Glucose intolerance is a term used for metabolic conditions which result in higher than normal blood glucose levels known as hyperglycemia.


Conditions that can be considered as glucose intolerant include; pre-diabetes and type 2-diabetes.

Glucose intolerance includes anyone with either impaired fasting glucose (IFG) or impaired glucose tolerance (IGT) Glucose intolerance can be defined as:

A fasting blood glucose level of above 6.0 mmol/l

A fasting glucose level of over 7.8 mmol/l 2 hours after consuming 75g of glucose.


  • Feeling thirsty
  • Dry mouth
  • Blurred vision
  • Drowsiness
  • Frequent need to urinate
  • Loss of muscle mass

Glucose intolerance test:

Test performed to diagnose glucose intolerance include:

  • Fasting plasma glucose test
  • Oral glucose tolerance test


Treatment will either require lifestyle changes or a combination of lifestyle changes and anti-diabetic medication. You need to take part in regular physical activity, cut down on alcohol and smoking and you need to aim to lose weight.

You need to follow a balanced diet based on whole grain foods, rich in fruit and vegetables and low in sugar, salt and saturated fats. Take your medication and get regular physical activity to stay healthy.