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How To Know If Your Blood Sugar Is Low


Treating An Episode Of Hypoglycaemia

HOW DO YOU FEEL IF YOUR BLOOD SUGAR IS HIGH OR LOW?

The immediate treatment for hypoglycaemia is to have some sugary food or drink to end the attack.

For example, this could be:

  • a glass of fruit juice or non-diet soft drink
  • between three and five dextrose tablets
  • a handful of sweets

At first you should avoid fatty foods and drinks, such as chocolate and milk, because they don’t usually contain as much sugar and the sugar they do contain may be absorbed more slowly.

After having something sugary, you should have a longer-acting carbohydrate food, such as a few biscuits, a cereal bar, a piece of fruit or a sandwich.


It will usually take around 15 minutes to recover from a mild episode of hypoglycaemia. If you have a blood glucose meter, measure your blood sugar again after 15 to 20 minutes. If it’s still too low , you should have some more sugary food or a drink before testing your levels again in another 15 to 20 minutes.

When treating someone else with hypoglycaemia, if the above treatment isn’t effective, you may be able to help them by applying glucose gel to the inside of their cheeks, and gently massaging the outside of their cheeks.

It may take 10 to 15 minutes before they feel better. This shouldn’t be done if the person is drowsy or unconscious because of the risk of choking.

Checking For Low Blood Sugar Levels

The warning signs of hypoglycemia are the body’s natural response to low blood sugar levels. When blood sugar levels fall too low, the body releases the hormone adrenaline, which helps get stored glucose into the bloodstream quickly. This can make someone:

  • pale
  • start shaking
  • have an increased heart rate

If the hypoglycemia isn’t treated, more serious symptoms may happen, such as drowsiness, confusion, seizures, and loss of consciousness.


The only way to know for sure if you’re having a low blood sugar level is to test. Blood sugar levels can be tested with a . This computerized device measures and displays the amount of glucose in a blood sample. But if you can’t quickly check your blood sugar level, it’s important to treat yourself for hypoglycemia immediately to prevent symptoms from getting worse.

Sometimes a person with diabetes may have symptoms of low blood sugar levels, but blood sugar levels are not actually low. This is a called a false reaction. The hormone adrenaline is not just released when blood sugar drops too low it’s also released when blood sugar levels fall quickly when they’re too high. If you’re having a false reaction, you might actually have blood sugar levels in a healthy range but feel as if you have low blood sugar. Testing blood sugar levels before treating yourself for hypoglycemia can help you figure out if you’re having a false reaction.

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What Are The Complications Associated With Hypoglycemia

Its important to manage your hypoglycemia because it can cause long-term health problems. Your body needs glucose to function. Without the right level of glucose, your body will struggle to perform its normal functions. As a result, you may have difficulty thinking clearly and performing even simple tasks.

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Nighttime Low Blood Sugars

You may experience a low blood sugar night. The low blood sugar might wake you up and your symptoms might be similar to those you have during the day. However, the symptoms may be different. You might have nightmares, sleep poorly, perspire, or feel hot and cold. In the morning you may have a headache, feel nauseated, or feel confused. Notify your doctor if this happens. Check your blood sugar at the time you have the symptoms.


Treatment for a low blood sugar that occurs at night is the same as described earlier.

Your doctor may request that you check a 3:00 a.m. blood sugar 1 to 2 times per week in order to detect any low blood sugars during the night.

Disclaimer: This content is reviewed periodically and is subject to change as new health information becomes available. The information provided is intended to be informative and educational and is not a replacement for professional medical evaluation, advice, diagnosis or treatment by a health care professional.

A Low Blood Sugar Level Without Diabetes

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A low blood sugar level is uncommon in people who do not have diabetes.

Possible causes include:


  • a gastric bypass
  • other medical conditions, such as problems with your hormone levels, pancreas, liver, kidneys, adrenal glands or heart
  • some medicines, including quinine

See a GP if you think you keep getting symptoms of a low blood sugar level. They can arrange some simple tests to check if your blood sugar level is low and try to find out what’s causing it.

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What Causes Low Blood Glucose

  • Symptoms occur when blood glucose levels fall below 70 mg/dl a condition known as hypoglycemia.
  • In most cases, low blood glucose results from overtreatment: Either taking too much diabetes medication or not eating enough food. Higher doses of medicine than the person actually requires can also lead to hypoglycemia.
  • People who aim for too-low values on their A1C test tend to experience more frequent drops in blood glucose.
  • Vigorous exercise doesn’t just burn calories, it also burns blood glucose! Hypoglycemia can occur unless blood glucose levels are carefully monitored during and after exercise.
  • Not eating on a regular basis can deprive the body of glucose and make it difficult to prevent hypoglycemia. Eat balanced meals throughout the day and always keep a snack on hand.

