Addiction is a physical or mental attraction to a thing or behavior that makes you want to keep doing it, even though the consequences are harmful. When you are addicted to a substance, you want more of it night and day, every day, seven days a week. You lose control of your life , control of your money, and control of your behavior.
Most smokers use tobacco regularly because they are addicted to nicotine.
Addiction is characterized by compulsive drug-seeking and use , even in the face of negative health consequences, and tobacco use certainly fits the description. It is well documented that most smokers identify tobacco as harmful and express a desire to reduce or stop using it, and nearly 35 million of them make a serious attempt to quit each year. Nicotine itself is an extremely harmful and addictive chemical. It has been compared to cocaine or heroin in its addictive power. Smokeless tobacco products such as snuff and chewing tobacco also contain many toxins as well as high levels of nicotine.