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QUESTION: In people who are overweight or clinically obese and who are dieting for the purpose of weight reduction, is advice on low fat diets more effective than other weight-reducing diets for achieving sustained weight loss?
Data sources
Studies were identified by searching the Cochrane Library, Medline (up to February 2002), EMBASE/Excerpta Medica (up to February 2002), Science Citation Index (up to January 2001), and by reviewing bibliographies of relevant articles.
Study selection
Studies were selected if they were randomised controlled trials (RCTs) with ≥6 months follow-up that compared advice on low-fat diets (treatment group) with other weight reducing diets (control group), the primary purpose of the study was weight loss, and participants were adults (≥18 y of age) who were overweight or obese (body mass index >25 kg/m2) at baseline. RCTs …
Footnotes
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Source of funding: no external funding.
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For correspondence: S Pirozzo, University of Queensland, Herston, Queensland, Australia. Email s.pirozzo{at}sph.uq.edu.au.