Addiction Mechanism and Drug Tolerance — NEET Biology
📚 Practice ConceptBecause of the perceived benefits, drugs are frequently used repeatedly. The most important thing, which one fails to realise, is the inherent addictive nature of alcohol and drugs. Addiction is a psychological attachment to certain effects – such as euphoria and a temporary feeling of well-being – associated with drugs and alcohol. These drive people to take them even when these are not needed, or even when their use becomes self-destructive. With repeated use of drugs, the tolerance level of the receptors present in our body increases. Consequently the receptors respond only to higher doses of drugs or alcohol leading to greater intake and addiction. However, it should be clearly borne in mind that use of these drugs even once, can be a fore-runner to addiction. Thus, the addictive potential of drugs and alcohol, pull the user into a vicious circle leading to their regular use (abuse) from which he/she may not be able to get out. In the absence of any guidance or counselling, the person gets addicted and becomes dependent on their use.
Which of the following statements are NOT correct regarding addiction, dependence, and adolescence vulnerability to drug abuse? S1: Adolescence is a highly vulnerable phase for drug abuse due to curiosity and the perceived 'coolness' of substance use. S2: With repeated use of drugs, the body's tolerance level of receptors decreases, requiring smaller doses for the same effect. S3: Addiction refers to a physical withdrawal syndrome, whereas dependence is a psychological attachment to the drug's effects. S4: Drug dependence can be severe, potentially life-threatening, and often requires medical supervision during withdrawal. S5: Even a single instance of drug use can initiate the path to addiction due to the inherent addictive potential of these substances. S6: Unstable family structures and academic pressures are contributing factors to drug and alcohol abuse among adolescents.
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