Causes

Nicotine is the chemical in tobacco that keeps you smoking. Nicotine reaches the brain within seconds of taking a puff. In the brain, nicotine increases the release of brain chemicals called neurotransmitters, which help regulate mood and behavior.

Dopamine, one of these neurotransmitters, is released in the reward center of the brain and causes feelings of pleasure and improved mood.

The more you smoke, the more nicotine you need to feel good. Nicotine quickly becomes part of your daily routine and intertwined with your habits and feelings.

Common situations that trigger the urge to smoke include:

• Drinking coffee or taking breaks at work
• Talking on the phone
• Drinking alcohol
• Driving your car
• Spending time with friends

To overcome your nicotine dependence, you need to become aware of your triggers and make a plan for dealing with them.