Topics
	Addiction
	In your body
	"It Won't Happen to Me"
	Replacement & Medication
	Withdrawal

Nicotine

Nicotine is the drug responsible for making cigarettes so addictive. It makes your body crave more cigarettes and that means inhaling all those gross chemicals. Studies have shown that the nicotine habit can be as hard to break as heroin or cocaine addiction. Within seven seconds of inhaling on a cigarette, the nicotine reaches your brain, stimulating the nervous system, increasing heart rate, raising blood pressure and constricting small blood vessels under the skin.