High Blood Sugar Levels
If you have diabetes, you can find out if your blood sugar level is high by having a blood sugar test.
You may have regular tests by your care team or GP surgery, or you may have tests you can do at home.
Type of test | High level |
---|---|
Test done by a health professional to check your blood sugar level over the last 2 or 3 months | 48 mmol/mol or over |
Test done by a health professional after not eating for a few hours | Over 7 mmol/L |
Home test done after waking up or before eating | Over 7 mmol/L |
Home test done at any other time | Over 11 mmol/L |
Knowing Your High And Low Blood Sugar Symptoms Allows You To Test
Once you understand symptoms of high and low blood sugar, it is possible to test quickly and avoid serious problems.
Keeping to a clear target range is one of the key goals of diabetes management, and knowing when you have the symptoms of high or low blood sugar levels allows you to test your blood sugar and make a correction.
It can be important to recognise the difference between low and high blood sugar symptoms. Being able to spot when youre high or low and sugar can help you to manage your diabetes.
Where possible, its best to check with your blood glucose meter, whether you are high or low, before taking any remedial action. If blood sugar is regularly high you may get recurrent episodes of thrush.
High blood sugar is serious and can result in nausea, vomiting or loss of consciousness. In type 2 diabetes, this can in the form of a condition called Hyperosmolar Hyperglycaemic State and in type 1 diabetes in the form of ketoacidosis.
It is important to seek emergency medical help.
Very low blood sugar can lead to convulsions and unconsciousness. It is important to seek emergency help if the person with diabetes is unable to bring their sugar levels back to normal.
The University of Birminghams Medical School states that if the body becomes used to being low on sugar, hypo symptoms can become less noticeable. Loss of symptoms of low blood sugar in particular can be dangerous.
If you have difficulty recognising the symptoms of hypoglycemia, speak to your doctor.
You Feel Tiredness And Fatigue Constantly
Fatigue and extreme tiredness are symptoms of uncontrolled blood sugar, the ADA says. Simply put, when your body is not processing insulin properly or it doesnt have sufficient amounts of insulin, the sugar is staying in our blood rather than getting into our cells to be used for energy, Zanini says. Also, frequent urination can lead to dehydration, which Bandukwala identifies as another contributing factor to fatigue.
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What Causes High Morning Blood Sugars
Two main culprits prompt morning highs: the dawn phenomenon and waning insulin. A third, much rarer cause, known as the Somogyi effect, may also be to blame.
The occasional morning high will have little impact on your A1C, a measure of your average blood sugar levels over time that indicates how well managed your diabetes is. But if those highs become consistent, they could push your A1C up into dangerous territory.
What To Do If You Have Signs Of Diabetes

Feeling unusually thirsty or tired for a day or two probably isnt a big deal. But if the symptoms stick around for more than a couple of days, or theyre accompanied by other symptoms, get them checked out ASAP. These are clear signs of diabetes, and you should go to the doctor right away, Dr. Halprin says.
Your doctor will perform a blood test to test your blood sugar levels. If theyre too high, he may recommend medication to help you manage your levels. But lifestyle changes can make a big difference, too. A healthy diet thats high in plant-based foods and low in sugar has been shown to reverse pre-diabetes and diabetes, Dr. Fuhrman says.
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How Can I Treat Low Blood Sugar
If youve had low blood sugar without feeling or noticing symptoms , you may need to check your blood sugar more often to see if its low and treat it. Driving with low blood sugar can be dangerous, so be sure to check your blood sugar before you get behind the wheel.
Carry supplies for treating low blood sugar with you. If you feel shaky, sweaty, or very hungry or have other symptoms, check your blood sugar. Even if you dont have symptoms but think you may have low blood sugar, check it. If your blood sugar is lower than 70 mg/dL, do one of the following immediately:
- Take four glucose tablets.
- Drink four ounces of fruit juice.
- Drink four ounces of regular soda, not diet soda.
- Eat four pieces of hard candy.
Wait for 15 minutes and then check your blood sugar again. Do one of the above treatments again until your blood sugar is 70 mg/dL or above and eat a snack if your next meal is an hour or more away. If you have problems with low blood sugar, ask your doctor if your treatment plan needs to be changed.
How Are High Blood Sugar Levels Treated
Treating high blood sugar levels involves fixing what caused them in the first place. Your diabetes health care team will give you specific advice on how to keep your blood sugar levels in a healthy range. But here are some ways to manage the common causes of high blood sugar levels:
Reason for High Blood Sugar Level | What to Do |
---|---|
Not getting enough insulin or other diabetes medicine |
|
Not following the meal plan |
|
Not getting enough exercise |
|
Illness or stress |
|
Use of other medicines that can increase blood sugar |
|
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Warning Signs That Your Blood Sugar Is High:
How would you know if your blood sugar has shot through the roof? You can spot the warning signs of high blood sugar even before you see the doctor. If you notice any of them, arrange for an appointment at once!
