Non-diabetic hypoglycemia

Non-diabetic hypoglycaemia (low blood sugar)

This is when your blood sugar drops too low, even though you don’t have diabetes. There are two types of non-diabetic hypoglycaemia:

  • Fasting hypoglycaemia: this can happen if someone goes without food for eight hours or longer. It can also be caused by certain medicines, alcohol, exercise, other medical conditions such as liver disease, hypothyroidism and tumours.
  • Reactive hypoglycaemia: this can happen around two to four hours after a meal, preventing your muscles and brain cells from working properly. It can also be caused by too much insulin in the body, meals that are high in carbohydrates (white bread, sugar, etc), pre-diabetes, as well as surgery to the digestive system.

Signs of non-diabetic hypoglycaemia include:

  • Blurred vision or changes to vision
  • Feeling dizzy or lightheaded
  • Extreme tiredness (fatigue)
  • Palpitations
  • Excessive sweating
  • Headaches
  • Nausea
  • Anxiety, irritability or confusion
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