Tobacco

 is the common name of several plants in the  Nicotiana of the family Solanaceae, and the general term for any product prepared from the cured leaves of these plants.

More than 70  of are known, but the chief commercial crop is N. tabacum.

The more potent variant N. rustica is also used in some countries.

Dried leaves are mainly used for smoking in cigarettes and cigars, as well as pipes and shishas.

They can also be consumed as snuff, chewing , dipping  and snus.

contains the highly addictive stimulant alkaloid nicotine as well as harmala alkaloids.

use is a cause or risk factor for many deadly diseases, especially those affecting the heart, liver, and lungs, as well as many cancers.