tobacco is a drug Urban Recovery Understanding The Tobacco Addiction -

The National Cancer Institute defines a pack-year as a way to measure smoking history by multiplying packs smoked per day by years smoked

Many states taxed cigarettes throughout the 1940s and 1950s, but California held off until the summer of 1959, when it enacted a 3-cent tax.[183] All cigarettes sold in California were required and still are required to bear a tax stamp meant to prove payment

Always check the individual product for its exact strength before purchasing

NEWS AND VIEWS It emerges from a study of human cells that smoking can influence certain immune responses to the same extent as can age or genetics