Impact of interventions to reduce overnutrition on healthcare costs related to obesity and type 2 diabetes: a systematic review

Author:

Olm Michaela123,Stark Renée G2ORCID,Beck Nathanael4,Röger Christina5,Leidl Reiner24

Affiliation:

1. Institute for Medical Information Processing, Biometry, and Epidemiology, Ludwig-Maximilians University Munich, Munich, Bavaria, Germany

2. Institute of Health Economics and Health Care Management, Helmholtz Zentrum München, Neuherberg, Germany

3. Institute of General Practice and Health Services Research, University Hospital rechts der Isar, Technical University of Munich, Munich, Germany

4. Munich Center of Health Sciences, Ludwig-Maximilians University Munich, Munich, Bavaria, Germany

5. Competence Center for Nutrition and the Institute of the Bavarian State Ministry of Food, Agriculture and Forestry, Freising, Bavaria, Germany

Abstract

Abstract Context In recent decades, obesity and type 2 diabetes mellitus (T2DM) have both become global epidemics associated with substantial healthcare needs and costs. Objective The aim of this review was to critically assess nutritional interventions for their impact on healthcare costs to community-dwelling individuals regarding T2DM or obesity or both, specifically using CHEERS (Consolidated Health Economic Evaluation Reporting Standards) criteria to assess the economic components of the evidence. Data Sources Searches were executed in Embase, EconLit, AgEcon, PubMed, and Web of Science databases. Study Selection Studies were included if they had a nutritional perspective, reported an economic evaluation that included healthcare costs, and focused on obesity or T2DM or both. Studies were excluded if they examined clinical nutritional preparations, dietary supplements, industrially modified dietary components, micronutrient deficiencies, or undernutrition; if they did not report the isolated impact of nutrition in complex or lifestyle interventions; or if they were conducted in animals or attempted to transfer findings from animals to humans. Data Extraction A systematic review was performed according to PRISMA guidelines. Using predefined search terms, 21 studies evaluating food habit interventions or taxation of unhealthy foods and beverages were extracted and evaluated using CHEERS criteria. Results Overall, these studies showed that nutrition interventions and taxation approaches could lead to cost savings and improved health outcomes when compared with current practice. All of the included studies used external sources and economic modeling or risk estimations with population-attributable risks to calculate economic outcomes. Conclusions Most evidence supported taxation approaches. The effect of nutritional interventions has not been adequately assessed. Controlled studies to directly measure economic impacts are warranted.

Funder

Dietary Habits and Associated Healthcare costs

Bavarian State Ministry of Food, Agriculture and Forestry

Publisher

Oxford University Press (OUP)

Subject

Nutrition and Dietetics,Medicine (miscellaneous)

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