1. Nicotine is a highly addictive chemical found in tobacco products such as cigarettes, cigars, chewing tobacco, and e-cigarettes. It is the primary psychoactive component of tobacco and is responsible for the pleasurable sensations associated with smoking.
2. Nicotine acts as a stimulant on the central nervous system, increasing alertness and heart rate. It also constricts blood vessels, reduces appetite, and increases metabolism.
3. Long-term use of nicotine can lead to an increased risk of cancer, heart disease, stroke, and other serious health complications. It can also be passed on to unborn children, leading to developmental and behavioral issues.