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A Small Part of the Brain, and Its Profound Effects Cigarette Addiction Affects Men, Women's Brains Differently; Brain Scans Reveal Need For Tailored Treatment How smoking affects you Nebraska Medicine Omaha, NE Brains of smokers who quit successfully might be wired for success What Happens When You Smoke? Cigarettes contain nicotine, tar, and carbon monoxide. Short term effects: Increased heart rate Higher blood pressure Reduced oxygen Long term effects: Lung cancer Understanding how habits work, especially with smoking, requires looking at the brain's reward system and how it forms automatic behaviors. At the heart of this process is dopamine, a neurotransmitter responsible for

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