Low and High Blood Sugar: Symptoms and Action
Recognise the warning signs and know when to get help.
Low blood sugar
Shakiness, sweating, hunger, confusion and fast heartbeat can signal hypoglycaemia. Treat quickly with fast-acting carbohydrate.
High blood sugar
Thirst, frequent urination, blurry vision and tiredness are common. Very high readings with nausea or breathing changes need urgent care.
Be prepared
Carry fast-acting sugar if you use insulin or sulfonylureas, wear identification and teach others what to do in an emergency.
Try it: Blood Glucose Converter & Checker
Example with sample values. Open the full calculator →
mg/dL95
mmol/L5.3
A fasting level of 70–99 mg/dL is normal.
Educational content only. This article does not replace advice from a qualified health professional. Medical disclaimer.