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.
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.
Low Blood Glucose During Sleep
Your blood glucose level can drop while you sleep and stay low for several hours, causing serious problems.7 Symptoms of low blood glucose while you sleep can include
- crying out or having nightmares
- sweating enough to make your pajamas or sheets damp
- feeling tired, irritable, or confused after waking up
Although you may not wake up or notice any symptoms, low blood glucose can interfere with your sleep, which may affect your quality of life, mood, and ability to work. Having low blood glucose during sleep can also make you less likely to notice and respond to symptoms of low blood glucose during the day.
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Hypoglycemia In Dogs: Why It Happens And How To Treat It
Hypoglycemia in dogs, also known as low blood sugar, can be a serious medical condition. If left untreated, it can be fatal if the blood sugar drops too low. It’s important for pet owners to know the symptoms and how to recognize when an episode begins. Here are some basics of what hypoglycemia is, why it happens, and how you can prevent and treat it.
How To Lower Blood Sugar Immediately

Michael Menna, DO, is a board-certified, active attending emergency medicine physician at White Plains Hospital in White Plains, New York.
If you have high blood sugar, a condition also known as hyperglycemia, theres too much sugar in your blood and not enough insulin in your body to lower it. In people with diabetes, hyperglycemia can be caused by things like eating too many carbohydrates, lack of physical activity, stress from an illness or infection, nondiabetes medications , or skipping or not taking enough glucose-lowering medication.
Hyperglycemia requires immediate treatment to prevent serious complications, including nerve, tissue, and organ damage diabetic ketoacidosis and hyperglycemic hyperosmolar syndrome . While taking rapid-acting insulin is the quickest way to lower your blood sugar, there are other ways like exercising and staying hydrated that can help. In cases of an emergency, contact your healthcare provider immediately.
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When Blood Sugar Is Too Low
Glucose is a sugar that comes from the foods we eat, and it’s also formed and stored inside the body. It’s the main source of energy for the cells of our body, and is carried to each cell through the bloodstream. Our brains depend on glucose to function, even when we’re sleeping.
The is the amount of glucose in the blood. When these levels drop too low, it’s called hypoglycemia . Very low blood sugar levels can cause serious symptoms that need to be treated right away.
Whats Considered Low Blood Sugar Level
Your blood sugar tends to change throughout the day. Itll be more economical when you initial wake up, particularly if you have not eaten for the past 8 to 10 hours. Your blood glucose will go up once you eat. Depending upon when you last ate, heres whats considered to be a normal blood glucose range:
Fasting2 hours after a meal
70 99 mg/dLLess than 140 mg/dL
Low blood sugar, likewise called hypoglycemia, is when your blood sugar level levels fall below 70 mg/dL. The point at which low blood glucose symptoms become visible is different from one person to the next. Some individuals might feel tense, irritable, or lightheaded when their blood glucose level is up to 70 mg/dL. Other individuals may not feel any symptoms until well listed below that mark.
A fast, easy blood test can determine your blood sugar level. If you have diabetes or different medical condition that seldom causes incidents of low blood sugar, its essential to routinely examine your blood sugar with a home test.
If a analysis exhibits that your blood sugar is below standard, you can take steps to change it quickly.
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What Is Diabetic Ketoacidosis
If you think you may have low blood sugar, check it even if you dont have symptoms.
When too many ketones are produced too fast, they can build up in your body and cause diabetic ketoacidosis, or DKA. DKA is very serious and can cause a coma or even death. Common symptoms of DKA include:
- Fast, deep breathing.
- Nausea and vomiting.
- Stomach pain.
If you think you may have DKA, test your urine for ketones. Follow the test kit directions, checking the color of the test strip against the color chart in the kit to see your ketone level. If your ketones are high, . DKA requires treatment in a hospital.
DKA happens most in people with type 1 diabetes and is sometimes the first sign of type 1 in people who havent yet been diagnosed. People with type 2 diabetes can also develop DKA, but its less common.
Signs & Symptoms Of Low Blood Sugar
Keeping blood glucose levels in a healthy range can be challenging.
When the amount of sugar in your blood has dropped below your target range , it is called low blood sugar .
