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——肥胖（obesity）PreviewquestionsPreviewquestionsContents(内容)ThecausesforobesityThecausesforobesityTheeffectsofobesityTheeffectsofobesityThebodymassindexThebodymassindexPreventionandtreatmentPreventionandtreatmentPreviewquestionsDoyouconcernaboutyourweight?Whatdoyouthinkoffat?Isitgoodornot?Doyouwanttoloseweight?Iamsofat!Thecausesforobesity:obesitytoomanyhigh-fat/high-caloriefoodlackofexerciseType2diabetesTheeffectsofobesity:shorterlifespanObesityPsychologicalproblemsnegativeself-imagelowself-esteemeatingdiseases,bullying,depression,feelingoflonelinessandnervousnessThebodymassindex(BMI)Itisworkedoutbydividingaperson’sweightinkilogramsbytheirheightinmeterssquared.Forexample:MyBMI:45/1.62=17.58myheightmyBMImyweightBMI:BodyMassIndex(BMI)guideforpeopleaged18andoverBMI(kg/m)Lessthan20UnderweightOver20to25DesirableorhealthyrangeOver25to30OverweightOver30to35Obese(class1）Over35to40Obese(class2)Over40Severelyobese(class3)Prevention1.Keepahealthybalanceddiet2.RegularexerciseTreatment1.Losingweight2.Beingmoreactive3.Walking4.SportsConclusion1.Obesityisaseriousproblem2.Thewaystopreventandtreatobesity