SatietyNCT04096586
Effects of Watermelon Consumption on Satiety and Digestive Health
A study testing Red juice and Watermelon juice in people with Satiety, run by San Diego State University at 1 site in United States.
Trial summary
The objective of the proposed research is to determine the effects of watermelon (fruit and rind blenderized) on satiety, metabolic markers, bowel habits, microbiome and weight management in children and adults Read more about this study
- Who is it for?
- Ages 10 to 55 yearsHealthy volunteers can take part
- Conditions the study is for
- Satiety
- What is being tested?
- Red juice and Watermelon juice
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 80 participants
- Where
- 1 siteUnited States
- Study dates
- 1 Aug 2019to 31 Dec 2028
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 10 to 55 years
- All sexes
- Healthy volunteers accepted
- Child, Adult
Who may be able to join
- Generally healthy subjects
Who cannot join
- Smoker
- Pregnant woman
- Required dietary supplement use
- Required medication of metabolic disorders
- Allergy to watermelon
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
United States1 site, 1 recruiting
- Recruiting
School of Exercise and Nutritional Sciences, SDSU
San Diego, California, 92182-7251
Mee Young Hong, 619-594-2392, mhong2@mail.sdsu.edu
About this study
The objective of the proposed research is to determine the effects of watermelon (fruit and rind blenderized) on satiety, metabolic markers, bowel habits, microbiome and weight management in children and adults
- Conditions
- Satiety
- Being tested
- Red juice, Watermelon juice
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Red juiceOther
To determine the effects of red juice on satiety and gut health
Watermelon juiceOther
To determine the effects of watermelon juice on satiety and gut health
| Study group | Role | What they receive |
|---|---|---|
| Red juice | Active comparator | Subjects consume 8 fl oz of red juice daily for 8 weeks Receives: Other: Red juice |
| Watermelon juice | Experimental | Subjects consume 8 fl oz of watermelon juice daily for 8 weeks Receives: Other: Watermelon juice |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change of satiety
Change of hunger feeling (appetite) will be examined using visual analog scale (0-10), 0 least and 10 greatest
Measured: 0 and 20, 40, 60, 90 and 120 minutes post juice consumption
Change of glucose level
Change of blood glucose level will be determined to examine effects of watermelon juice consumption vs red juice
Measured: 0 and 20, 40, 60, 90 and 120 minutes post juice consumption
Change of insulin level
Change of blood insulin level will be determined to examine effects of watermelon juice consumption vs red juice
Measured: 0 and 20, 40, 60, 90 and 120 minutes post juice consumption
Change of triglyceride level
Change of triglyceride level with watermelon juice consumption vs red juice consumption
Measured: Baseline and week 8
Secondary outcomes (1)
Change of alpha diversity in microbiome
Change of alpha diversity in micriobiome with watermelon juice consumption vs red juice consumption
Measured: Baseline and week 8
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted20 Sep 2019
- Study start1 Aug 2019
- Primary completion31 Dec 2028 (estimated)
- Study completion31 Dec 2028 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for SatietyStudies of the same condition, open and under way.
- More trials run by San Diego State UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Enrolment
- 80 participants (estimated)
Sponsor and investigators
- Lead sponsor
- San Diego State University
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04096586
- Sponsor's protocol ID
- HS-2019-0103
- Status last verified
- Jan 2026
- First submitted
- 18 Sep 2019
- Last updated
- 21 Jan 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 21 Jan 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effects of Watermelon Consumption on Satiety and Digestive Health
- ClinicalTrials.gov ID
- NCT04096586
- Acronym / sponsor ID
- HS-2019-0103
- Conditions
- Satiety
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 80 participants (estimated)
- Lead sponsor
- San Diego State UniversityUniversity, hospital or other
- Study start
- 1 Aug 2019 (actual)
- Primary completion
- 31 Dec 2028 (estimated)
- Study completion
- 31 Dec 2028 (estimated)
- First posted
- 20 Sep 2019 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The objective of the proposed research is to determine the effects of watermelon (fruit and rind blenderized) on satiety, metabolic markers, bowel habits, microbiome and weight management in children and adults
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Red juice | Active comparator | Other: Red juiceSubjects consume 8 fl oz of red juice daily for 8 weeks |
| Watermelon juice | Experimental | Other: Watermelon juiceSubjects consume 8 fl oz of watermelon juice daily for 8 weeks |
Who may qualify
- Ages
- 10 to 55 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult
Key inclusion criteria (1 listed)
- Generally healthy subjects
Key exclusion criteria (5 listed)
- Smoker
- Pregnant woman
- Required dietary supplement use
- Required medication of metabolic disorders
- Allergy to watermelon
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Red juiceTo determine the effects of red juice on satiety and gut health | Other | Red juice |
| Watermelon juiceTo determine the effects of watermelon juice on satiety and gut health | Other | Watermelon juice |
Primary outcome
Change of satiety
Time frame: 0 and 20, 40, 60, 90 and 120 minutes post juice consumption
Change of hunger feeling (appetite) will be examined using visual analog scale (0-10), 0 least and 10 greatest
Change of glucose level
Time frame: 0 and 20, 40, 60, 90 and 120 minutes post juice consumption
Change of blood glucose level will be determined to examine effects of watermelon juice consumption vs red juice
Change of insulin level
Time frame: 0 and 20, 40, 60, 90 and 120 minutes post juice consumption
Change of blood insulin level will be determined to examine effects of watermelon juice consumption vs red juice
Change of triglyceride level
Time frame: Baseline and week 8
Change of triglyceride level with watermelon juice consumption vs red juice consumption
1 secondary outcome
Change of alpha diversity in microbiome
Time frame: Baseline and week 8
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 21 Jan 2026.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
School of Exercise and Nutritional Sciences, SDSU
San Diego, United States
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Red juice and Watermelon juice in people with Satiety, run by San Diego State University at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 21 Jan 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Each site lists its own contact: choose the nearest one under Trial locations. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Change of satiety (time frame: 0 and 20, 40, 60, 90 and 120 minutes post juice consumption). The study lists 4 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 21 Jan 2026.