More recent studies have tended to find cigarette smokers to be at a higher risk of colorectal cancer and even colorectal adenomas, precursors of cancers. The prognosis of breast cancer patients seems to been poorer in smokers, and the risk of cervical cancer higher in smokers than non-smokers. The role of a sex partner's smoking or passive smoking on cervical cancer has been a matter of debate. Paternal and maternal smoking may be associated with an increased risk of childhood cancer. Changing from cigarettes to snuff is no good way of taming the risk.
Moist snuff is a potent carcinogen and has been proven to be a cause of cancer in humans.
Newly revealed hazards will continue to be published, tobacco being a greater cause of death and disability than any single disease. The only message from this almost unbelievable variety of risks is that quitting smoking is the only real means of abolishing the dangers. There is much literature about the benefits of quitting smoking available to motivate the smokers, health promoters and maybe some of those working for the industry. I often wonder how the tobacco industry employees can cope these days. For their sake, not to mention that of current smokers, it would be nice to be able to promote realistic ways of diluting the risks of smoking considerably.