For some people, using any amount of tobacco can quickly lead to nicotine dependence. Signs that you may be addicted include:  You can't stop smoking. You've made one or more serious, but unsuccessful, attempts to stop. You have withdrawal symptoms when you try to stop. Your attempts at stopping have caused physical and mood-related symptoms, such as strong cravings, anxiety, irritability, restlessness, difficulty concentrating, depressed mood, frustration, anger, increased hunger, insomnia, constipation or diarrhea. You keep smoking despite health problems. Even though you've developed health problems with your lungs or your heart, you haven't been able to stop. You give up social activities. You may stop going to smoke-free restaurants or stop socializing with family or friends because you can't smoke in these situations. 
people  using amount tobacco can quickly lead nicotine dependence  signs may addicted include:  can't smoking  you've made serious  unsuccessful  attempts stop  withdrawal symptoms try stop  attempts stopping caused physical mood-related symptoms  strong cravings  anxiety  irritability  restlessness  difficulty concentrating  depressed mood  frustration  anger  increased hunger  insomnia  constipation diarrhea  keep smoking health problems  you've developed health problems lungs heart  haven't able stop  give social activities  may going smoke-free restaurants socializing family friends can't smoke situations
nicotine dependence