Posted: Mon Aug 09, 2010 11:45 pm
Things are not that black and white unfortunately. Only certain genetic mutations cause cells to multiply rapidly (in other words, cause cancer). Smoking definitely causes mutations but your current genetic makeup could be so far away from risky mutations, you might smoke all your life and still end up without cancer. While some people whose genetic makeup is such that it might take few years worth of mutation to end up with cancer causing mutation. Please note that mutation is an accumulative process.se1956 wrote: Again the argument for some doctors:
... there are many, many smokers without lung cancer and vascular diseases, therefore smoking cannot be the cause of these diseases....
* Recent study by UK's Singer institute gives more info about mutation and cancer.