Trend Direction
3 min readThe trend direction tells you whether your fasting glucose is improving, holding steady, or moving in the wrong direction over recent weeks. It is a quick-glance signal that helps you see the direction your glucose control is heading, not just where it stands today.
How It Works
The app compares your 3-day average fasting glucose to your 7-day average fasting glucose. This short-vs-longer-term comparison reveals whether recent days are better or worse than the past week as a whole.
- Down arrow (improving): Your 3-day average is more than 5 mg/dL lower than your 7-day average. Recent days are trending better.
- Right arrow (stable): The two averages are within 5 mg/dL of each other. Your glucose is consistent.
- Up arrow (needs attention): Your 3-day average is more than 5 mg/dL higher than your 7-day average. Recent days are trending worse.
The 5 mg/dL threshold is used because differences smaller than this are within normal day-to-day variation and would not reliably indicate a real change.
Your Target
A stable or improving trend is the goal. Even if your absolute fasting glucose is still in the prediabetic range, a downward trend is a clear sign that your efforts are working. A rising trend over several weeks is worth investigating, even if individual readings look acceptable.
Why This Matters
A single fasting reading can be affected by one bad night of sleep, an unusually stressful day, or a late meal. The trend smooths out these daily fluctuations to show what is genuinely changing in your glucose control. Catching a worsening trend early — before it shows up in a lab result — gives you time to make adjustments without medical intervention.
What You Can Do
- If you see an upward trend, look back at the past few days: did sleep worsen, has stress increased, or have there been dietary changes (festive foods, travel)?
- A consistent downward trend after starting a new habit (daily walks, portion control, millet swap) is meaningful positive feedback worth acknowledging.
- Make sure you have at least 7 fasting readings for this metric to be reliable. With fewer readings, the arrows may fluctuate due to insufficient data.
Based on: American Diabetes Association Standards of Care 2023; Bergenstal et al., Diabetes Care 2018
View full citations
- American Diabetes Association. "Standards of Medical Care in Diabetes — 2023." Diabetes Care. 2023;46(Suppl 1). https://doi.org/10.2337/dc23-S006
- Bergenstal RM, et al. "Glucose Management Indicator (GMI): A New Term for Estimating A1C From Continuous Glucose Monitoring." Diabetes Care. 2018;41(11):2275–2280. https://doi.org/10.2337/dc18-1581
- Rodbard D. "Glucose Variability: A Review of Clinical Applications and Research Developments." Diabetes Technology & Therapeutics. 2018;20(S2):S25–S215. https://doi.org/10.1089/dia.2018.0092