If an obese person with type 2 diabetes eats only 600–850 calories a day for a few months, about half of them will no longer have diabetes after a year—and about a third will still be diabetes-free two years later, especially if they lost a lot of weight early on and haven’t had diabetes for very long.
Evidence Quality Assessment
Claim Status
appropriately stated
Study Design Support
Design supports claim
Appropriate Language Strength
probability
Can suggest probability/likelihood
Assessment Explanation
The claim uses precise percentages (46%, 36%) and qualifiers ('particularly in those with...') that reflect data from clinical trials like the DiRECT study. These figures are derived from controlled interventions with defined outcomes, making the probabilistic language appropriate. The claim does not overstate causality (e.g., 'cures' or 'always') and acknowledges variability based on baseline factors, which is scientifically sound. The verb 'induces' is acceptable in context because the intervention is directly applied and outcomes are measured prospectively, though 'is associated with' would be more conservative.
More Accurate Statement
“A very low-calorie diet (600–850 kcal/day) for 3–5 months is associated with remission of type 2 diabetes in approximately 46% of obese adults within one year, with 36% maintaining remission at two years, particularly among those with shorter diabetes duration and greater baseline weight loss.”
Context Details
Domain
medicine
Population
human
Subject
Obese adults with type 2 diabetes
Action
induces
Target
remission of type 2 diabetes within one year, with 36% maintaining remission at two years
Intervention Details
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.
Evidence from Studies
Supporting (0)
Contradicting (1)
Reversing Type 2 Diabetes: A Narrative Review of the Evidence
The study talks generally about low-calorie diets helping reverse diabetes, but doesn’t give the exact numbers or details from the claim, so we can’t say it proves the claim is true.