Could a 10-Hour eating window curb appetite and improve blood sugar?
NCT ID NCT07805291
First seen Sep 04, 2026 · Last updated Sep 04, 2026
Summary
Researchers at the University of Aberdeen are testing whether eating all meals within a 10-hour window, while fasting for the other 14 hours, can improve appetite control in adults with overweight or obesity. The study also compares different meal frequencies within that window, using a high-protein diet. Participants will follow two eating patterns in a crossover design, and researchers will measure appetite, blood glucose, and insulin responses on test days. The goal is to see if this eating schedule can help people feel fuller and manage their weight more effectively.
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 (10-hour eating window) combined with a high-protein diet and varying meal frequency
- What this could lead to
- If it works, this could point toward a practical eating pattern that helps people with overweight or obesity feel fuller and manage their appetite more easily.
- What could go wrong
- This is a small, early crossover study with only 12 participants, so results may not apply broadly. The effects on appetite and blood sugar may be modest or short-lived.
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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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12 people
The number who actually took part.
- Started
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Sep 2024
- Finished
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Aug 2025
- 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 65 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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: * Adults (males and females), age 18-65 years * Who are healthy but overweight or obese (BMI 25+ Kg/m2) * With no history of kidney disease or bariatric surgery * Not following any specific type of medical or religious diet * Not taking any drugs that affect the rate of physical activity or metabolic circulating * Not pregnant or breastfeeding. * With a fluent understanding of the English language Exclusion Criteria: * Anyone with a BMI (in kg/m2) under 25 * Anyone under 18 years or above 65 years. * Anyone taking the statins (current), aspirin or anti-coagulants (current). * Anyone with chronic inflammatory disorders such as rheumatoid arthritis or inflammatory bowel disease * Anyone with cardiovascular disease * Anyone with diabetes * Anyone who is are planning to be pregnant, are pregnant or breastfeeding * Anyone with food allergy, self-reported food sensitivity or intolerance * Anyone with coeliac disease or gluten intolerance * Anyone with a gastrointestinal disorder, kidney disease, liver disease or gout * Anyone taking medication which may affect appetite or circadian rhythm. * Anyone with an eating disorder * Anyone suffering from unregulated thyroid disease. * Anyone using Beta Blockers which can affect the rate of physical activity. * Anyone using some anti-depressants such as mirtazapine can affect the appetite. * Anyone following a vegetarian or vegan diet * Anyone following a weight loss programme (that may affect lifestyle, physical activity \& diet) * Anyone with unsuitable veins for blood sampling * Anyone who is unable to fluently speak, read and understand English * Anyone who is unable to comply with an alcohol-free diet for 3 weeks * Anyone consumption of nutrition supplements * Anyone has the intention to donate blood within 2 months of the study. * Anyone intending to travel away from Aberdeen during the intervention phase. * Anyone who is a shift worker. * Anyone who smokes including e-cigs or vaping. * Anyone recently participated in any other research studies during the last 4 weeks.
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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.
Contacts and locations
Locations
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University of Aberdeen, The Rowett Institute, Foresterhill
Aberdeen, Aberdeen City, AB25 2ZD, United Kingdom
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