When someone is addicted to a drug, the main cause of the change is emanating from the brain. The drug consumed by an addict affects the brain and it creates what is known as the reward circuit as explained by Houston Texas drug rehabs. This reward circuit leads to the sensation of euphoria in addition to releasing a chemical known as dopamine. This dopamine makes the addict feel good and he or she will love to have the experience again and that pushes the person to seek more drugs.

The reward system created in the brain creates a motivation for getting more drugs so that that sensation of euphoria can be created again. The reward system works normally in response to other regular bodily functions like eating and even seeing your family. The spike in dopamine levels as triggered by the consumption of drugs is what creates the need in the mind of the person to take more drugs as seen in addicts at Houston Texas drug rehabs.

As the sensation is a very pleasurable one, the addict will want to continue to take the drugs so that they can keep experiencing the sensation. The harmful consequence of this behavior is that before the person knows what is going on, he or she is already addicted and such person needs help from drug rehabs in Houston Texas.

As the addict continues to pump more drugs into the system, the brain develops what is called an adaptation. The brain does this by decreasing the ability of the cells to get triggered by the drug. Hence, the sensation that the addict enjoys is decreased when compared to the previous experiences and scientists describe this condition with the term ‘tolerance’.

When the body becomes tolerant of a substance, it means the person will have to take increasing quantities of the same drug to get the same sensation of euphoria which is called a high. The brain keeps adapting to the drug in such a way that the person does not even derive pleasure again from regular things like food, sex or even mingling with loved ones. All the attention of the drug addict will be one nothing else but the drug and that is precisely what makes drug addiction dangerous so they need to get help from drug rehabs in Houston Texas.