If your blood sugar has dropped, you may feel:
- shaky, light-headed, nauseated
- an increase in heart rate
- sweaty, headachy
- weak, drowsy
- numbness or tingling on your tongue or lips
Symptoms of very low blood sugar are more severe and can make you:
- confused and disoriented
- lose consciousness
- have a seizure
Make sure you always wear your MedicAlert® identification and talk to your doctor or diabetes educator about prevention and emergency treatment for severe low blood sugar.
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Why Am I Having Lows
If you are experiencing low blood sugar and youre not sure why, bring a record of blood sugar, insulin, exercise and food data to a health care provider. Together, you can review all your data to figure out the cause of the lows.
The more information you can give your health care provider, the better they can work with you to understand what’s causing the lows. Your provider may be able to help prevent low blood sugar by adjusting the timing of insulin dosing, exercise and meals or snacks. Changing insulin doses or the types of food you eat may also do the trick.
Does Everyone Have Symptoms From Hypoglycemia
Some people dont have symptoms or dont notice them. Healthcare providers call that situation hypoglycemia unawareness. People with such a challenge arent aware when they need to do something about their blood sugar. Theyre then more likely to have severe episodes and need medical help. People with hypoglycemia unawareness should check their blood sugar more often.
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What To Do If You Have Low Blood Sugar Symptoms
If you have diabetes and are experiencing mild to moderate hypoglycemia symptoms, you need to immediately eat or drink 15 grams of easily digestible carbohydrates.
Very low blood sugar is a medical emergency. If you or someone else with diabetes is experiencing severe symptoms, such as unconsciousness, its important to administer a medication called glucagon and contact emergency services immediately.
If youre at risk for low blood sugar, its important to talk with your doctor about getting a prescription for glucagon.
You should never give an unconscious person anything by mouth, as it could cause them to choke. If you have diabetes, make sure your family and friends know not to do this if you lose consciousness.
Low blood sugar can occur for a number of reasons. Its usually a side effect of diabetes treatment.
What Causes Low Blood Sugar

Low blood sugar has many causes, including missing a meal, taking too much insulin, taking other diabetes medicines, exercising more than normal, and drinking alcohol. Blood sugar below 70 mg/dL is considered low.
Signs of low blood sugar are different for everyone. Common symptoms include:
- Shaking.
- Dizziness.
- Hunger.
Know what your individual symptoms are so you can catch low blood sugar early and treat it. If you think you may have low blood sugar, check it even if you dont have symptoms. Low blood sugar can be dangerous and should be treated as soon as possible.
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How To Test Your Blood Sugar At Home
To perform a blood sugar test, you will need to prick your finger with a lancet . Youll put a small sample of blood from this onto a strip inserted into the blood glucose meter.
Before you test your blood sugar at home, its important to find out from your doctor what a healthy blood sugar range is for you. Your doctor will determine this range based on factors such as:
- the type of diabetes you have
- how long youve had diabetes
- your age
- whether you have any other chronic health conditions
If you dont have a blood sugar testing machine on hand and are experiencing signs or symptoms of low blood sugar with diabetes, your symptoms may be enough to diagnose low blood sugar.
What Can You Do To Raise Your Blood Sugar Quickly
This post will explain What to eat when blood sugar is low. The energy you need to work, play, and even simply think directly originates from blood sugar level, or blood glucose. It flows throughout your body all the time.
Blood glucose originates from the foods you eat. A hormone called insulin assists move the sugar from your blood stream into cells in your body, where its utilized for energy. But if your blood glucose levels drop too low, you can experience a wide variety of signs, some of which can be severe. If youre vulnerable to dips in your blood sugar levels, understanding what to do can help keep you safe. In this short article, well take a more detailed look at the types of foods that can quickly raise your blood sugar, along with other actions you can take to keep your blood sugar at a healthy level.
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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.
Treating Low Blood Glucose If You Take Medicines That Slow Down Digestion
Some diabetes medicines slow down the digestion of carbohydrates to keep blood glucose levels from rising too high after you eat. If you develop low blood glucose while taking these medicines, you will need to take glucose tablets or glucose gel right away. Eating or drinking other sources of carbohydrates wont raise your blood glucose level quickly enough.
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What Foods Can Help Raise Blood Sugar Fast
Because your blood sugar comes from the foods and beverages you consume, one of the easiest ways to raise your blood sugar fast is to grab a quick snack.
