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1、 肥胖（肥胖（ obesity obesity ）Preview questionsContents(内容内容)The causes for obesity The effects of obesity The body mass index Prevention and treatment Preview questionsDo you concern about your weight ?What do you think of fat ? Is it good or not ?Do you want to lose weight ?I am so fat !The causes for
2、obesity:obesitytoo many high-fat/too many high-fat/high-calorie foodhigh-calorie foodlack of exerciselack of exerciseType 2 diabetesType 2 diabetesThe effects of obesity: shorter lifespan Obesity Psychological problems negative self-imagelow self-esteemeating diseases, bullying, depression, feeling
3、of loneliness and nervousnessThe body mass index (BMI) It is worked out by dividing a persons It is worked out by dividing a persons weight in kilograms by their height in weight in kilograms by their height in meters squared.meters squared. For example:For example: My BMI:45 / 1.62= 17.58 my height
4、my BMImy weight BMI:Body Mass Index (BMI) guide for people aged 18 and overBMI(kg/m)Less than 20UnderweightOver 20 to 25Desirable or healthy rangeOver 25 to 30OverweightOver 30 to 35Obese( class 1）Over 35 to 40Obese(class 2)Over 40Severely obese (class3)Prevention 1.Keep a healthy balanced diet 2.Regular exerciseTreatment1.Losing weight2.Being more active3.Walking4.SportsConclusion 1.Obesity is a serious problem2.The ways to prevent and treat obesity