What Happens During High Blood Sugar?

High blood sugar, also called hyperglycemia, happens when there’s too much sugar in the bloodstream.

This can happen because of:

• Eating too much sugar or carbs
• Missing medication
• Stress
• Illness
• Not exercising enough

When blood sugar gets too high, people may feel:

• Tired
• Thirsty
• Dizzy
• Headachy
• Hungry

If high blood sugar keeps happening for a long time, it can damage organs and nerves.

That’s why managing blood sugar is so important for people with diabetes.

The goal isn’t being perfect all the time — it’s just trying to stay as balanced as possible most days.