The American Diabetes Association recommends the 15-15 rule if your blood sugar dips below 70 mg/dL: Eat at least 15 grams of carbohydrates, then wait 15 minutes to recheck your blood sugar.
If youre still below 70 mg/dL, have another 15 grams of carbs, wait 15 minutes, and check your levels again.
Among the foods you can try for a quick blood sugar boost are:
- a piece of fruit, like a banana, apple, or orange
- 2 tablespoons of raisins
- 4 Starbursts
- 1 tablespoon of sugar in water
Foods that contain protein or fat, such as peanut butter, ice cream, and chocolate, may be helpful if your blood sugar level has dropped but isnt below 70 mg/dL.
These higher-fat foods, as well as whole-grain bread and other high-fiber foods, take longer to absorb into your bloodstream. Because of this, these foods wont raise your blood sugar as quickly as foods that have more simple carbohydrates.
When To Contact Your Healthcare Provider
Hyperglycemia can turn into a medical emergency like DKA and HHS that requires immediate intervention by your practitioner or a local emergency department. If you have two blood sugar readings of 300 mg/dL or more, or have blood sugar above your target range for more than a week, seek immediate medical help.
Signs of hyperglycemia include:
- Ketones in your urine
- Stomach pain, nausea, or vomiting
- Shortness of breath
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Hypoglycemia Tests And Diagnosis
To diagnose nondiabetic hypoglycemia, your doctor will do a physical exam and ask questions about any medicines you take. Theyâll want to know all about your health and any history of diseases or stomach surgery.
Theyâll check your blood glucose level, especially when you are having symptoms. Theyâll also check to see if you feel better when your sugar goes back to a normal level.
If your doctor suspects hypoglycemia, you may have to fast until you start to have symptoms. Theyâll test your blood glucose level at different times throughout the fast.
To check for reactive hypoglycemia, you may have to take a test called a mixed-meal tolerance test . For this, you take a special drink that raises your blood glucose. The doctor will check your blood glucose levels over the next few hours.
What If The 15

If you dont feel better after three tries, or if your symptoms get worse, call your healthcare provider or 911. Healthcare providers can use a medication called glucagon. They inject it with a needle or squirt it up your nose. Glucagon is also available for home use. Your healthcare provider can prescribe it and teach a family member or friend how to use it in the event of severe hypoglycemia.
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Causes Of Low Blood Sugar
There are many reasons why you may have low blood sugar, including:
- Taking too much insulin.
- Not eating enough carbs for how much insulin you take.
- Timing of when you take your insulin.
- The amount and timing of physical activity.
- Drinking alcohol.
- How much fat, protein, and fiber are in your meal.
- Hot and humid weather.
- Unexpected changes in your schedule.
- Spending time at a high altitude.
- Going through puberty.
- Menstruation.
Symptoms Of A Low Blood Sugar Level
A low blood sugar level can affect everyone differently. You’ll learn how it makes you feel, although your symptoms may change over time.
Early signs of a low blood sugar level include:
- sweating
- a fast or pounding heartbeat
- becoming easily irritated, tearful, anxious or moody
- turning pale
If a low blood sugar level is not treated, you may get other symptoms, such as:
- weakness
- unusual behaviour, slurred speech or clumsiness
- feeling sleepy
- seizures or fits
- collapsing or passing out
A low blood sugar level, or hypo, can also happen while you’re sleeping. This may cause you to wake up during the night or cause headaches, tiredness or damp sheets in the morning.
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Best Bites To Boost Low Blood Sugar
Also known as hypoglycemia, low blood sugar is a diabetes complication that needs to be treated quickly. Here’s what to munch on if your blood sugar dips whether you’re at home or on the go.
Picture this: You’re in the mall, shopping with friends, chatting and having a great time when suddenly you start to feel a bit strange. You might become irritated or nervous, your skin may feel clammy or sweaty and your vision may even seem blurred. If you have diabetes, you’ll recognize these as the warning signs of hypoglycemia, or low blood sugar.
Hypoglycemia occurs when blood sugar levels in the body drop too low, says Kelly O’Connor, RD, a dietitian and certified diabetes educator at LifeBridge Health’s Northwest Hospital in Baltimore. Glucose is your brains main energy or fuel source. If the level of glucose in the body is too low, it can begin to affect your brains functioning. The resulting symptoms are more or less your bodys warning system that you need to take quick action in order to correct the problem.