When you get paid your salary, when your football team beats a fierce rival or when you get promoted at work – you likely feel so good, you can almost touch the sky.

The good feeling you get from the above scenario is your brain at work and because natural pleasures in our lives are necessary for survival, the limbic system creates an appetite that drives you to seek out those things.

For first time drug users, the feelings of pleasure can be intense and unatural, so the reward circuitry of the brain is activated, dopamine is then released.

Drugs have other effects. For instance, a first-time smoker also may cough and feel nauseated from toxic chemicals in a tobacco or marijuana cigarette. But the brain starts changing as a result of the unnatural flood of neurotransmitters.

Read full article from source: http://priceless.com.ng/2016/10/14/how-drug-addiction-works/