转基因食品的危害英文

转基因食品的危害(英文)Haveyoueverheardoftomatoesthatareresistanttorot?Whathappenswhencornbecomesresistanttopests?Further,haveyoueverheardoforseengeneticallymodifiedfoods?Intheongoingbattleagainsthunger,foodproductionhasimprovedtechnologicallyovertheyearsandyieldshavecontinuedtorise.Butifthisincreaseinyieldislinkedtoatechnologyknownas"geneticmodification,"wouldyoueatfoodthathasincreaseditsyieldthroughtechnologicalmeans?RecombinantDNAtechnologyorgeneticengineeringisseenasanimportanttoolortechnologicalmeanstoimprovefoodqualityandcropyieldinthefieldoffoodandagriculture.Havingsaidallthat,whatdoesGMreallymean?Transgenemeanstakinga"targetgene"fromoneorganismandinsertingitintoanothergenecalledthetargetorganism.Forexample,ifresearcherswantAparticularorganism(organismA)toproduceanutrientthatitcannotinitsnaturalgrowingstate,theywilllookforanotherorganismthatcanproducethatparticularnutrient(organismB),andtheninsertagenefromorganismBthatcanproducethatparticularnutrient(thetargetgene)intoorganismA'sgene.ThemaingoalsofGMfoodsaretoincreaseyieldsandincreaseresistancetoplantandanimalpests.AlthoughsomeGMfoodshavebeenapprovedandpassedassafeasconventionalfoods,thecontinuedproductionofGMfoodsremainscontroversial.Didyouknowthatalthoughgeneticallymodifiedfoodshavethecharacteristicsneededbyhumans,theprocessofrecombinantDNAtechnologyispronetomutationsthatleadtounpredictablechangesintheproductionofDNAanditsproteins?Thescarythingisthatthe"targetgenes"cancomefrombacteria,insects,andanimalswithspecifictraits.So,strictlyspeaking,geneticallymodifiedfoodshavetheirharmfuleffects.Theharmofgeneticallymodifiedfoodtohumanbeings1.AllergicreactionsInhumans,thenumberonemostcommonsideeffectofeatingGMfoodsisallergicreactions.Thisallergicreactionoccurswhenacertainprotein(allergen)presentinageneticallymodifiedcropentersthebodyandstimulatesanimmuneresponse.Asmentionedearlier,geneticallymodifiedfoodsarecreatedbyinsertingaforeigngeneintoanorganism.Thisprocessisthoughttohaveadverseeffectsinhumansbecausetheseinsertedgenesmaycarryspecificallergensthattriggerthisimmuneresponse.Inaddition,thereareconcernsthatnewallergiesmaydevelopduetothemixingofgenesfromthetwoorganisms.Andbecausesomeoftheinsertedgenescomefrombacteriaandviruses,thepotentialforspreadingdiseaseisalsoaconcern.2.ToxinproductionGeneticallymodifiedtomatoGmfoodsmayalsoincreasetheirproductionoftoxinsatlevelsthatarealreadyharmfultohumans.Thismaybecausedbytoxinsproducedwhenthe"targetgene"isdamagedduringinsertion.Anotherreasoniswhentheinsertedgeneisnotuniversallyacceptedbytherecipientorganismbecauseitinterfereswithitsmetabolicpathways.Therefore,byconsumingthesefoodsthatcontaintoxins,thepossibilityofingestingtoxinsandbeingharmedbythemmayoccur.3.ReducednutritionalvalueIronically,itisreportedthatsomegeneticallymodifiedfoodshavenonutritionalvalue.Becausegeneticengineeringtendstobemorefocusedonincreasingyields,prolonginglifeanddeterringpests,thenutritionalvalueofcertaincropscansometimessuffer.Forexample,organicsoybeanshaveinfactbeenfoundtobemuchhigherinnutrients(suchashealthysugars,proteins,selenium,andzinc)thangeneticallymodifiedsoybeans.Thefindingalsosuggeststhatbymakingplantsmoreresistanttopests,antioxidantphytochemicalsarereduced.Sobygeneticallymodifyingfood,quantitysuffersmorethanquality.Theharmofgeneticallymodifiedfoodtotheenvironment4.ReleasetoxinsintothesoilToxinsinsoilAsyoucansee,theharmofgeneticallymodifiedcropsgoesbeyonddamagingourhealth.Regardingtheirenvironmentalimpact,toxicityisabigconcernwithGMcrops.AfamousexampleisBtcorn,whichisknownforitsresistancetoinsects.InsertingBacillusthuringiensis(Bt),asoilbacteriumwhosegenesproducecertainproteintoxinsthatareeffectiveagainstpests,intocornmakesitmoreresistanttopests.Whilethispropertyhelpscontrolpests,itcanleadtothereleaseofsaidtoxinsintothesoil.Toomanytoxinsinthesoilcanpreventthegrowthofbacterianecessaryforplantgrowth.Asaresult,thesoilbecomesstarvedofallnecessarynutrients.5.PestsdevelopresistancetotoxinsBeyondthat,thelong-termeffectsofGmosareuncertain.Scientistsareconcernedthatovertime,overproductionofgeneticallymodifiedfoodswithtoxin-producingpropertieswillbecomeineffective.Thisisbecausethepeststhesetoxinsareusedtodetermayeventuallydevelopresistancetothem.6.DestructionofbiodiversityTheproductionofgeneticallymodifiedfoodsposesahighriskofdamagetobiodiversity.Thisisbecauseengineeredgenesproduce"better"traitsthatmaybenefitanorganism.Inaddition,theintroductionofGmoswilleventuallydisruptthenaturalprocessofgeneflow.Whatdoesthatmean?DisruptedgeneflowcanalsocausetheseGMcropstobecomeweedsbecausetheyreproducesoquicklyandcompetewithothercrops.HowtoavoidgeneticallymodifiedfoodItinvolvessocialandmoralissuesInadditiontohealthandenvironmentalconcerns,theproductionofgeneticallymodifiedcropsandanimalshasbecomethecenterofsocialandethicaldebate.Fornow,decipheringitslong-termeffectsremainschallenging,soit'sentirelyunderstandablethatconsumersareconcernedaboutsafety.Itcanbesaidthateveryfoodhasitsassociatedhealthbenefitsandrisks.AfterunderstandingalltheaforementionedhazardsofGMfoodsandcropsnotonlytohumanhealthbutalsototheenvironment,thedecisionisentirelyuptoyou.Areyoustillwillingtotakethatrisk?

您听说过耐腐烂的西红柿吗？玉米对害虫有抵抗力会怎么样？进一步来说，您听说过或者见过转基因食品吗？在人类与饥饿的持续斗争中，粮食生产多年来在技术上得到了更多改进，产量也持续提高。但是，如果这种产量的提高与被称为“转基因”的技术有关，您会吃这种通过技术手段而提高产量的食物吗？重组DNA技术或基因工程被视为提高粮食和农业领域食品质量和作物产量的重要工具或技术手段。说了这么多，那么转基因到底意味着什么呢？转基因意味着从一种生物体中提取“目的基因”并将其插入另一被称为目标生物体的基因中。例如，如果研究人员想让一种特定的生物体（A生物体）产生一种它自然生长状态下无法产生的营养物质，他们将寻找另一种可以产生这种特定营养素的生物体（B生物体），然后将B生物体中的能产生特定营养素的基因（目的基因）插入A生物体的基因中。转基因食品的主要目标是提高产量和增强对动植物害虫的抗性。尽管一些转基因食品已经获得批准并通过，作为传统食品是安全的，但转基因食品的继续生产仍然存在争议。您是否知道，尽管转基因食品具有人类所需要的特征，但是，重组DNA技术的过程很容易发生突变，从而导致DNA及其蛋白质产生的不可预测的变化。可怕的是，“目的基因”可能来自具有特定性状的细菌、昆虫和动物。所以严格来说，转基因食品是具有其有害影响的。转基因食品对人类的危害1.过敏反应在人类中，食用转基因食品最常见的第一大副作用是过敏反应。当转基因作物中存在的某种蛋白质（过敏原）进入体内并刺激免疫反应时，就会发生这种过敏反应。如前所述，转基因食品是通过将外来基因插入生物体而创造的。这个过程被认为对人类有不利影响，因为这些插入的基因可能携带触发这种免疫反应的特定过敏原。此外，人们还担心由于两种生物体的基因混合而可能发生新的过敏。而且由于一些插入的基因来自细菌和病毒，传播疾病的可能性也令人担心。2.毒素的产生转基因西红柿转基因食品也可能增加其毒素的产生，其水平已经对人类有害。这可能是由于插入过程中“目的基因”受损时产生的毒素造成的。另一个原因是当插入的基因不被受体生物体普遍接受时，因为它会干扰其代谢途径。因此，通过食用这些含有毒素的食物，可能会发生摄入毒素并受到其伤害的可能性。3.营养价值降低具有讽刺意味的是，据报道，一些转基因食品没有营养价值。由于基因工程往往更侧重于增加产量、延长寿命和阻