By Dr. Sk Sabir Rahaman, MBBS, MD (Pharmacology), DFM(Family Medicine), FCFM, CCEBDM, CCLSD
When it comes to managing diabetes, timing is everything. From insulin shots to understanding morning blood sugar spikes, punctuality can make the difference between stable control and frustrating fluctuations.
⏰ 1. Optimal Timing for Insulin Administration
Insulin works best when its peak action matches the rise in blood sugar after a meal.
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For regular insulin, inject ~30 minutes before eating.
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For rapid-acting insulin (e.g., lispro, aspart), inject just before or right after a meal.
✅ Why it matters: Perfect timing prevents post-meal sugar spikes and helps keep your readings steady.
🌅 2. Dawn Phenomenon & Morning Hyperglycemia
Ever checked your fasting sugar in the morning and thought: “But I didn’t even eat!” 🤔
Two common reasons:
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Dawn Phenomenon – In the early morning hours, hormones like cortisol and growth hormone signal your liver to release glucose, raising blood sugar before breakfast.
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Insufficient Evening Insulin – Too little long-acting insulin at night means your body isn’t controlling glucose production while you sleep.
🩺 How to Find Out the Cause
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Monitor your blood sugar at 2–3 a.m. for several nights.
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Share your readings with your healthcare provider.
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Your doctor can then adjust your evening insulin dose, timing, or type to better match your body’s needs.
✅ Takeaway
⏳ Be on time with your insulin.
🌅 Don’t ignore unexplained morning highs.
🩺 Work with your care team to personalize your insulin schedule.
Small changes in timing can bring BIG improvements in your sugar control.
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