Cited by 371Physical Activity and HealthDiabetes, Cardiovascular Risks, and LipoproteinsDiabetes Management and Education

Combined diet and physical activity promotion programs to prevent type 2 diabetes among persons at increased risk: A systematic review for the Community Preventive Services Task Force

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Balk, Ethan M., Earley, Amy, Raman, Gowri, Avendano, Esther A., Pittas, Anastassios G., Remington, Patrick L.·2015·Annals of Internal Medicine

Abstract

BACKGROUND: Trials have shown efficacy of rigorous diet and physical activity promotion programs to reduce diabetes incidence and improve glycemic measures in adults at increased risk for type 2 diabetes. PURPOSE: To evaluate diet and physical activity promotion programs for persons at increased risk for type 2 diabetes, primarily to reduce diabetes risk and decrease body weight and glycemia. DATA SOURCES: MEDLINE, the Cochrane Central Register of Controlled Trials, CAB Abstracts, Global Health, and Ovid HealthSTAR from 1991 through 27 February 2015, with no language restriction. STUDY SELECTION: 8 researchers screened articles for single-group or comparative studies of combined diet and physical activity promotion programs with at least 2 sessions over at least 3 months in participants at increased risk for type 2 diabetes. DATA EXTRACTION: 7 researchers extracted data on study design; participant, intervention, and outcome descriptions; and results and assessed study quality. DATA SYNTHESIS: 53 studies (30 of diet and physical activity promotion programs vs. usual care, 13 of more intensive vs. less intensive programs, and 13 of single programs) evaluated 66 programs. Compared with usual care, diet and physical activity promotion programs reduced type 2 diabetes incidence (risk ratio [RR], 0.59 [95% CI, 0.52 to 0.66]) (16 studies), decreased body weight (net change, -2.2% [CI, -2.9% to -1.4%]) (24 studies) and fasting blood glucose level (net change, -0.12 mmol/L [-2.2 mg/dL] [CI, -0.20 to -0.05 mmol/L {-3.6 to -0.9 mg/dL}]) (17 studies), and improved other cardiometabolic risk factors. Evidence for clinical events was limited. More intensive programs were more effective. LIMITATIONS: Wide variation in diet and physical activity promotion programs limited identification of features most relevant to effectiveness. Evidence on clinical outcomes and in children was sparse. CONCLUSION: Combined diet and physical activity promotion programs are effective at decreasing diabetes incidence and improving cardiometabolic risk factors in persons at increased risk. More intensive programs are more effective. PRIMARY FUNDING SOURCE: Centers for Disease Control and Prevention Community Preventive Services Task Force.

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  • Diet and physical activity promotion versus usual care reduced the risk of incident diabetes mellitus (RR 0.59; 95% CI 0.52 to 0.66) while also improving other cardiometabolic risk factors.

    “Another systematic review that included 16 studies reported that diet and PA promotion (vs. usual care) reduced the risk of incident DM (RR: 0.59; 95% CI, 0.52 to 0.66) while also improving other cardiometabolic risk factors [96] .”

    From Physical activity, cardiorespiratory fitness, and cardiovascular health: A clinical practice statement of the American Society for Preventive Cardiology Part II: Physical activity, cardiorespiratory fitness, minimum and goal intensities for exercise training, prescriptive methods, and special patient populations (2022) · cites this paper as [96]

    The Results, ‘Incident Diabetes,’ report 16 studies comparing diet and physical activity programs with usual care and a summary RR of 0.59; the Abstract, ‘Data Synthesis,’ also reports improvements in cardiometabolic risk factors. However, both passages give the 95% CI as 0.51 to 0.66, not the claimed 0.52 to 0.66. (LLM, conf=0.95)

    Experimental — accuracy not yet measured
  • The Diabetes Prevention Program (DPP) lifestyle intervention reduces the risk of diabetes in individuals with prediabetes, demonstrating 58% risk reduction over 3 years.

    “The Diabetes Prevention Program (DPP) lifestyle intervention is the criterion standard for reducing the risk of diabetes in individuals with prediabetes, demonstrating 58% risk reduction over 3 years.5,6”

    From An AI-Powered Lifestyle Intervention vs Human Coaching in the Diabetes Prevention Program: A Randomized Clinical Trial (2025) · cites this paper as [6]

    The Results (Incident Diabetes; page unavailable) identify the DPP among studies finding reduced diabetes incidence and report significant DPP effects across age groups. The review reports a pooled risk ratio of 0.59 across programs, but does not give a DPP-specific 58% reduction over three years or call the DPP the criterion standard. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • More intensive intervention programs are the most effective in decreasing diabetes incidence and improving CVD risk factors.

    “More intensive intervention programs are the most effective in decreasing diabetes incidence and improving cardiovascular disease (CVD) risk factors (35).”
  • Modest, sustained weight loss can delay the progression from prediabetes to type 2 diabetes.

    “There is strong and consistent evidence that modest, sustained weight loss can delay the progression from prediabetes to type 2 diabetes (97-99) (see Section 3, “Prevention or Delay of Type 2 Diabetes and Associated Comorbidities”) and is beneficial for the management of type 2 diabetes (see Section 8, “Obesity and Weight Management for the Prevention and Treatment of Type 2 Diabetes”).”
  • Modest, sustained weight loss is beneficial for the management of type 2 diabetes.

    “There is strong and consistent evidence that modest, sustained weight loss can delay the progression from prediabetes to type 2 diabetes (97-99) (see Section 3, “Prevention or Delay of Type 2 Diabetes and Associated Comorbidities”) and is beneficial for the management of type 2 diabetes (see Section 8, “Obesity and Weight Management for the Prevention and Treatment of Type 2 Diabetes”).”

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Authors
Balk, E. M., Earley, A., Raman, G., Avendano, E. A., Pittas, A. G., & Remington, P. L.
Affiliations
  • Tufts Medical Center (US)
  • From Brown University School of Public Health, Providence, Rhode Island; Tufts Medical Center and Mapi Group, Boston, Massachusetts; and University of Wisconsin, Madison, Wisconsin.
Venue
Annals of Internal Medicine
Published
2015-09-15
Volume
163
Issue
6
Pages
437-451
ISSN
  • 0003-4819 (ISSN-L)
  • 1539-3704
OpenAlex
W1938758241
Cited by
371
References
123
Citations by year
2026: 14 · 2025: 20 · 2024: 39 · 2023: 18 · 2022: 33 · 2021: 32 · 2020: 38 · 2019: 32 · 2018: 52 · 2017: 38 · 2016: 37 · 2015: 15
FWCI
5.78
Type
journal article
Language
en
Open access
Locations
  • Annals of Internal Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (CC999999)
  • National Institute of Diabetes and Digestive and Kidney Diseases (U01DK098245)
Topics
  • Health Sciences › Medicine › Physiology › Physical Activity and Health
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Education
Keywords
type 2 diabetes prevention, physical activity promotion programs, diabetes risk, weight loss, fasting blood glucose, cardiometabolic risk factors, diabetes incidence, program intensity, community-based intervention
MeSH terms
Blood Glucose, Blood Pressure, Diabetes Mellitus, Type 2, Diet, Reducing, Health Promotion, Humans, Lipids, Risk Factors, Weight Loss, Exercise

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