Glucose sensor reveals your personal 'Blood sugar danger Zone' – and a simple fix

NCT ID NCT07618663

Disease control Sponsor: Shifa International Hospital Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jul 29, 2026 · Updated 4 times

Summary

This study investigates whether continuous glucose monitor (CGM) data can pinpoint the time of day when a person with prediabetes experiences the largest blood sugar spikes after eating. Participants wear a CGM and activity tracker for 10 days to identify their personal 'vulnerability window.' They are then randomly assigned to either shift their largest meal away from that window and take a short walk after it, or to receive general health advice. The goal is to see if this personalized timing reduces post-meal glucose exposure over 4 weeks.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance: Phenotype-guided meal timing and postprandial walking
What this could lead to: If successful, this approach could offer a simple, personalized lifestyle strategy to help people with prediabetes better manage their blood sugar without medication.
What could go wrong: This is a small, early-stage trial with only 105 participants and a short 4-week follow-up. Results may not apply to everyone, and adherence to the personalized schedule could be challenging.

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

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

105 people

The number who actually took part.

Started

Jun 2026

Finished

Jul 2026

Lead sponsor

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

30 to 70 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show 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: * Age 30 to 70 years * Prediabetes, defined as either: * HbA1c 5.7% to 6.4% within 3 months of screening, or * Fasting plasma glucose 100 to 125 mg/dL on two separate occasions * Body mass index 23 to 40 kg/m² * Owns a smartphone compatible with study applications * Willing to wear a continuous glucose monitor and wrist activity monitor during the study period * Willing to record meals using timestamped meal-photo logging * Able to provide written informed consent Exclusion Criteria: * Current or prior diagnosis of type 1 diabetes or type 2 diabetes * Use of glucose-lowering medication within the past 3 months * Use of systemic corticosteroid medication within the past 3 months * Use of prescription weight-loss medication within the past 3 months * Current shift work * Transmeridian travel across more than 2 time zones within 4 weeks before enrollment * Known untreated or unstable sleep disorder, including obstructive sleep apnea, narcolepsy, or insomnia disorder * Pregnancy, planned pregnancy, or breastfeeding * Gastrointestinal disease or surgery likely to affect nutrient absorption * Current participation in a structured dietary or exercise intervention program * Estimated glomerular filtration rate less than 60 mL/min/1.73 m² * Inability or unwillingness to comply with continuous glucose monitoring, wrist actigraphy, meal logging, or study visits

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Conditions

The condition(s) this trial relates to.

diabetes mellitus glucose intolerance Insulin Resistance prediabetes syndrome

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Prediabetes Prediabetes (insulin resistance, impaired glucose tolerance) Prediabetes or diabetes

Glucose sensor reveals your personal 'Blood sugar danger Zone' – and a simple fix

What the study statuses mean