Randomised controlled trialindependent cross-checkabstract checked★ key study I-DIAB-102 in-depth review
How often lifestyle change puts type 2 diabetes into remission (Look AHEAD)
Association of an intensive lifestyle intervention with remission of type 2 diabetes.
Overview
Gregg EW et al.. JAMA 2012 · PMID 23288372 · DOI 10.1001/jama.2012.67929
About 1 in 9 people reached remission in the first year with an intensive lifestyle programme, but only 3.5% stayed in remission for 4 years.
Does the study support the specific claim? Partly · Methodological quality: high
Plain-language summary
Study explained simply
- What did the researchers want to find out?
Measure remission in a lifestyle trial.
- How was the study done?
Analysis of a large RCT.
- How many people, animals or samples were studied?
4,503 adults.
- What was actually found?
11.5% vs 2.0% (year 1); 3.5% sustained 4 years.
- How large was the observed effect?
NNT about 10 (year 1).
- What do the results mean in everyday life?
Lifestyle helps, but lasting remission is uncommon.
- What are the study's limitations?
Exploratory analysis.
- What does it say about Elawady's specific claim?
Contradicts 'cure' as a typical outcome.
- Do the results apply to Germany and Europe?
Applicable.
- What can explicitly not be concluded from this study?
Cannot apply to T1D.
Scientific in-depth review
1. Full reference
- Authors
- Gregg EW et al.
- Journal
- JAMA
- Year
- 2012
- Identifier
- PMID 23288372 DOI 10.1001/jama.2012.67929
- Verification
- verified – PubMed efetch 2026-10-26; Crossref 2026-10-26
- Retracted
- no
- Corrections
- none
- Extent checked
- abstract only
- Conflicts of interest and funding
NIH (record).
2. Research question
How often does an intensive lifestyle intervention produce remission of T2D?
3. Study design and population
- Study design
- Randomised controlled trial – Ancillary observational analysis of the Look AHEAD RCT
- Population
Overweight/obese adults with T2D
- Country
USA
- Period
2001-2008
- Sample size
4,503 (ILI 2241; DSE 2262)
- Inclusion and exclusion criteria
BMI >=25, T2D
4. Methods and endpoints
- Exposure / intervention
Intensive lifestyle intervention
- Comparator
Diabetes support and education
- Endpoints
Partial or complete remission
- Statistical methods
Prevalence with 95% CIs
5. Actual results
- Results
Any remission 11.5% (10.1-12.8%) year 1 and 7.3% (6.2-8.4%) year 4 vs 2.0% control; continuous remission for 4 years 3.5% vs 0.5%. Weight difference -7.9% at year 1.
- Absolute risks
Year 1 difference 9.5 points (NNT about 10.5); year 4 5.3 points (stats/C-DIAB-03_remission.py)
- Authors' conclusion
Intensive lifestyle intervention was associated with greater likelihood of partial remission, but absolute rates were modest.
6. Strengths
- Very large
- Randomised comparison
- 4-year data
7. Weaknesses
- Exploratory ancillary analysis
- Longer diabetes duration than DiRECT
8. Risk of bias
- Orienting tool
- RoB 2
- Type of assessment
- simplified assessment (abstract only)
- Full formal assessment
- no
- Overall risk of bias
- some concerns
- Rationale
Secondary analysis.
9. Assessment of the statistical interpretation
Precise; modest absolute effect.
10. Relevance to the specific claim
Under a conventional lifestyle programme, remission is uncommon (about 1 in 9 in year 1, 1 in 30 sustained 4 years), showing that 'cure' through diet is not typical.
11. Independent contrary findings
12. Transferability to Germany and Europe
Directly applicable; same biology and clinical standards in Europe.
13. Overall methodological judgement
Calibrates expectations: remission possible but uncommon without intensive weight loss.
| Multidimensional assessment | |
|---|---|
| Authenticity of the source | verified |
| Methodological quality | high |
| Risk of bias | some concerns |
| Precision of results | high |
| Directness | direct |
| Reproducibility | replicated |
| Consistency with the overall evidence | consistent |
| Regional transferability | high |
| Adequacy of the interpretation (by the archive) | not applicable |
14. Open questions
15. Linked fact checks
- Diabetes can be cured by following the Tayebat system without medication, illustrated by a patient who stopped insulin after 30 years of insulin use. – Studies with mixed or unclear results