Drug abuse causes the brain to change its structure and function to adapt to the effects of the drug, this change in structure and function of brain may sometimes cause irreversible damage to the brain such as memory loss etc. However, the initial decision to abuse drugs or try drugs for the first time is often voluntary to some extent as peer pressure, social and cultural environment also play its part. (Drugabuse,2012)
The common signs of drug addiction are avoiding social contact with non-users, feeling irritable, isolated and depressed …show more content…
This happens because the body develops tolerance to the drug. The changes in the structure and chemical function of the brain causes the person to become addicted to drugs.
In such cases, medical intervention and also sometimes family intervention is required for the addicted individual to overcome drug addiction.
Drugs interfere with the chemical reactions in the brain and disrupt them by cutting off the chemical impulses or by making the chemical impulses overactive and faster. These chemicals in the brain are called dopamine and Gaba.
When the individual is abusing the drug, the dopamine secretions in the brain surges to give the abuser a feeling of euphoria. Repeated abuse of the drug causes the brain to adapt to this large supply of dopamine and therefore reduces the natural production of dopamine in the brain. Therefore, when the drug is being withdrawn, there is a deficiency of dopamine in the brain due to the reduced production of dopamine in the brain and this causes the person to feel irritated, depressed and …show more content…
There are lots of factors to consider these situations, such as, genes, environment, age etc. Gender, ethnicity, culture and mental disorders may influence drug addiction as