An estimated 20.9 percent of American adults, or 45.1 million people, were current smokers in 2005 (CDC 2006b)
Abstract Tobacco products are widely recognized as a major contributor to death
The brain-effect differences between nicotine, cocaine, heroin, morphine Dopamine is essential for survival as it is involved in so many functions including motivation, learning and memorization, since the beginning of time
Over time, the brain becomes dependent on this artificial surge of dopamine, and the smoker develops both a physical and psychological reliance on nicotine
Hookah [edit] Muassel (also known as shisha ), the tobacco product used in hookahs, is almost always flavored: more than 85% of mu'assel sold in the United States is flavored