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This Week's Blood Glucose Management Summary
Looking back at my blood glucose management this week, I feel that overall it was a very productive week. In particular, my Time in Range (TIR: the percentage of time blood glucose levels remained within the target range) exceeded the target benchmark of 70%, and being able to secure many stable periods has given me a great deal of confidence. I am happy to see that small daily efforts are reflecting well in the numbers.
On the other hand, I was concerned about instances where my blood glucose levels rose significantly for a temporary period in the afternoon on certain days of the week. This week's challenge has revealed that variations in blood glucose fluctuations depend on the contents of my lunch and how I spent my time afterward.
Heading into next week, I want to focus on how to gently control these sharp afternoon spikes. Rather than aiming for perfection, I will take it step-by-step with a positive attitude, staying in tune with my body's natural rhythm.
Weekly Trend Analysis
Looking at this week's trends, the average blood glucose level was 159 mg/dL, and the Time in Range (TIR) was 75.3%, maintaining a good standard of control. Additionally, the Coefficient of Variation (CV), which indicates the fluctuation in blood glucose levels, was 32.7%, safely below the 36% threshold generally considered a benchmark for stability.
Please note that specific values for the Glucose Management Indicator (GMI: an index close to estimated HbA1c) and the detailed percentages of high and low blood glucose could not be confirmed from the image. Additionally, a detailed comparison with the previous week's data could not be verified from the image; however, the current situation where TIR exceeds 75% is considered a very positive change. Although there was a temporary spike in high blood glucose on Friday (peak at 365 mg/dL), the overall trend did not collapse significantly, and I feel a stable foundation is being established.
Daily Summary Analysis
Reflecting on the daily trends, there were characteristic movements depending on the day of the week. The best day this week was Thursday (7/23), with an average blood glucose level of 124 mg/dL and a peak of only 175 mg/dL, achieving highly stable and ideal control throughout the day. It is likely that food choices and moderate post-meal activity aligned well on this day.
Conversely, Friday (7/24) saw the largest fluctuations, with the average blood glucose level rising to 189 mg/dL and recording the week's peak of 365 mg/dL in the afternoon. Tuesday (7/21) also showed a significant increase from afternoon to evening, with an average blood glucose level of 171 mg/dL (peak of 318 mg/dL). It is suspected that lifestyle habits, such as an imbalance in carbohydrate intake during lunch or decreased physical activity after meals, may be associated with these days.
AGP Analysis
Analyzing the AGP (Ambulatory Glucose Profile), which comprehensively shows the 24-hour blood glucose fluctuation pattern, highlights distinct characteristics for each time period. First, during the nighttime hours (00:00 to 06:00), although blood glucose levels trended around 150 to 180 mg/dL—close to the upper target limit (180 mg/dL)—the width of the graph (variation) was extremely narrow, showing highly stable trends throughout the night.
From morning to noon (06:00 to 12:00), blood glucose levels tend to decline gradually toward around 100 mg/dL. Even during the period when blood glucose levels were at their lowest, no trend of severe hypoglycemia falling below the 70 mg/dL baseline could be confirmed from the image, suggesting that the risk of hypoglycemia was low throughout this entire week.
On the other hand, the afternoon period (around 13:00 to 18:00) is the point where the risk of hyperglycemia and the range of fluctuation are greatest. While the median (50% line) remains around 150 mg/dL, the shading representing daily variation (especially the 95% line) extends significantly upward past 300 mg/dL, indicating that there is a large intra-individual variation in blood glucose elevation after lunch.
What Went Well This Week
- Time in Range (TIR) reached 75.3%, successfully clearing the recommended benchmark of 70% or higher.
- The Coefficient of Variation (CV), showing blood glucose fluctuations, stayed within 32.7%, maintaining the target threshold of 36% or lower.
- Achieved an outstanding and highly stable trend on Thursday (7/23), remaining within the target range all day.
- Blood glucose fluctuations from nighttime to early morning were extremely small, showing high glucose stability during sleep.
Points to Improve Next Week
- Be mindful of approaches to suppress rapid post-meal blood glucose spikes (glucose spikes) after lunch, as seen on Tuesday and Friday afternoons.
- Adjust the eating order during lunch (such as vegetables first) and incorporate activities like a light walk after meals.
- Stay mindful of the overall picture by combining daily physical changes with metrics that could not be verified from the image, such as GMI and comparisons with the previous week.
Summary
This week was a delightful one, as I identified a specific improvement theme—the sharp post-lunch spike—while achieving an excellent result of 75.3% TIR. I feel that by carefully listening to my body, I am gradually grasping the knack of blood glucose control. The goal is not just perfect control, but living a comfortable and healthy life every day. Let's continue managing blood glucose with a positive mindset and have fun with it next week!
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