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1、PartOneReadthefollowingarticlesbeforeansweringthecorrespondingquestions.HerbalHealing Feelingalittledepressed?YoucouldgetaprescriptionforProzacortrypsychotherapy.But7.5millionAmericansinthepastyearhaveinsteadgulpeddownanextractmadefromabrightyellowflowercalledSt.John'sw
2、ort-availablewithoutaprescriptionathealth-foodshopsandsomebigretailstores.Feartheonsetofcoldandfluseason?Youcouldgetaflushot.Or,like7.3millionAmericans,youcouldswallowacapsulemadefromEchinacea,apurple-petaleddaisynativetotheMidwest.Worriedthatyourmemoryisfading?Thenwrit
3、edownthisname:ginkgobiloba.It'smadefromthefan-shapedleafofatreefoundfromChinatoSouthCarolina,and10.8millionAmericansregularlyremindthemselvestotakeit.Whethertheyseektobrightentheirmoods,staveoffdisease,revuptheirsexlivesorretaintheiryouth,moreandmorepeoplearesupplementi
4、ngandreplacingprescriptionmedicineswithaprofusionofpillsandpotionsthatcontainvariousmedicinalherbs,vitaminsandminerals.Someareprovensafeandeffective;manyarenot.Americansspentmorethan$12billiononnaturalsupplementslastyear-nearlydoubletheamountspentin1994,andsalescontinue
5、togrowbymorethan10%ayear.Thefranticexpansionofthemarketforherbsandothersupplements,though,comesatsomerisktoconsumers.TheseproductsarenotregulatedintheU.S.nearlyasstrictlyasover-the-counterdrugsorevenfoods-insharpcontrasttocountrieslikeGermany,wherethegovernmentholdscomp
6、aniestostrictstandardsforingredientsandmanufacturing.ExpertssaythatwhilethetopU.S.andEuropeanproducerspaycloseattentiontothesafety,effectivenessandconsistencyoftheirproducts,partsoftheindustryresembleaWildWestboomtown,wheresome800lightlyregulatedU.S.companiescompetefero
7、ciouslywithfly-by-nighthucksters."Whenyouopenabottleofnutritionalsupplements,youdon'tknowwhat'sinside,"saysJeffreyDelafuente,apharmacyprofessoratVirginiaCommonwealthUniversityinRichmond."Theremaybesomeingredientsnotlisted.Youdonotknowhowmuchactiveingredientisineachtable
8、t.Theycanmakeallkindsofclaimsthatmaynotbeaccurate."TheU.S.governmentisawareoftheproblemandistakingstepstoensur
