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时间:2019-10-09
《Low-Fat Diets Alone Do Not Reduce Health Risks》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、Low-FatDietsAloneDoNotReduceHealthRisksOnourprogramthisweek:WetellaboutadiscoverymadeonamountainineasternIndonesia.Wealsowilltalkaboutareportonthevalueofcalciuminthehumandiet.Agolden-mantledtreekangaroo,oneofthecreaturesfoundina'GardenofEden'ontheislandofNewGuineaVOICE
2、ONE:Butfirst,wetellaboutlow-fatdietsandtheireffectsinwomen.(MUSIC)AnAmericanstudyhasexaminedtheeffectsofalow-fatdietonthehealthofwomen.Thestudyfoundthatsuchadietdoesnotreducetheriskofatleastonekindofcancer,heartdiseaseorstroke.Foryears,medicalexpertshavethoughtthatadie
3、tthatislowinfathelpsreducetheriskofcancerandheartdisease.ResearcherswithAmerica'sNationalInstitutesofHealthcreatedastudytotestthistheory.Itisoneofthelargeststudieseverdoneonthissubject.Theresearchersstudiedthehealthofalmostfiftythousandwomenforeightyears.Thesewomenwere
4、betweentheagesoffiftyandseventy-nineyears.VOICETWO:Thewomeninonegroupreducedthefatintheirdiettotwentypercentoftheirtotaldailyfoodsupply.Theyalsoincreasedtheirdailyservingsofvegetables,fruitsandgrains.Anothergroupofwomendidnotmakeanydietarychanges.Theresearcherscompared
5、thetwogroups.Theresultsofthestudyshowthedifferentdietshadlittleeffectonthehealthofthewomen.Bothgroupshadthesameratesofheartdiseaseandcolorectalcancer.Theresearcherssaidthewomenwhofollowedthelow-fatdietmighthavelessriskofbreastcancer.Butthedifferencewassosmallthatitisno
6、tconsideredimportant.VOICEONE:Expertssaytheresultsareimportantforbothmenandwomen.Somecriticsofthestudyfearmanypeoplewillthinkthatdietisnotimportant.Otherstudieshaveshownthatahealthfuldietisstillimportant,butsoareotherchoices.Forexample,exercising,avoidingsmoking,andkee
7、pinganormalbodyweightarealsonecessaryforgoodhealth.Otherexpertsnotedthestudycalledforreducingtotalfatinsteadofthekindsoffatsthatarenothealthful.Forexample,fatsinsomefoodslikefishandnutsareconsideredgoodforhumanhealth.Unhealthfulfatsincludesaturatedandtransfats.Thestudy
8、didnotnotedifferencesbetweenthesetwokindsoffat.Expertsalsosaidthatdietarychangesmightneedtobeginearlierinlifetohaveag
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