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Hello everyone! Today, I'm reporting on a day of intense blood sugar fluctuations, as recorded on my CGM (Continuous Glucose Monitor) graph.
I'll be looking back at a day where a moment of complacency – thinking 'I walked a lot, so I'll be fine!' – combined with insulin timing and the actual meal choices, spectacularly led to a severe blood sugar spike followed by a roller-coaster ride.
A Day's Blood Sugar Graph (CGM Data)
(CGM graph showing a rapid climb to nearly 300 mg/dL after 14:00 and a sharp drop to around 60 mg/dL around 22:00)
Timeline of Activities, Meals, and Insulin on This Day
- 10:00 AM ~ 3:00 PM Long walk in the Omotesando-Roppongi area (a solid 5 hours of walking)
- Around 12:00 PM (Lunch) Udon + Shirasu-don at Udon Shiki Roppongi Before meal: Humalog 12 units
- 3:00 PM (Snack) "Kürtősh" + Coffee at Balaton Cafe Omotesando
- Around 9:00 PM (Dinner) Low-carb meal (hot pot vegetables and pork) Before meal: Humalog 12 units + Tresiba 7 units
- Around 10:00 PM Blood sugar plummeted to around 60 mg/dL (entering hypoglycemic range)
- 10:30 PM (Correction Snack) Consumed Ramune, half a Dekopon orange, and 2 strawberries ➔ Successfully recovered afterwards
What Happened? Analyzing the Blood Sugar Rollercoaster Mechanism
The 5-hour walk depleted my body's sugar energy, leaving my cells in a 'starved state,' intensely craving glucose. Into this state, I rapidly consumed a 'Kürtősh' — packed with sugar and flour, and incredibly fast-absorbing — which caused a ferocious blood sugar spike, shooting up to nearly 300 mg/dL.
I administered insulin before dinner, but the side dish was a 'hot pot' – an extremely low-carb meal. This meant there wasn't enough carbohydrate to counteract the insulin. Furthermore, the residual effect of the 5-hour walk made the insulin several times more effective than usual, causing my blood sugar to plummet abruptly to 60 mg/dL.
A Fine Play Against Hypoglycemia: My Correction Snack Choice
The Divine Relay: "Ramune + Half a Dekopon ➔ 2 Strawberries"
As my blood sugar dropped to around 60 mg/dL and symptoms appeared, I used fast-acting Ramune (glucose) for an emergency rescue. Afterwards, to prevent a 'second dip' from lingering insulin effects, I sustained sugar absorption gradually with the water and fiber from the fruits. My blood sugar then maintained a nice flat line around 80-90 mg/dL!
Future Strategies and Lessons Learned (Summary)
- Avoid the 'first bite' of sweets after prolonged exercise: Have coffee as a latte, or eat some nuts or protein before indulging in Kürtősh.
- Balance dinner menu and insulin on exercise days: If cutting carbs and only eating hot pot, reduce insulin units after consulting your doctor. Alternatively, since it's after exercise, intentionally eat a moderate amount of rice to balance it out.
- Share data with your doctor: Discuss this valuable pattern data – 'long exercise + no-carb dinner + usual insulin dose = hypoglycemia' – at your next appointment.
Manager's Recommended Blood Sugar Management & Useful Items
About the Shop and 'Kürtősh'
💡 Many people might not know? What is 'Kürtősh,' a traditional Hungarian sweet?
The 3 PM snack I had at Balaton Cafe in Omotesando was 'Kürtősh,' a traditional Hungarian pastry. It's a unique sweet, characterized by its chimney-like shape, made by wrapping dough strings around a cylinder and baking it.
The freshly baked surface, generously coated with sugar and cinnamon, is absolutely delicious. However, its main components – flour, butter, and plenty of sugar – make it extremely high in carbohydrates, giving it the characteristic of dramatically spiking blood sugar when eaten alone.
📸 You can see photos of the cafe's atmosphere and Kürtősh on Balaton Cafe's official Instagram!
➔ Click here for Balaton Cafe Omotesando's official Instagram post
※Disclaimer & Important Notice
This report is a personal experience and a reflection on my blood sugar fluctuations. Diabetes conditions and insulin effectiveness vary individually. Regarding insulin dosage adjustments and dietary therapy, please always consult your own doctor and follow their instructions.
• Portion Sizes: The food portions and nutritional data featured in this blog are based on standard Japanese serving sizes, which may be smaller than typical Western servings.
• Net Carb Calculation: Net Carbs = Total Carbs - Dietary Fiber.
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*Medical Disclaimer: The content on this blog represents the author's personal records for informational purposes only. Always consult with your doctor.
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