The research and the experiments that were conducted decades ago have help scientists to understand the mechanism of the effects of an addiction. It is known that in every individual the addiction to any psychotropic substance manifests itself in different ways. Some people can get easily addicted while other people need time to get addicted to drugs. There are many psychotropic drugs that may cause addiction. These drugs are: depressants and alcohol, drugs in the opioid group including heroin, morphine and methadone, nicotine, and many other drugs.
The addiction may arise if the user feels a steady need for taking the substance that gives him pleasure and satisfaction or removes the discomfort or pain. In every moment in the human brain special chemical reactions take place. Narcotics, drugs and alcohol affect these reactions.
As a rule, the feelings that people experience after taking a drug is close to euphoria. People feel a mild and pleasurable reaction of relaxation and all the forces that have tormented a person go away, the forces raise, and your creative powers are activated. But, this feeling may only be received at the beginning stage of using when there is no psychological dependence, no physiological tolerance, and no withdrawal.
The mechanism of physical dependence is connected with the influence of narcotics on the hormones and the endorphins that are responsible for our positive emotions and stopping the pain. In this case, narcotics act by mimiking endorphins. What does this mean? Every people have in their brain those special chemicals that are called endorphins. Without these hormones, we can't experience joy, happiness, pleasure, and satisfaction, they help stop the pain and help us to relax. We can't resist the stressful situations that happen in our life. Endorphins block the receptors that are responsible for pain, hunger, thirst, and other feelings.
Alcohol and drugs play a role in substituting the endorphins and stimulating the brain to produce more hormones. Mimiking endorphins, narcotics kill the natural reactions and processes of the human nervous system and they can't go back as they were before. Even after the first dose of any substance the brain will make a smaller number of endorphins. In an attempt to restore the lost hormones, you will be willing to take another dose. The pleasure finishes when the narcotic effect stops mimiking endorphins. Has stopped working and the individual has to keep his form. Therefore, the physical dependence develops.
There may be many reasons why a person develops a tendency to use drugs or alcohol. The deep motive is the crisis that develops inside of a person, it is a way to escape reality, and to not to be so lonely and unhappy. Some people try to find the answers to their questions by means of escaping the real world into the world of unnatural and doubtful values. With the help of narcotics and alcohol, and mimiking endorphins they violate their health both physically and mentally.