title: Pharmacologic prevention or delay of type 2 diabetes mellitus.
abstract: OBJECTIVE
  To evaluate the current data on pharmacologic interventions intended to prevent or delay the onset of type 2 diabetes mellitus.
  
  
  METHODS
  Searches of MEDLINE (1966-July 2002) and an extensive manual review of journals were performed using the key search terms diabetes mellitus, metformin, acarbose, troglitazone, orlistat, nateglinide, risk reduction, and prevention.
  
  
  METHODS
  All articles identified from the data sources were evaluated, and all information deemed relevant was included for this review. Randomized controlled trials and meta-analyses were included if the primary outcome measure was prevention of diabetes and/or change in the rate of progression to diabetes.
  
  
  RESULTS
  Type 2 diabetes mellitus is a growing epidemic. Major risk factors include obesity, impaired glucose tolerance, and impaired fasting glucose. Complications of diabetes result in significant morbidity and mortality and are a substantial public health issue. Four randomized, blinded, controlled trials have assessed the efficacy of different medications, including metformin, troglitazone, acarbose, and orlistat, at decreasing the risk of progression to diabetes in patients at risk for developing diabetes. All of these agents decreased the risk of progression to diabetes.
  
  
  CONCLUSIONS
  Metformin, troglitazone, acarbose, and orlistat have been shown to decrease the risk of progression to diabetes in patients at risk for developing diabetes. Other questions that address issues such as identifying target populations, cost-effectiveness, and screening strategies must be answered to more fully define the place of pharmacologic therapy to prevent or delay diabetes.
authors.affiliation: Southwest Georgia Pharmacy Program, Department of Clinical and Administrative Pharmacy, College of Pharmacy, University of Georgia, Athens, GA, USA. danderso@mail.rx.uga.edu
authors.forename: Douglas C
authors.initials: DC
authors.lastname: Anderson
mesh_terms: D020909:Acarbose / Q000627:therapeutic use; D002839:Chromans / Q000627:therapeutic use; D003924:Diabetes Mellitus, Type 2 / Q000517:prevention & control*; D006801:Humans; D007004:Hypoglycemic Agents / Q000627:therapeutic use*; D007783:Lactones / Q000627:therapeutic use; D015201:Meta-Analysis as Topic; D008687:Metformin / Q000627:therapeutic use; D000077403:Orlistat; D016032:Randomized Controlled Trials as Topic; D045162:Thiazolidinediones / Q000627:therapeutic use; D000077288:Troglitazone
chemical_list: D002839:Chromans; D007004:Hypoglycemic Agents; D007783:Lactones; D045162:Thiazolidinediones; D008687:Metformin; D000077403:Orlistat; D000077288:Troglitazone; D020909:Acarbose