picture of cigarette smoking Before 18 Tied to Increased Respiratory Symptoms in Young Adults Smoking: Effects, Risks, Diseases, Quitting
Description
Available at: Accessed May 14, 2006
Conclusion Use of a 20-year smoking duration cutoff instead of a 20-pack-year cutoff greatly increases the proportion of patients with lung cancer who would qualify for screening and eliminates the racial disparity in screening eligibility between Black versus White individuals

For smokers who enjoy buying in bulk, the real concern becomes: Will my cigarettes go bad, lose flavour, or become harmful if they sit for months or even years
Researchers have exposed gum fibroblasts, epithelial cells, and immune cells to e-cigarette aerosols and flavoring compounds