Tobacco

mckayla smith

Definition of tobacco

The definition of tobacco is a preparation of the nicotine-rich leaves of an American plant, which are cured by a process of drying and fermentation for smoking or chewing.

short-term and long-term effect of tobacco

When a person smokes a cigarette, the body responds immediately to the chemical nicotine in the smoke . Nicotine causes a short-term increase in blood pressure, heart rate, and the flow of blood from the heart. It also causes the arteries to narrow. Carbon monoxide reduces the amount of oxygen the blood can carry.


long-term

It is now well documented that smoking can cause chronic lung disease, coronary heart disease, and stroke, as well as cancer of the lungs, larynx, esophagus, mouth, and bladder. In addition, smoking is known to contribute to cancer of the cervix, pancreas, and kidneys.

Why is tobacco addictive ?

tobacco is addictive because of a drug called nicotine , nicotine is a toxic colorless or yellowish oily liquid that is the chief active constituent of tobacco. It acts as a stimulant in small doses, but in larger amounts blocks the action of autonomic nerve and skeletal muscle cells. Nicotine is also used in insecticides.

posionous drugs