Tobacco use is the leading cause of preventable disease.

Tobacco use is the leading cause of preventable disease, disability and premature death in Canada. It has negative effects on nearly every organ of the body. Every year at least 37,000 Canadians die of the consequences of smoking, while many diagnosed with other illnesses such as heart disease, lung cancer and other respiratory illnesses.

The study showed the level visitors to hospital emergency room visits by people aged 50 and older conducted in hospitalizations for further treatment. However, the level of hospital stay differed significantly between those aged 50 to 64 years and 65 and older .Able to separate methods the specific cell populations from perform cause changes in expression of genes does not basis to illness, but to the experimental manipulations. The csSAM approach bypasses this additional measures to is build more noise in the samples.