外研版英語必修三unit2重點(diǎn)單詞

外研版英語必修三unit2重點(diǎn)單詞

1.Nutrition:Thiswordreferstotheprocessofprovidingorobtainingthenecessaryfoodsubstancesforgrowth,health,andmaintenance.Itisalsothestudyofthesesubstancesandtheireffectonourbodies.

2.Balanceddiet:Adietthatcontainsallthenecessarynutrients,inproperproportions,formaintaininggoodhealth.

3.Junkfood:Foodthatishighincalories,fat,sugar,and/orsalt,butlowinnutritionalvalue.Examplesincludefastfood,chips,softdrinks,andcandy.

4.Obesity:Theconditionofbeingsignificantlyoverweight,tothepointwhereitmayhaveanegativeimpactonaperson'shealth.

5.Malnutrition:Aconditionthatresultsfromaninadequateorunbalanceddiet,causingapersontobecomeillorweak.

6.Vitamin:Organiccompoundsthatareessentialfornormalgrowth,metabolism,andoverallhealth.Theyaretypicallyobtainedthroughfood,asthebodycannotproduceenoughofthemonitsown.

7.Protein:Essentialmacronutrientsthataremadeupofaminoacids.Theyarenecessaryforthegrowth,repair,andmaintenanceofbodytissues.

8.Carbohydrate:Oneofthethreemainmacronutrients,alongwithproteinsandfats.Carbohydratesprovideenergyforthebodyandarefoundinfoodssuchasbread,rice,pasta,andfruits.

9.Fat:Anutrientthatprovidesenergyandhelpsthebodyabsorbcertainvitamins.Itisimportanttoconsumehealthyfatsinmoderation,asexcessiveconsumptioncanleadtoweightgainandotherhealthproblems.

10.Calorie:Aunitofmeasurementforenergy.ItrepresentstheamountofenergyrequiredtoraisethetemperatureofonegramofwaterbyonedegreeCelsius.

11.Fiber:Atypeofcarbohydratethatisnotdigestedbythebody.Itisimportantformaintainingahealthydigestivesystemandpreventingconstipation.

12.Nutrient:Asubstancethatprovidesnourishmentforthebody.Nutrientsincludecarbohydrates,proteins,fats,vitamins,minerals,andwater.

13.Digestion:Theprocessofbreakingdownfoodintosmallermoleculesthatcanbeabsorbedbythebody.Itstartsinthemouthwithchewingandendsinthesmallintestine.

14.Metabolism:Thechemicalprocessesthatoccurwithinalivingorganismtomaintainlife.Itincludesprocessessuchasdigestion,respiration,andenergyproduction.

15.Dietitian:Ahealthcareprofessionalwhospecializesinthestudyofnutritionanditseffectsonhealth.Theyprovideadviceandguidanceonhealthyeatinghabits.

16.Allergy:Aconditioninwhichthebody'simmunesystemreactstoaspecificsubstance,suchascertainfoodsorpollen.Commonsymptomsincluderashes,itching,anddifficultybreathing.

17.Organic:Referringtofoodproducedwithouttheuseofartificialchemicals,pesticides,orgeneticallymodifiedorganisms(GMOs).

18.Vegetarianism:Thepracticeofabstainingfromtheconsumptionofmeat,poultry,andseafood.Vegetariansmaystillconsumeanimalproductssuchaseggsanddairy.

19.Veganism:Alifestylethatavoidstheuseofanimalproductsinallareasoflife,includingfood,clothing,andcosmetics.

20.Superfood:Afoodthatishighlynutritiousandconsideredbeneficialforhealthandwell-being.Examplesincludeberries,nuts,andleafygreens.

21.Antioxidant:Asubstancethatinhibitsoxidation,therebyprotectingthebody'scellsfromdamagecausedbyfreeradicals.Antioxidantsarefoundinfruits,vegetables,andotherplant-basedfoods.22.BMI(BodyMassIndex):Ameasureofbodyfatbasedonanindividual'sweightandheight.Itisusedtoassesswhetherapersonisunderweight,normalweight,overweight,orobese.23.Detox:Aprocessorperiodoftimeinwhichapersonavoidsorremovestoxicsubstancesfromtheirbody,oftenbyfollowingaspecificdietorusingdetoxifyingproducts.24.Gluten-free:Referringtofoodthatdoesnotcontaingluten,aproteinfoundinwheat,barley,andrye.Peoplewithceliacdiseaseorglutensensitivityfollowagluten-freediet.25.Paleodiet:AdietaryplanbasedonthetypesoffoodsthatmighthavebeeneatenbyourancestorsduringthePaleolithicera.Itincludesleanmeats,fish,fruits,vegetables,nuts,andseeds.26.Ketogenicdiet:Ahigh-fat,adequate-protein,low-carbohydratedietthatforcesthebodytoburnfatsratherthancarbohydrates.Thiscanleadtoweightlossandmayhavehealthbenefitsforcertainindividuals.27.Intermittentfasting:Adietaryapproachthatcyclesbetweenperiodsofeatingandfasting.Itcanbedoneinvariousways,suchasthe16/8methodorthe5:2diet.28.Yogurt:Adairyproductmadebyfermentingmilkwithbacteria.Itisrichinprotein,calcium,andvitamins,andcanbeapartofahealthydiet.29.Smoothie:Athick,coldbeveragemadebyblendingfruits,vegetables,andotheringredientssuchasice,yogurt,orjuice.Smoothiescanbeanutritioussnackormealreplacement.30.Caffeine:Anaturalstimulantfoundincoffee,tea,cocoa,andotherproducts.Itcanhavebothpositiveandnegativeeffectsonhealth,dependingontheamountconsumed.31.Sugarsubstitute:Anartificialornaturalsubstanceusedtosweetenfoodanddrinks,asanalternativetosugar.Examplesincludeaspartame,stevia,andSplenda.32.Hydration:Theprocessofreplacingfluidsinthebody,usuallybydrinkingwaterorotherbeverages.Stayinghydratedisimportantformaintainingproperbodilyfunctions.33.Foodpyramid:Avisualrepresentationoftherecommendeddistributionofdifferentfoodgroupsinahealthydiet.Itsuggeststhetypesandamountsoffoodtoeateachday.34.Portioncontrol:Thepracticeofmanagingthequantityoffoodconsumedinameal.Itcanhelpwithweightmanagementandoveralldietarybalance.35.Foodlabel:Informationfoundonfoodpackagingthatprovidesdetailsaboutthenutritionalcontent,ingredients,andotherrelevantinformationabouttheproduct.36.GMO(GeneticallyModifiedOrganism):Anorganismwhosegeneticmaterialhasbeenalteredusinggeneticengineeringtechniques.GMOsarecommonlyfoundincropsandcanbepresentinfoodproducts.37.Sustainability:Theabilitytomaintaincertainpracticesorprocesseswithoutcausingharmtoth