The Science of Addiction

There are many different drugs that affect the brain pathways in many different ways. All are damaging to the brain. Most of the drugs have a chemical that will go into the brain pathways and release and excessive amount of dopamine and it doesn't let it stop. They will block the exits for dopamine, so that the person will remain happy and like to use these drugs because they like the happy sensation when they are using them. Many of the drugs are highly addictive and do more damage over time. For example cigarettes have nicotine in them which is a chemical that causes the brain to want that chemical. That is why many people smoke, because once they start the brain sends signals to the body saying that they want this and the feeling is so strong that people have to smoke a cigarette or else they can have terrible lose of nicotine in their body and freak out. All drugs will trick the brain into wanting more. Any one who does drugs may want to quit but can't because of their addictive force.