1. Dehydration
Your skin will feel dry and scaly if your blood sugar levels are on the high end. You may have problems urinating as well. Dehydration can cause diabetic ketoacidosis or too many acids building up in the body. It can lead to organ failure or death.
2. Feeling Parched
Are you always reaching for water, even if the weather is not too hot? Constant thirst indicates dehydration. It shows you that you have to work at making your blood sugar levels drop.
3. Diarrhea
Having constant diarrhea is a warning symptom of Hyperglycemia. Seek a doctors help if your stools are runny. There may be an overgrowth of bacteria in your intestines. Also, it may be difficult for them to break down sugar.
4. Loss of Appetite
Hyperglycemia can create a condition known as Gastroparesis when food moves slowly through the digestive tract. Food cannot move out of the stomach and into the small intestine. A person with Hyperglycemia will lose his appetite because he has a clogged stomach.
5. Excessive Hunger Pangs
6. Impotence
Sex may not bring you the same satisfaction it used to. High blood sugar has links with Erectile Dysfunction or ED. Men with diabetes may develop ED because the blood vessels and nerves that prompt erections are weak.
7. Open Cuts
8. Itchiness
14. Fatigue
Tingling Hands And Feet
Over the years, hyperglycemia can begin to impact nerve function and eventually cause nerve damage, called neuropathy, Dr. Hatipoglu says. The most common kind of neuropathy is peripheral, according to the NIDDK, which affects the extremities. You might start noticing feelings of tingling, numbness, or burning in your hands, feet, arms, and legs, per the Mayo Clinic.
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Low Blood Sugar Level Causes
Most low blood sugar level causes are preventable and are caused due to a persons lifestyle and diet habits. Low blood sugar is common among diabetic patients who take medications to increase insulin levels.
All of the above causes are risk factors that may or may not be able to be inhibited. They are important to be aware of and act accordingly to keep yourself from getting a too high or too low blood sugar level.
If a person has medical, lifestyle or diet habits that cause irregular blood sugar levels, symptoms will begin to develop along with the drop or spike in blood sugar, and are as follows:
Signs That May Indicate You Are At Risk For Diabetes
**This article is a repost of an earlier written article. We are reposting because we believe the information is valuable and pertinent to many.**
According to the CDC, over 9% of Americans are living with diabetes. This illness is becoming increasingly common, with 1.5 million Americans being diagnosed with diabetes every year.
There are some serious complications that can come with having high blood sugar such as heart failure and stroke. However, diabetes can be managed with prescription medication, diet, and exercise to help you live a normal, healthy life.
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What Are The Warning Signs Of Diabetes
Untreated diabetes tends to cause worsening symptoms over time as chronically high blood sugar levels cause more damage to your tissues and organs. You may not recognize these warning signs in the beginning if theyre mild.
The symptoms of type 2 diabetes tend to come on more gradually than type 1 diabetes. In the early stages of diabetes, there may be no symptoms at all.
Its important that you visit your doctor if you notice any potential warning signs of diabetes. If left untreated, diabetes can severely damage the tissues and organs in your body.
What Else Can I Do To Help Manage My Blood Sugar Levels

Eating a healthy diet with plenty of fruit and vegetables, maintaining a healthy weight, and getting regular physical activity can all help. Other tips include:
- Keep track of your blood sugar levels to see what makes them go up or down.
- Eat at regular times, and dont skip meals.
- Choose foods lower in calories, saturated fat, trans fat, sugar, and salt.
- Track your food, drink, and physical activity.
- Drink water instead of juice or soda.
- Limit alcoholic drinks.
- For a sweet treat, choose fruit.
- Control your food portions .
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Severe Low Blood Sugar
As your low blood sugar gets worse, you may experience more serious symptoms, including:
- Feeling weak.
- Having difficulty walking or seeing clearly.
- Acting strange or feeling confused.
- Having seizures.
Severe low blood sugar is below 54 mg/dL. Blood sugar this low may make you faint . Often, youll need someone to help you treat severe low blood sugar.
People with diabetes may experience low blood sugar as often as once or twice a week, even when managing their blood sugar closely. Knowing how to identify and treat it is important for your health. Learn how to treat low blood sugar.
You Develop Sores That Tend To Heal More Slowly Than Usual
Cuts, scrapes, bruises, and other wounds heal more slowly in the presence of uncontrolled blood sugar, according to the National Institute of Diabetes and Digestive and Kidney Diseases. Diabetes causes nerve damage and affects circulation, especially in the lower legs and feet, which can delay healing because there isnt enough blood flow to the area. Even minor wounds are more prone to infections, which can become very serious and even result in amputations of the foot. You may notice drainage seeping onto your socks or an unpleasant smell if you develop a foot ulcer, notes the American Podiatric Medical Association.
