JForH Glucose Report 2026: what 726,000 CGM readings show
Reviewed by the JForH team ·
Across 37 Journey for Health users who wore a CGM for at least a week, the median person spent 88% of the day between 70 and 180 mg/dL, glucose peaked around 6–7 am and again around 6 pm, and a typical rise was about 63 mg/dL, reaching its peak after about an hour.
What this report is
These are group figures from people who wore a continuous glucose monitor (CGM) with Journey for Health between 2026-06-28 and 2026-10-30. We looked at 37 people who had at least seven days of sensor data: 726,271 readings across 582 sensor-days. No individual's data is shown. Every number below describes a group of at least 20 people.
Most people in this group joined to manage or prevent type 2 diabetes, but we do not have a confirmed diagnosis for everyone, and the group is small and self-selected. Treat these figures as a description of our users, not of everyone with diabetes.
How much of the day were people in range?
The international CGM targets for most adults with diabetes are more than 70% of the day between 70 and 180 mg/dL, less than 4% below 70, and less than 25% above 180.
| Measure | Median person | Middle half of people | Usual target |
|---|---|---|---|
| Time in range (70–180 mg/dL) | 88% | 55%–97% | more than 70% |
| Time above 180 mg/dL | 10% | 2%–43% | less than 25% |
| Time below 70 mg/dL | 0% | 0%–1% | less than 4% |
| Average glucose | 132 mg/dL | 119–176 mg/dL | — |
| GMI (A1C estimate from the sensor) | 6.5% | 6.2–7.5% | under 7% for many adults |
| Glucose variability (CV) | 23% | 20–28% | 36% or less |
68% of people met the more-than-70% time-in-range goal, 95% kept lows under 4% of the day, and 65% had a GMI under 7%.
When in the day is glucose highest?
Averaged across the group, glucose was lowest around 1:00 at night, climbed through the early morning to a peak around 6:00–7:00, stayed raised through the day, and had a second peak around 18:00 before falling at night.
| Hour (local time) | Average glucose (mg/dL) |
|---|---|
| 00:00 | 125 |
| 01:00 | 124 |
| 02:00 | 128 |
| 03:00 | 134 |
| 04:00 | 141 |
| 05:00 | 149 |
| 06:00 | 157 |
| 07:00 | 157 |
| 08:00 | 150 |
| 09:00 | 147 |
| 10:00 | 150 |
| 11:00 | 150 |
| 12:00 | 149 |
| 13:00 | 147 |
| 14:00 | 145 |
| 15:00 | 147 |
| 16:00 | 150 |
| 17:00 | 156 |
| 18:00 | 159 |
| 19:00 | 152 |
| 20:00 | 144 |
| 21:00 | 136 |
| 22:00 | 130 |
| 23:00 | 126 |
How big are glucose rises, and how long do they take?
The app detects a rise when glucose climbs quickly from a steady level. Across 3,309 rises from 46 people, the median rise was 63 mg/dL above the starting level, and the median time from the start of the rise to its peak was 65 minutes.
| Time the rise started | Rises | People | Median rise | Median minutes to peak |
|---|---|---|---|---|
| Morning (05:00–11:00) | 1,116 | 45 | 65 mg/dL | 66 |
| Midday (11:00–16:00) | 892 | 43 | 64 mg/dL | 65 |
| Evening (16:00–22:00) | 548 | 40 | 59 mg/dL | 64 |
| Night (22:00–05:00) | 753 | 44 | 61 mg/dL | 66 |
More rises started in the morning than at any other time. A rise is not always a meal: the morning climb, stress, illness and some medicines can all raise glucose.
How we made this report
- Sensor readings between 40 and 400 mg/dL; calibration readings left out.
- People counted only with at least seven days of data and at least half of a day's readings on average.
- Staff, test and demo accounts left out.
- Time in range, time above and below, GMI (3.31 + 0.02392 × average glucose) and CV (standard deviation ÷ average) worked out per person, then summarised as the median and the middle half (25th to 75th percentile).
- Only figures that describe at least 20 people are published. No names, dates of birth, locations or individual readings leave our systems.
See your own pattern (free check)
Common questions
What is a normal time in range on a CGM?
For most adults with diabetes, the international target is more than 70% of the day between 70 and 180 mg/dL, with less than 4% below 70 mg/dL. Your own target may differ, so ask your doctor.
Why is my blood sugar highest in the morning?
In this group, average glucose climbed from about 4 am to a peak around 6–7 am, before breakfast for many people. Morning hormones raise glucose, and the pattern is common; your doctor can tell you whether your own morning numbers need a change in treatment.
How long after eating does blood sugar peak?
In this group the median glucose rise reached its peak about 65 minutes after it started. The ADA measures the after-meal target 1–2 hours after the start of a meal, which matches this pattern.
What is GMI?
GMI (glucose management indicator) is an estimate of A1C worked out from at least 14 days of CGM data: 3.31 + 0.02392 × average glucose in mg/dL. It can differ from a lab A1C.
Is my data in this report?
Only as part of group totals. Every figure describes at least 20 people, and no individual readings, names or locations are published.
Sources
- Battelino T et al. Clinical Targets for Continuous Glucose Monitoring Data Interpretation: Recommendations From the International Consensus on Time in Range. Diabetes Care 2019.
- American Diabetes Association. 6. Glycemic Goals, Hypoglycemia, and Hyperglycemic Crises: Standards of Care in Diabetes—2026.
- Bergenstal RM et al. Glucose Management Indicator (GMI): A New Term for Estimating A1C From Continuous Glucose Monitoring. Diabetes Care 2018.
- Nathan DM et al. Translating the A1C assay into estimated average glucose values (ADAG study). Diabetes Care 2008.
Last updated: . Educational information, not medical advice. Talk to your doctor before changing your treatment.