Occasional self-medication has always been part of normal living. The and selling of drugs has a long history and is closely (36) with belief in magic. The doctor is now able to follow up the correct (37) of many illnesses with specific treatment of their (38) . In many other illnesses, of which the causes remain unknown, he is still limited, like the (39) prescrber, to the treatment of symptoms. The doctor is trained to decide when to treat symptoms only and when to (40) the cause: this is the essential difference between medical prescribing and self-medication. The (41) of technology had brought about much progress in some fields of medicine. In many countries public health organization is improving, and people’s nutritional (42) have risen. Parallel with such (43) trends are two which have an unpleasant effect. One is the use of high pressure advertising by the pharmaceutical industry(制药业), which (44) . The other is the emergence of the sedentary(久坐不动的) society with its faulty way of life: (45) People with disorders arising from faulty habits such as these, as well as from unhappy human relationship, (46) .