Watermelon juice: the next superfood for appetite control?
NCT ID NCT04096586
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
Researchers at San Diego State University are studying whether drinking watermelon juice can make people feel fuller, change blood sugar and insulin levels, and improve gut health. The study involves 80 healthy children and adults who will drink either watermelon juice or a red-colored juice for comparison. This is an early-stage study to gather information, not to test a treatment for any disease.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- watermelon juice
- What this could lead to
- If it works, this could point toward a natural way to help manage appetite and weight.
- What could go wrong
- This is a small, early-stage study with no disease focus. Results may not lead to any practical advice or product.
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 80 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Aug 2019
- Expected to finish
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Dec 2028
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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10 to 55 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: * Generally healthy subjects Exclusion Criteria: * Smoker * Pregnant woman * Required dietary supplement use * Required medication of metabolic disorders * Allergy to watermelon
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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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School of Exercise and Nutritional Sciences, SDSU
RECRUITINGSan Diego, California, 92182-7251, United States
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