Facts
Nicotine addiction facts inform us that each puff of a cigarette transmits nicotine to the brain within 10 seconds and instantly, you feel more alert and calm. You feel better, so you have another puff. And another. Nicotine combines with various neurotransmitters in brain, for example, dopamine, norepinephrine, serotonin, vasopressin, acetylcholine, etc.