16-Hour daily fast tested as diabetes therapy
NCT ID NCT07272460
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether time-restricted eating—fasting for 18 hours and eating only during a 6-hour window each day—can help preserve the pancreas's ability to produce insulin and improve blood sugar control in people with type 2 diabetes. Over 52 weeks, 112 overweight adults will either follow this eating schedule or standard lifestyle advice. The goal is to see if this simple dietary change can slow diabetes progression.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- time-restricted eating (behavioral intervention)
- What this could lead to
- If it works, this could point toward a simple, drug-free way to help preserve insulin production and improve blood sugar control in early type 2 diabetes.
- What could go wrong
- This is a mid-sized trial (112 people) testing a behavioral change, which can be hard to stick with long-term. Results may not apply to everyone, and the benefit might be modest.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 112 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2026
- Expected to finish
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Jul 2029
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 75 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Individuals with previously diagnosed BMI ≥ 25 kg/m2 and type 2 diabetes within preceding 10 years. * Age 18 - 75 years inclusive * Stable weight over past 12 weeks (less than 5% change in body weight) (self-reported) * Diabetes treatment consisting of lifestyle only or metformin, dipeptidyl peptidase-4 (DPP-4) inhibitor, and sodium-glucose co-transporter 2 (SGLT2) inhibitors either as monotherapy or in combination. * Ability to read and understand English Exclusion Criteria: * Current diabetes treatment with insulin, glucagon-like peptide-1 receptor agonists, and/or sulfonylureas. * Use of any other pharmacological treatment for weight-loss * Previous surgical treatment for weight loss such as gastric bypass or gastric band * Any history of eating disorder * Currently pregnant or lactating * Renal dysfunction as evidenced by estimated glomerular filtration rate \< 25 ml/min by CKD-EPI Creatinine Equation * New York Heart Association class II-IV heart failure * Hepatic disease considered to be clinically significant (includes jaundice, chronic hepatitis, or previous liver transplant) or transaminases \>2.5X the upper limit of normal * Malignant neoplasm requiring chemotherapy, surgery, radiation or palliative therapy within the previous 5 years (with the exception of basal cell skin cancer) * Any other factor likely to limit adherence to the study, in the opinion of the investigators * Concurrent participation in another research study relevant to diabetes and metabolic health
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Leadership Sinai Centre for Diabetes
RECRUITINGToronto, Ontario, M5T3L9, Canada
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