons, or is it just down to the smoky atmosphere? This is an extremely tricky thing to measure, because there are so many variables that can come into understanding the development of conditions as complicated and varied as asthma and heart disease. And many passive smokers are ex-smokers themselves, so would tend to be at risk of developing lung cancer, anyway.
Several studies have noticed that passive smokers seem to have a higher risk of lung cancer, asthma and heart disease. The question is, would these people be at elevated risk of these conditions for other reasons, or is it just down to the smoky atmosphere? This is an extremely tricky thing to measure, because there are so many variables that can come into understanding the development of conditions as complicated and varied as asthma and heart disease. And many passive smokers are ex-smokers themselves, so would tend to be at risk of developing lung cancer, anyway.
While it's true that those are pretty scary numbers, the truth is that well over half of all lifetime smokers will die of something totally unrelated to smoking and, contrary to popular belief, most smokers will never get lung cancer.
It is depends on people's immunity power. If your body immunity is not good for enough then smoking is dangerous for you.
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Because their "addiction" doesn't allow them to see things realistically.
Because when someone is "IN" a thing, whether it be ANY Addiction, bad relationship, or Cult; they have already resolved to rationalizing away the "bad" things about that THING they are in. They will even go so far as to spend time with other's in a similar bad THING for conformation bias, that they are in the RIGHT with what they are doing . . .