7 Alarming Signs Your Blood Sugar Is Too High
High blood sugar (hyperglycemia) occurs when there is too much glucose circulating in the blood. It is common in people with diabetes, but it can also happen when diabetes has not yet been diagnosed or when blood sugar is not well controlled.
Recognizing warning signs early can help prevent complications.
1. Increased thirst
When blood sugar is high, the kidneys try to remove excess glucose through urine. This can cause the body to lose more water, leading to:
- Strong thirst
- Dry mouth
- Needing to drink more often
2. Frequent urination
High glucose levels can cause the kidneys to produce more urine as they attempt to remove extra sugar from the bloodstream.
You may notice:
- More trips to the bathroom
- Waking up at night to urinate
3. Unusual tiredness
When glucose cannot move into cells properly for energy, you may feel:
- Weak
- Very tired
- Low in energy despite resting
4. Blurred vision
High blood sugar can temporarily affect the shape of the eye’s lens, causing:
- Blurry vision
- Difficulty focusing
Persistent vision changes should be checked by a healthcare professional.
5. Slow-healing cuts or wounds
High blood sugar can affect circulation and the immune system, making it harder for the body to repair injuries.
Watch for:
- Cuts that take longer to heal
- Frequent skin infections
6. Increased hunger
Some people with high blood sugar feel hungry more often because their body is not effectively using glucose for energy.
This may occur even after eating.
7. Tingling or numbness in hands and feet
Over time, high blood sugar can damage nerves, leading to:
- Pins-and-needles sensations
- Burning feelings
- Reduced feeling in the feet or hands
When to Seek Medical Help
Contact a healthcare professional if you have symptoms of high blood sugar, especially if you also have risk factors such as:
- A family history of diabetes
- High blood pressure
- Excess weight
- Previous abnormal blood sugar tests
Seek urgent medical care if high blood sugar is accompanied by:
- Severe nausea or vomiting
- Confusion
- Extreme weakness
- Trouble breathing
- Severe dehydration
