Psychological effects nicotine

Mild cases of alkaloid poisoning can produce psychological effects that resemble peacefulness, euphoria, or hallucinations. People seeking these effects often become addicted to alkaloids. Alkaloid addiction frequently ends in death. Current estimates are over 400,000 deaths from alkaloid addiction in the United States per year, including both natural alkaloids like nicotine and cocaine, and synthetic alkaloids like metham-phetamine. Most of these deaths result from addiction to nicotine in tobacco, a particularly difficult addiction to overcome. 

Behavioral and Psychological Effects Interactions among Caffeine, Nicotine, and Alcohol... 

The use of tobacco is addictive. Most users develop tolerance for nicotine and need greater amounts to produce a desired effect. Smokers become physically and psychologically dependent and will suffer withdrawal symptoms including changes in body temperature, heart rate, digestion, muscle tone, and appetite. 

Todd, M. (2004). Daily processes in stress and smoking Effects of negative events, nicotine dependence, and gender. Psychology of Addictive Behaviors, IS, 31-39. 

Chronic nicotine ingestion may lead to physical and psychologic dependence and tolerance to some of its pharmacologic effects. Abrupt smoking cessation in physically dependent smokers results in... 

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