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Essay/Term paper: Drug dependence

Essay, term paper, research paper:  Alcohol and Drugs

Free essays available online are good but they will not follow the guidelines of your particular writing assignment. If you need a custom term paper on Alcohol And Drugs: Drug Dependence, you can hire a professional writer here to write you a high quality authentic essay. While free essays can be traced by Turnitin (plagiarism detection program), our custom written essays will pass any plagiarism test. Our writing service will save you time and grade.



Drug Dependence


In order for a chemical to be considered a drug it must have the capacity to
affect how the body works--to be biologically active. No substance that has the
power to do this is completely safe, and drugs are approved only after they
demonstrate that they are relatively safe when used as directed, and when the
benefits outweigh their risks. Thus, some very dangerous drugs are approved
because they are necessary to treat serious illness. Digitalis, which causes the
heart muscle to contract, is a dangerous drug, but doctors are permitted to use
it because it is vital for treating patients whose heart muscle is weak. A drug
as potent as digitalis would not be approved to treat such minor ailments as
temporary fatigue because the risks outweigh the benefits.
Many persons suffer ill effects from drugs even though they take the drug
exactly as directed by the doctor or the label. The human population, unlike a
colony of ants or bees, contains a great variety of genetic variation. Drugs are
tested on at most a few thousand people. When that same drug is taken by
millions, some people may not respond in a predictable way to the drug. A person
who has a so-called idiosyncratic response to a particular sedative, for example,
may become excited rather than relaxed. Others may be hypersensitive, or
extremely sensitive, to certain drugs, suffering reactions that resemble
allergies.
A patient may also acquire a tolerance for a certain drug. This means that
ever-larger doses are necessary to produce the desired therapeutic effect.
Tolerance may lead to habituation, in which the person becomes so dependent upon
the drug that he or she becomes addicted to it. Addiction causes severe
psychological and physical disturbances when the drug is taken away. Morphine,
cocaine, and Benzedrine are common habit-forming drugs. Finally, drugs often
have unwanted side effects. These usually cause only minor discomfort such as a
skin rash, headache, or drowsiness. Certain drugs, however, can produce serious,
even life-threatening adverse reactions. For example, the drug Thalidomide was
once called one of the safest sedatives ever developed, but thousands of women
in the United Kingdom who took it during pregnancy gave birth to seriously
deformed babies. Other adverse reactions stem from mixing drugs. Thus, taking
aspirin, which has blood-thinning qualities, for a headache can be very harmful
if one is also taking other blood-thinning drugs such as heparin or dicumarol.

 

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