24/09/2026
9 Signs of High Blood Glucose
High blood glucose (hyperglycemia) happens when there is too much sugar in the blood. Mild elevations may cause no symptoms, while higher levels can cause dehydration and other noticeable changes.
🟣 1. Increased Thirst
➟ High blood sugar pulls water out of body tissues
➟ You may feel unusually thirsty even after drinking fluids
🟣 2. Frequent Urination
➟ The kidneys try to remove excess glucose through urine
➟ You may need to urinate more often, including at night
🟣 3. Dry Mouth
➟ Fluid loss can make the mouth feel dry or sticky
➟ This often occurs along with increased thirst
🟣 4. Increased Hunger
➟ You may feel hungry even after eating
➟ This can happen when glucose is not being used effectively by the body’s cells
🟣 5. Fatigue or Low Energy
➟ High glucose can make you feel tired, weak, or drained
➟ Fatigue is common but not specific to diabetes
🟣 6. Blurred Vision
➟ High glucose can temporarily change fluid balance in the lens of the eye
➟ Vision may become blurry or fluctuate
🟣 7. Unexplained Weight Loss
➟ More common when diabetes is significantly uncontrolled, especially in type 1 diabetes
➟ The body may begin breaking down fat and muscle for energy
🟣 8. Slow Healing or Repeated Infections
➟ Cuts and wounds may heal more slowly
➟ Skin, urinary, or ge***al infections may occur more frequently
🟣 9. Nausea or Fruity-Smelling Breath
➟ Very high glucose with ketone buildup may cause nausea, vomiting, abdominal pain, or fruity breath
➟ This can suggest diabetic ketoacidosis (DKA), especially in type 1 diabetes
🟣 What to Do
➟ Check blood glucose if possible
➟ Stay hydrated unless a doctor has advised fluid restriction
➟ Take diabetes medicines or insulin exactly as prescribed
➟ Seek medical review if high readings are persistent or symptoms are worsening
🟣 Seek Urgent Medical Help If
➟ There is repeated vomiting or severe abdominal pain
➟ Breathing becomes deep or rapid
➟ Fruity breath, severe dehydration, confusion, or drowsiness develops
➟ Blood glucose is very high and ketones are present
Medical disclaimer: This information is for general educational purposes only and does not replace professional medical advice, diagnosis, or treatment. High blood glucose should be confirmed with appropriate testing, and severe symptoms or suspected DKA require urgent medical care.