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How Is Diabetes Treated
Diabetes can be treated in several ways. Diet, physical activity, and careful monitoring are important if you have diabetes, no matter which type of diabetes you have.
If you have type 1 diabetes, you will need to take insulin for the rest of your life. Thats because your pancreas doesnt produce the insulin your body needs.
If you have type 2 diabetes, it may be possible to control your diabetes with lifestyle changes, such as diet, weight loss, and exercise. You may also need to take oral or injectable medications, including insulin or metformin, to manage your blood sugar levels.
If you have either type 1 or type 2 diabetes, youll need to carefully track your diet to prevent your blood sugar levels from getting too high. This generally means watching your carbohydrate intake as well as limiting over-processed, low fiber foods, such as:
- sugary sodas
- fruit-flavored yogurt
- flavored coffee drinks
Your doctor will work closely with you to develop a treatment plan to help you control your blood sugar levels.
What Factors Affect Blood Sugar
You can guess that carbohydrate intake and insulin production are at least partly responsible for your blood sugar levels. But the list is much longer — almost every lifestyle choice you make can affect your blood sugar. Here’s just a partial list.
- Exercise can affect insulin sensitivity, leading to lower blood sugar for up to 48 hours.
- Alcohol intake increases insulin production, causing low blood sugar.
- Stress hormones like cortisol can raise blood sugar, because your body wants access to energy in order to escape what it perceives as a dangerous situation.
- Medications, especially statins and diuretics, can raise blood sugar. Statins are used to treat cholesterol, and diuretics for high blood pressure.
- Diet is a major player in blood sugar. Eating too many simple carbs at once can cause levels to skyrocket, while protein intake leads to a slower increase in blood sugar.
- Dehydration raises blood sugar, because with less water in your body the glucose concentration will be higher.
Other surprising factors can affect your blood sugar, like a sunburn or gum disease, so if you’re dealing with a blood sugar issue and can’t figure out what’s causing your spikes and dips, talk to a health care professional.
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High Blood Sugar: Causes Complications And How To Lower Blood Sugar
Your body breaks down glucose for energy using the insulin produced by the pancreas. This is required for our bodies to function. Illness can have an impact on the way our pancreas functions. Read this to learn how high blood sugar can affect your health.
7 minute read
Your body requires energy to function, and this energy comes from food. Specifically, your body breaks down glucose for energy using the insulin produced by the pancreas.
Type 1 and type 2 diabetes cause impairment to this breakdown of sugar in the body, causing blood glucose levels to become irregular. When glucose is not broken down into energy, it can build up in the bloodstream and then becomes a health problem.
Your pancreas produces insulin, which breaks down glucose. With type 1 diabetes, the cells that produce insulin are mistakenly attacked by your immune system. As a result of this autoimmune condition, blood sugar levels can become dangerously high without intervention.
Type 2 diabetes occurs when your body no longer responds to insulin as well as it should and then also causes glucose to accumulate in the blood.
You’re Noticing Skin Tags And Other Skin Issues
Skin tags and other skin issues can be a sign that something is wrong with your blood glucose levels. People with diabetes frequently have to deal with these types of things because high glucose levels affect the way cells produce collagen, making it difficult for the body to heal itself properly after an injury or wound occurs.
In addition, high glucose levels can cause blood vessels to become damaged, which leads to skin issues such as spider veins and rosacea. It’s important that you make sure you’re getting enough Vitamin A in your meal plan, so the body has what it needs to keep itself strong and healthy.
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How Is Hyperglycemia Diagnosed
If you have diabetes and notice a sudden change in your blood sugar levels during your home monitoring, you should alert your doctor of your symptoms. The increase in blood sugar may affect your treatment plan.
Regardless of whether you have diabetes, if you begin experiencing any symptoms of hyperglycemia, you should speak to your doctor. Before going to your appointment, you should note what symptoms youre experiencing. You should also consider these questions:
- Has your diet changed?
- Have you had enough water to drink?
- Are you under a lot of stress?
- Were you just in the hospital for surgery?
- Were you involved in an accident?
Once at your doctors appointment, your doctor will discuss all of your concerns. Theyll perform a brief physical exam and discuss your family history. Your doctor will also discuss your target blood sugar level.
If youre age 59 or younger, a safe blood sugar range is generally between 80 and 120 milligrams per deciliter . This is also the projected range for people who dont have any underlying medical conditions.
People who are age 60 or older and those who have other medical conditions or concerns may have levels between 100 and 140 mg/dL.
Your doctor may conduct an A1C test to determine what your average blood sugar level has been in recent months. This is done by measuring the amount of blood sugar attached to the oxygen-carrying protein hemoglobin in your red blood cells.