Hypoglycemia and hyperglycemia are words that you will hear quite often around the topic of diabetes, but what do they mean? In this blog, we look at how low and high blood sugar levels can affect you and how to treat them.
Hypoglycemia (hypo), or low blood sugar, is usually identified as a blood sugar reading below 4 mmol/L.1
Symptoms of hypoglycemia can vary, but common symptoms include:1
A hypo can occur for a variety of reasons, including:
When you experience a hypo, it is important to treat it immediately by eating or drinking a fast-acting carbohydrate. This can be in the form of fruit juice, sweets, glucose tablets, or energy gels. A way to remember what to do is to follow the rule of 15: consume 15 grams of carbs, wait 15 minutes, then check your blood sugar levels again. Repeat this process until your blood sugar returns to your target range.1
After having a hypo, try to eat 15-20g of a slower-acting carbohydrate, such as a sandwich, a piece of fruit or a glass of milk. This is to help prevent your blood sugar levels from going too low again.2
It is advised to re-check your blood sugar levels again an hour after your hypo to ensure they haven’t gone too high or are persistently low.
While this is a commonly used rule, it is always best to discuss with your healthcare team the best plan for you to follow.
There are so many factors that can cause your blood sugar to rise that it is not uncommon to experience hyperglycemia (hyper), or high blood sugar levels, if you are a person living with diabetes. Part of managing your diabetes involves checking your blood glucose levels frequently. Ask your doctor how often you should check and what your glucose sugar levels should be.
Symptoms of hyperglycaemia include:2
Regularly checking your blood sugar levels can help you identify when your levels go too high. When your blood sugar goes up, there are some ways you can help your body bring it back down:
If your blood sugar level is high for a short time, there is no need for emergency treatment. However, if left untreated, high blood sugar levels for a sustained period can lead to a condition called diabetic ketoacidosis (DKA), a serious condition that can lead to a diabetic coma.
If you have diabetes, either your body cannot produce insulin or cannot use it effectively. This means that when the food you eat is broken down to glucose, it cannot enter the cells in your body, and so it builds up in the blood.
Without insulin to address your rising blood sugar levels, your body breaks down fats to use as energy. When your body breaks down fats, it produces waste products called ketones.3 Your body cannot tolerate large amounts of ketones and will try to get rid of them through the urine. Unfortunately, when the body cannot release all the ketones, they build up in the blood, which can lead to DKA.
If your blood sugar level is above 13 mmol/L, it is recommended that you check your blood or urine for ketones.2 If ketones are present, you may need an extra dose of insulin, but it is always best to seek advice from your healthcare team.
When you are diagnosed with diabetes, you learn how your body reacts to different experiences, and you also likely know when things aren’t quite right. But how do you know when it is an emergency? How do you know when it is time to seek help?
A diabetic emergency occurs when symptoms become overwhelming and self‑treatment is no longer effective, at which point medical care is essential.4
The following signs can indicate a serious problem. If you experience any of these signs and are not able to treat them on your own, call for an ambulance right away:
If your friends, family, and others that you spend time with see any of the following signs, they should call an ambulance immediately:
Emergency planning can improve the chances that the signs and symptoms experienced don’t result in a less than favorable outcome.
People living with diabetes can prepare by:
Before making any changes to your lifestyle or medication, please speak to your healthcare professional to check it is suitable for you.
This content is provided for general information only. It is not intended to amount to advice on which you should rely – you must obtain professional or specialist advice from your healthcare professional before taking, or refraining from, any action on the basis of the content. Although we make reasonable efforts to ensure that the content is up to date, Roche makes no representations, warranties or guarantees, whether expressed or implied, that the content is accurate, complete, up-to-date or that it should be relied upon.
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