Sweeteners under the microscope: do they spike blood sugar?
NCT ID NCT07506577
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at whether two common artificial sweeteners—saccharin and acesulfame-potassium—affect blood sugar levels in middle-aged and older adults with prediabetes. Fourteen participants ate controlled breakfasts with or without these sweeteners, and their blood glucose was monitored for two hours. The goal was to understand if these sweeteners impact glucose tolerance in people at risk for type 2 diabetes.
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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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14 people
The number who actually took part.
- Started
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Jul 2022
- Finished
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May 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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40 years and older
- 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.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Age 40+ years * Prediabetic * Weight stable for previous 6 months * BMI \<40 kg/m2 * Sedentary to recreationally active * No plans to gain/lose weight or change physical activity level * Consume less than one serving of non-sugar sweeteners per week Exclusion Criteria: * Diabetes or any diabetes medications * Antibiotic, prebiotic or prebiotic use in prior 3 months * Blood pressure (BP) \> 159/99 mmHg * Change in type or dose of these prescription medications over the past 6 months: antihypertensive medications, Statins, hormone replacement therapy (estrogen or testosterone) or oral contraceptives, thyroid medications * Diagnosed inflammatory bowel disease * Past or current heart diseases, stroke, respiratory disease, endocrine or metabolic disease, or hematological-oncological disease * Vegetarian or vegan * Pregnant or plans to become pregnant * Breastfeeding * Food allergies or aversions, Phenylketonuria (PKU)
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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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Virginia Tech
Blacksburg, Virginia, 24061, United States
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