Nicotine is a carotenoid compound, synthesized in roots of tobacco plants and is carried along with the xylem sap into the stems and leaves. It is very toxic. It contains a pyridine and a pyrrolidine ring. A byproduct of the tobacco industry called as Nicotine sulfate , is used as a very potent insecticide e.g., for fumigating greenhouses . There is no insect known to be resistant to nicotine.so it is a poison. But human beings are still consuming it as Fashion.It has a direct impact on the nerves system. Nicotine acts as both a stimulant and a depressant to the central nervous system. Nicotine first causes a release of the hormone epinephrine, which further stimulates the nervous system and is responsible for part of the "kick" from nicotine-the drug-induced feelings of pleasure. and, over time, addiction.Nicotine affects your brain development. This can make it harder to learn and concentrate. Some of the brain changes are permanent and can affect your mood and ability to control your impulses as an adult. Nicotine causes your blood vessels to constrict or narrow, which leads to cardiac problems.
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