The Diabetes Prevention Program (DPP) is a year-long, CDC-recognized lifestyle change program that helps people with prediabetes prevent or delay type 2 diabetes. The original 2002 trial cut new diabetes diagnoses by 58% — and 71% in adults over 60 — through modest weight loss and 150 minutes of weekly exercise. Today, the program is delivered nationwide and covered by Medicare and most insurers.
The Original DPP Trial: 58% Risk Reduction
The Diabetes Prevention Program was a landmark NIH-funded randomized trial published in the New England Journal of Medicine in 2002. It enrolled 3,234 adults with prediabetes and randomized them to one of three groups:
- Intensive lifestyle intervention: 5-7% weight loss goal, 150 minutes/week exercise, 16-session curriculum
- Metformin 850 mg twice daily
- Placebo
| Group | 3-Year Diabetes Incidence | Risk Reduction vs. Placebo |
|---|---|---|
| Placebo | 28.9% | — |
| Metformin | 21.7% | 31% |
| Lifestyle | 14.4% | 58% |
Adults aged 60+ saw a 71% reduction with lifestyle change. Long-term follow-up (DPP Outcomes Study, DPPOS) showed benefits persisted more than 15 years later — diabetes incidence remained 27% lower in the lifestyle group.
What the National DPP Looks Like Today
The CDC translated the trial into the National Diabetes Prevention Program — a real-world version delivered by hospitals, YMCAs, community health centers, employers, and digital health companies. To use the “CDC-recognized” label, programs must follow the approved curriculum and report participant outcomes to the CDC.
Program Structure
- Length: 12 months total
- Sessions: 16 weekly core sessions, then 6 monthly maintenance sessions (22 total)
- Format: In-person group, virtual group, or fully digital/asynchronous
- Coach: Trained lifestyle coach, often a CDCES, RDN, or nurse
- Group size: Typically 8-15 participants
Two Core Goals
| Goal | Target |
|---|---|
| Weight loss | 5-7% of starting body weight (10-14 lbs for a 200-lb adult) |
| Physical activity | At least 150 minutes per week of moderate activity (e.g., brisk walking) |
What You Learn in the Program
The curriculum balances nutrition, exercise, and behavior change skills. Typical topics include:
- Tracking calories and grams of fat
- Reading nutrition labels and portion sizes
- Eating out without overeating
- Building consistent activity into your week
- Managing stress, sleep, and emotional eating
- Problem-solving plateaus and slip-ups
- Long-term motivation and relapse prevention
Sessions emphasize self-monitoring — most participants log food intake, activity minutes, and weight every week. For nutrition fundamentals to apply alongside the program, see our prediabetes diet guide and exercise for prediabetes.
Eligibility
You qualify for a CDC-recognized DPP if you are at least 18 years old, have a BMI of 25 or higher (23 or higher if Asian American), have no prior diagnosis of type 1 or type 2 diabetes, are not pregnant, AND meet one of the following:
- Blood test showing A1C 5.7-6.4%
- Fasting plasma glucose 100-125 mg/dL
- 2-hour 75g oral glucose tolerance test 140-199 mg/dL
- Previous gestational diabetes
- Positive screening on the CDC Prediabetes Risk Test (community programs only)
Cost and Insurance Coverage
| Coverage | Detail |
|---|---|
| Medicare Part B (MDPP) | $0 cost-sharing for eligible beneficiaries; lifetime benefit (cannot repeat) |
| Commercial insurance | Most major insurers cover; check formulary or call member services |
| Medicaid | Coverage in 30+ states and growing |
| Self-pay (YMCA) | Sliding scale, often $200-$429 for full year |
| Employer wellness | Many large employers offer free access via Omada, Lark, Noom Health, etc. |
How to Enroll
- Confirm prediabetes with your primary care provider via lab testing.
- Search the CDC’s registry at CDC National DPP locator for in-person and virtual programs in your zip code.
- Verify insurance coverage — call the member services number on your card and ask specifically about the “National DPP” or “Medicare DPP.”
- Choose your format — in-person group, live virtual group, or digital/asynchronous app-based.
- Commit to the full year. Programs that complete all 22 sessions show the strongest outcomes.
Virtual and Digital DPP Options
- Omada Health — app-based with personal coach, smart scale included
- Lark Health — AI-driven coaching via text and app
- Noom Health (CDC-recognized track) — psychology-based behavior change
- YMCA Diabetes Prevention Program — in-person and virtual options
- Solera Health — matchmaker that routes you to a CDC-recognized program based on your insurance and preferences
What the Numbers Mean for You
If your starting A1C is 6.0% and BMI is 30, completing the DPP and losing 5-7% body weight has been shown to:
- Reduce your 3-year diabetes risk by roughly half
- Lower A1C by about 0.3-0.5 percentage points on average
- Lower fasting glucose by 7-10 mg/dL
- Improve blood pressure and cholesterol
According to the CDC, more than 1 in 3 American adults — about 96 million people — have prediabetes, but only 19% know it. The DPP is the single most evidence-backed intervention for this group.
The Bottom Line
The Diabetes Prevention Program is the gold-standard lifestyle intervention for prediabetes. One year, 22 sessions, 5-7% weight loss, 150 minutes per week of activity — and a 58% lower chance of developing type 2 diabetes. Medicare and most insurers cover it at no cost. If you have prediabetes, enrolling in a CDC-recognized DPP is the highest-yield action you can take.
