Why does your blood sugar go up and down?
Blood sugar fluctuations are common and can happen for several reasons. Understanding what causes these changes can help you manage them better.
Common causes of blood sugar swings include:
* Stress and illness - When you're stressed or sick, your body releases hormones like Show Full Answer
Why does your blood sugar go up and down?
Blood sugar fluctuations are common and can happen for several reasons. Understanding what causes these changes can help you manage them better.
Common causes of blood sugar swings include:
* Stress and illness - When you're stressed or sick, your body releases hormones like cortisol and adrenaline that tell your liver to release stored glucose, raising your blood sugar
* Pain - Being in pain triggers a stress response that can spike your blood sugar levels
* Changes in diet and activity - Skipping meals, eating high-carb foods, or being less active than usual can affect your levels
* Medications - Some medications like steroids, certain antipsychotics, and immunosuppressants can raise blood sugar
* Timing of meals - Testing too soon after eating, especially after high-carb meals, can show higher readings
Physical factors that matter:
* Infections cause your body to fight back by releasing stress hormones, which naturally raises glucose levels
* Reduced activity when you're not feeling well can lead to higher readings
* Dehydration can also impact your blood sugar levels
If your blood sugar keeps swinging despite making adjustments to your routine, it's important to talk with your doctor about your diabetes management plan. They may need to adjust your medications or help you identify specific triggers.
December 23, 2025
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