Nicotine is the natural, highly-addictive substance in tobacco, and it takes as little as seven seconds to reach the brain after you inhale a drag from a cigarette or other device, according to the World Health Organization.
Once it reaches our brains, nicotine can dramatically raise the activity level of feel-good chemical signalers deep in our brain’s reward system.
This key effect is actually what all abused drugs, including nicotine, appear to have on our brains.
As a result, using nicotine or other addictive drugs doesn’t just make us feel euphoric – it also makes us want to use again.
- Column Five