Low blood sugar (hypoglycaemia)Overview


Low blood sugar (hypoglycaemia) is when your blood sugar drops too low. It mainly affects people with diabetes.


Signs of low blood sugar include trembling and tingling lips. If not treated, you may get other symptoms, like feeling weak and blurred vision.


To treat low blood sugar, quickly have some sweets or a non-diet sugary drink. Then have some carbohydrate as a snack, like toast or a main meal.


If you have diabetes, low blood sugar can be caused by taking too much diabetes medicine, skipping meals or intense exercise.


You can lower your risk of low blood sugar if you have diabetes by checking your blood sugar, carrying a sugary snack with you and not skipping meals.

Page last reviewed: 17/08/2017
Next review due: 17/08/2020