👉 Nicotine is a chemical in tobacco plants that acts as an addictive substance. It is primarily found in cigarettes and can produce withdrawal symptoms such as coughing, shortness of breath, heart palpitations, nausea, and sweating. Nicotine has been linked to various health problems such as lung cancer, cardiovascular disease, and addiction. The term "nicotism" refers to the phenomenon where people are drawn to or attracted to substances that contain nicotine or other addictive chemicals due to their perceived pleasant effects or