How Nicotine Hooks Smokers

Tobacco Addiciton

From American Cancer Society:

Nicotine 

Nicotine is a drug found naturally in tobacco. It is as addictive as heroin or cocaine. Over time, a person becomes physically and emotionally addicted to (dependent on) nicotine. Studies have shown that smokers must deal with both physical and psychological (mental) dependence to quit and stay quit. 

How nicotine gets in, where it goes, and how long it stays.

When you inhale smoke, nicotine is carried deep into your lungs. There it is quickly absorbed into the bloodstream and carried throughout your body. Nicotine affects many parts of the body, including your heart and blood vessels, your hormones, the way your body uses food (your metabolism), and your brain.

Nicotine can be found in breast milk and even in mucus from the cervix of a female smoker. During pregnancy, nicotine freely crosses the placenta and has been found in amniotic fluid and the umbilical cord blood of newborn infants. 

Different factors affect how long it takes the body to remove nicotine and its by-products. In most cases, regular smokers will still have nicotine or its by-products, such as cotinine, in their bodies for about 3 to 4 days after stopping. 

How nicotine hooks smokers 

Nicotine causes pleasant feelings that make the smoker want to smoke more. It also acts as a kind of depressant by interfering with the flow of information between nerve cells. Smokers tend to increase the number of cigarettes they smoke as the nervous system adapts to nicotine. This, in turn, increases the amount of nicotine in the smoker's blood. In fact, nicotine inhaled in cigarette smoke reaches the brain faster than drugs that enter the body through a vein (intravenously or IV). 

After a while, the smoker develops a tolerance to the drug. Tolerance means that it takes more nicotine to get the same effect that the smoker used to get from smaller amounts. This leads to an increase in smoking over time. The smoker reaches a certain nicotine level and then keeps smoking to maintain this level of nicotine. 

Nicotine withdrawal symptoms can lead quitters back to smoking 

When smokers try to cut back or quit, the lack of nicotine leads to withdrawal symptoms. Withdrawal is both physical and mental. Physically, the body reacts to the absence of nicotine. Mentally, the smoker is faced with giving up a habit, which calls for a major change in behavior. Both the physical and mental factors must be addressed for the quitting process to work. 

Those who have smoked regularly for a few weeks or longer, and suddenly stop using tobacco or greatly reduce the amount smoked, will have withdrawal symptoms. Symptoms usually start within a few hours of the last cigarette and peak about 2 to 3 days later when most of the nicotine and its by-products are out of the body.

Withdrawal symptoms can last for a few days to up to several weeks. They will get better every day that you stay smoke-free. 

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