Why do some seniors stop eating? scientists investigate
NCT ID NCT07636369
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at why some older adults lose their appetite while others keep a healthy one. Researchers will measure how taste, digestion, and hormones differ between the two groups. Twenty women aged 65-74 will take part. No treatment is given; the goal is simply to learn more about the causes of appetite decline in aging.
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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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About 20 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Jun 2026
An estimate. Start dates often move.
- Expected to finish
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Oct 2026
An estimate. End dates often move.
- Lead sponsor
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A government agency
The lead sponsor is a government body.
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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65 to 74 years
- Sex
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Female participants only
- 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: * Postmenopausal female * Aged 65-74 years * Habitual breakfast consumer (consumes breakfast between 7am to 10am) * Willingness to consume meals and follow intervention protocol * English speaking Exclusion Criteria: * BMI ≥ 27.5 * Diagnosed with medical condition that may influence appetite or microbiome (e.g. diabetes, thyroid disorders, gastrointestinal diseases) * Currently taking any medications or supplements that may influence appetite or the microbiome (e.g. probiotics, antibiotics, appetite stimulants/suppressants) one month prior to their first visit in consultation with study physician, PI and study team * Following a special diet for weight management (e.g. low-calorie, low carbohydrate) * History of bariatrics surgery * Intentional attempt to change body weight or composition * History of severe vasovagal syncope (blackouts or near faints) following blood draw * Drug abuse within last 5 years * Excessive alcoholic beverage consumption \> 2 servings per day (1 serving defined as 360 mL beer, 150 mL wine or 45 mL distilled spirits) * Smoking (cigarette, e-cigarette, cigar, pipe, vape) * Engaging in habitual vigorous physical activity (as defined by physical activity questionnaire-PAQ) * Loose teeth or jaw pain * Not missing \> 2 non-wisdom molars * Involvement in other clinical studies that may influence the outcome of the study * A study team member or their immediate family member
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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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Clinical Nutrition Research Centre
Singapore, Singapore
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