Symptoms Signs Causes Of Levels Of High Blood Sugar In The Blood

High blood sugar or hyperglycemia is an abnormally high blood sugar level in the blood. Hyperglycemia is a hallmark sign of diabetes and prediabetes.

Signs and symptoms of hyperglycemia include blurred vision, headaches, hunger, and …

    The normal ranges for blood sugar levels in adults who do not have diabetes before eating or fasting the range begins at 72-99mg/dL while fasting ranges for those being treated for type 1 or type 2 diabetes range from 80 -130 mg/dL. According to the American Diabetes Association normal blood sugar levels before and after eating should be 80-130 mg/dL before eating a meal , and less than 180 mg/dL about 1-2 hours after eating a meal


    High blood sugar ranges for people who dont have diabetes begins at 140 mg/dL or greater while for those being treated for diabetes, the high range begins at 180 mg/dL , called hypoglycemia.

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      When Your Blood Sugar Gets Low

      Check your blood sugar whenever you have symptoms of low blood sugar. If your blood sugar is below 70 mg/dL, treat yourself right away.

      1. Eat something that has about 15 grams of carbohydrates. Examples are:

      • 3 glucose tablets
      • One half cup of fruit juice or regular, non-diet soda
      • 5 or 6 hard candies
      • 1 tablespoon or 15 mL of sugar, plain or dissolved in water
      • 1 tbsp of honey or syrup

      2. Wait about 15 minutes before eating any more. Be careful not to eat too much. This can cause high blood sugar and weight gain.


      3. Check your blood sugar again.

      4. If you do not feel better in 15 minutes and your blood sugar is still lower than 70 mg/dL , eat another snack with 15 g of carbohydrates.

      You may need to eat a snack with carbohydrates and protein if your blood sugar is in a safer range over 70 mg/dL and your next meal is more than an hour away.

      Ask your provider how to manage this situation. If these steps for raising your blood sugar do not work, call your doctor right away.

      S For Treating A Person With Symptoms Keeping Them From Being Able To Treat Themselves

      Hypoglycaemia – How to Treat and Prevent Low Blood Sugar
    • If the glucagon is injectable, inject it into the buttock, arm or thigh, following the instructions in the kit. If your glucagon is inhalable, follow the instructions on the package to administer it into the nostril.
    • When the person regains consciousness , they may experience nausea and vomiting.
    • Dont hesitate to call 911. If someone is unconscious and glucagon is not available or someone does not know how to use it, call 911 immediately.


      Do NOT:

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      Other Causes Of Low Blood Sugar

      While low blood sugar is often associated with diabetes, it can also be affected by other factors. According to Dr. Danine Fruge, Medical Director of the Pritikin Longevity Center in Miami, Florida, the causes of blood sugar problems can include not only “diabetes, prediabetes , reactive hypoglycemia or other health issues, but also by not eating enough, taking too much insulin or even taking certain diabetes medications.”

      Other medications can also cause hypoglycemia, like quinine, or Qualaquin, which is used to treat malaria, or various medications for kidney failure. Exercising more than usual can also cause it, especially while taking such medications.

      Some other potential causes for low blood sugar include:


      • Heavy drinking without eating
      • Eating without ingesting enough carbohydrates
      • Eating fewer carbs than usual without reducing insulin amounts, or improper balancing of liquid/solid carbs and timing of insulin
      • Hormone deficiencies due to adrenal or pituitary tumor disorders, or in children without sufficient growth hormone
      • Long-term starvation, such as that which can occur with anorexia nervosa
      • Serious illness like hepatitis, kidney disorders and liver disease
      • Pancreatic tumors that make the body secrete too much insulin

      What Causes Low Blood Sugar

      Despite advances in the treatment of diabetes, low blood sugar episodes occur as a side effect of many treatments for diabetes. In fact, these episodes are often the limiting factor in achieving optimal blood sugar control, because many medications that are effective in treating diabetes carry the risk of lowering the blood sugar level too much, causing symptoms. In large scale studies looking at tight control in both type 1 and type 2 diabetes, low blood sugars occurred more often in the patients who were managed most intensively. This is important for patients and physicians to recognize, especially as the goal for treating patients with diabetes becomes tighter control of blood sugar.

      While people who do not have any metabolic problems can complain of symptoms that resemble low blood sugar, true hypoglycemia usually occurs in people with diabetes mellitus . People with pre-diabetes or insulin resistance also can have low blood sugars on occasion if their high circulating insulin levels are further challenged by a prolonged period of fasting. There are other rare causes for the condition, such as insulin-producing tumors and certain medications.

      These uncommon causes of hypoglycemia will not be discussed in this article, which will primarily focus on the condition occurring with type 1 or 2 diabetes and its treatment.

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      Signs Of Low Blood Sugar At Night

      If your blood sugar drops while you are sleeping, your partner or other family members may notice that you are sweating and behaving differently. Signs of low blood sugar at night include:


      • Restlessness.
      • Attempting to get out of bed or accidentally rolling out of bed.
      • Sleepwalking.
      • Nightmares.
      • Sweating.

      You may wake up with a headache in the morning if your blood sugar was low during the night.

      What Should My Blood Sugar Levels Be

      Low Blood Sugar

      Your blood sugar level changes depending on what you’ve eaten, whether you’ve exercised and other factors but we have some general guidelines to determine what levels are healthy.

      For generally healthy individuals who haven’t eaten for eight hours or more, a normal blood sugar level is between 70-99 mg/dL. When you’ve eaten in the past two hours, it should be no higher than 140 mg/dL. To refresh your chemistry knowledge, that unit is milligrams per deciliter and it’s measuring the amount of glucose present in your blood.

      Only a medical professional can diagnose diabetes or another issue with your blood sugar, so if you’re concerned about your blood sugar levels, check with a doctor.

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      Be Ready To Treat Low Blood Sugar

      Mild low blood sugar can be treated with fruit juice, glucose tablets, and hard candies. If youre prone to low blood sugar or take insulin, keep these things on hand at home, in your car, at work, and while out exercising.

      More severe low blood sugar is treated with a glucagon injection. Glucagon is a hormone that helps raise your blood sugar. You need a prescription for glucagon, which is an injectable medication.

      What Is Low Blood Glucose

      Low blood glucose, also called low blood sugar or hypoglycemia, occurs when the level of glucose in your blood drops below what is healthy for you. For many people with diabetes, this means a blood glucose reading lower than 70 milligrams per deciliter .1 Your number might be different, so check with your doctor or health care team to find out what blood glucose level is low for you.

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      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.

      What Can Cause Low Blood Sugar Levels

      3 Ways To Treat Low Blood Sugar | She’s Diabetic

      Some things that can make low blood sugar levels more likely are:

      • skipping meals and snacks
      • not eating enough food during a meal or snack
      • exercising longer or harder than usual without eating some extra food
      • getting too much insulin
      • not timing the insulin doses properly with meals, snacks, and exercise

      Also, some things may increase how quickly insulin gets absorbed into the bloodstream and can make hypoglycemia more likely. These include:

      • taking a hot shower or bath right after having an insulin injection increases blood flow through the blood vessels in the skin, which can make the insulin be absorbed more quickly than usual
      • injecting the shot into a muscle instead of the fatty layer under the skin
      • injecting the insulin into a part of the body used a lot in a particular sport .

      All of these situations increase the chances that a person may get hypoglycemia.

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      What Drinks And Foods Raise Blood Sugar Fast

      • 4 teaspoons of sugar
      • 1/2 can of regular soda or juice

      Many people like the idea of treating low blood sugar with dietary treats such as cake, cookies, and brownies. However, sugar in the form of complex carbohydrates or sugar combined with fat and protein are much too slowly absorbed to be useful in acute treatment.

      Once the acute episode has been treated, a healthy, long-acting carbohydrate to maintain blood sugars in the appropriate range should be consumed. Half a sandwich is a reasonable option.

      If the hypoglycemic episode has progressed to the point at which the patient cannot or will not take anything by mouth, more drastic measures will be needed. In many cases, a family member or roommate can be trained in the use of glucagon. Glucagon is a hormone that causes a rapid release of glucose stores from the liver. It is an injection given intramuscularly to an individual who cannot take glucose by mouth. A response is usually seen in minutes and lasts for about 90 minutes. Again, a long-acting source of glucose should thereafter be consumed to maintain blood sugar levels in the safe range. If glucagon is not available and the patient is not able to take anything by mouth, emergency services should be called immediately. An intravenous route of glucose administration should be established as soon as possible.

      What Should You Do In An Emergency

      If mild or moderate hypoglycemia isn’t treated right away, it can turn into severe hypoglycemia. People with severe hypoglycemia usually pass out. If you pass out, someone should 911 right away.

      If you have a health problem that tends to cause low blood sugar, it’s a good idea to teach your family, friends, and coworkers about what symptoms to watch for and what to do. You may also want to wear a medical alert bracelet or necklace.

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      A Few Final Notes On Keeping Blood Sugar Stable

      Taking an active, intentional approach to your blood sugar levels is crucial to your quality of life and overall health, ONeill says. Avoiding too-high or too-low blood sugar levels will help you avoid adverse symptoms and health complications, and staying within your target range can enable you to feel your best and do whatever you want to do in life, she says.

      Test your blood sugar regularly, listen to your body, and dont ever hesitate to reach out to your doctor.

      Additional reporting by Karen Appold.

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