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How To Tell If You Have Low Blood Sugar


How Do You Treat Hypoglycemia

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

Low blood sugar levels happen when theres too little glucose left in the bloodstream to continue supplying fuel to your organs, muscles, and tissues. It most often occurs when you dont eat enough food, especially carb-containing foods, given your blood-sugar-lowering medications and physical activity levels, ONeill says. Levels can decrease gradually or suddenly.

When the amount of glucose in the bloodstream drops to too-low levels, the body reacts by releasing epinephrine, also called adrenaline or the fight or flight hormone. Epinephrine revs your heart rate and can cause sweating, shaking, anxiety, and irritability. If not enough glucose is able to reach the brain, the result may be difficulty concentrating, confused thinking, and slurred speech. In extreme cases, a lack of glucose within the brain can lead to seizures, coma, and even death, she says.

People with low glucose levels can use the ADAs 15-15 Rule, which advises people consume 15 g of carbs, wait 15 minutes, and check their levels again. If the number is still low, repeat until reaching at least 70 mg/dL.

You can find 15 g of carbs in:


  • 1 slice of bread
  • 1 small piece of fresh fruit
  • cup of yogurt
  • Three to four hard candies
  • Glucose tablets as indicated on the label
  • Glucose gel as indicated on the label

Once your glucose levels are back to normal, the ADA suggests going ahead and eating your next scheduled meal or snack, which will help prevent levels from dropping again.

What Are Clinical Trials For Low Blood Glucose

Clinical trialsand other types of clinical studiesare part of medical research and involve people like you. When you volunteer to take part in a clinical study, you help doctors and researchers learn more about disease and improve health care for people in the future.

Researchers are studying many aspects of low blood glucose levels in diabetes, such as

  • how to diagnose and treat low blood glucose among people with diabetes
  • medicines that can treat symptoms of low blood glucose in people with hypoglycemia unawareness
  • educational approaches to reduce fear of low blood glucose, which can make it harder for you to control your diabetes

How Can I Prevent Hypoglycemia

You may need to change what and when you eat to prevent low blood sugar levels. Follow the meal plan that you and the dietitian have planned. The following guidelines may help you keep your blood sugar levels under control.

  • Eat 5 to 6 small meals each day instead of 3 large meals. Eat the same amount of carbohydrate at meals and snacks each day. Most people need about 3 to 4 servings of carbohydrate at meals and 1 to 2 servings for snacks. Do not skip meals. Carbohydrate counting can be used plan your meals. Ask your healthcare provider or dietitian for information about carbohydrate counting.
  • Limit refined carbohydrates. Examples are white bread, pastries , regular sodas, syrups, and candy.
  • Do not have drinks or foods that contain caffeine. Examples are coffee, tea, and certain types of sodas. Caffeine may cause you to have the same symptoms as hypoglycemia, and may cause you to feel worse.
  • Limit or do not drink alcohol. Women should limit alcohol to 1 drink a day. Men should limit alcohol to 2 drinks a day. A drink of alcohol is 12 ounces of beer, 5 ounces of wine, or 1½ ounces of liquor. Do not drink alcohol on an empty stomach. Drink alcohol with meals to avoid hypoglycemia.
  • Include protein foods and vegetables in your meals. Some foods that are high in protein include beef, pork, fish, poultry , beans, and nuts. Eat a variety of vegetables with your meals.

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Your Diabetes Devices And Hypoglycemia

Several insulin pumps are now available that make managing blood sugar levels easier, particularly when connected to a glucose meter or a CGM.

Some of the most important advantages of CGM devices are the improved insulin control and the ability to detect trends and lows early. With improved technology, it is now possible for parents to track blood sugar trends in their kids even when they are hundreds of miles apart .

In addition, automated insulin delivery systems, also known an artificial pancreas or a hybrid closed-loop system, will automatically adjust insulin to match your bodys need to help you spend more time in your target range.

Resources that provide people with T1D and their families with more detailed information about pumps and CGM devices are available through JDRF here. For people looking for a deeper understanding of technology that helps people with T1D better manage their blood sugar, JDRF resources are available here.

The Effects Of Low Blood Sugar On Your Body

What is dangerous in low blood sugar: Do you knowValue Food

Every cell in your body needs energy to function. The main source of energy might come as a surprise: Its sugar, also known as glucose. Blood sugar is essential to proper brain, heart, and digestive function. It even helps keep your skin and vision healthy.


When your blood sugar levels fall below the normal range, its called hypoglycemia. There are many identifiable symptoms of low blood sugar, but the only way to know if you have low blood sugar is by taking a blood glucose test.

Learn more about the symptoms of low blood sugar, as well as the long-term effects on the body.

most common reasons for low blood sugar are some medications used to treat diabetes, such as insulin.

In type 1 diabetes, the pancreas can no longer produce insulin. In type 2 diabetes, the pancreas doesnt make enough insulin, or your body cant use it properly. Too much insulin or oral diabetic medication can lower the blood sugar level, leading to hypoglycemia.

However, contrary to popular belief, low blood sugar isnt exclusive to diabetes, though it is rare. It can also happen if your body makes more insulin than it should.


Another possible cause of low blood sugar is drinking too much alcohol, especially over long periods of time. This can interfere with the livers ability to create a buildup of glucose and then release it into your bloodstream when you need it.

Other causes include:

Also Check: Hyperglycemic Diet Plan

What Causes Hypoglycemia

Hypoglycemia can happen for different reasons. Anyone with diabetes can get low blood sugar, even people who follow their care plan carefully. Sugar levels can drop if your child:

  • skips or delays meals or snacks or doesn’t eat as much carbohydrate-containing food as expected when taking their diabetes medicine. This happens often in kids who develop an illness that causes loss of appetite, nausea, or vomiting.
  • takes too much insulin, takes the wrong type of insulin, or takes insulin at the wrong time
  • exercises more than usual without eating extra snacks or adjusting the dosage of diabetes medicines

About High Blood Sugar

High glucose levels occur when the body doesn’t have enough insulin or can’t properly use the insulin it has to shuttle glucose from the bloodstream to the bodys muscles, organs, and tissues for fuel, ONeill says. As a result, the amount of sugar in the blood builds up.


Hyperglycemia typically happens when you consume more carbohydrates or bigger portions of food than usual if you don’t take enough insulin or other diabetes medication as prescribed and if you decrease your levels of physical activity, she says. Heightened stress levels can also increase blood sugar levels. Non-diabetes-related medications that are known to raise blood sugar levels include steroids, beta-blockers, birth control pills, and many mental health medications, she explains.

Signs of high blood sugar include frequent urination, fatigue, dry or itchy skin, feeling thirsty, more frequent infections, and eating more food but not gaining as much weight as usual, says Athena Philis-Tsimikas, MD, the corporate vice president for the Scripps Whittier Diabetes Institute in La Jolla, California.

High blood sugar levels can cause these symptoms through various mechanisms, according to the Mayo Clinic. For example, high blood sugar levels damage blood vessels and nerves throughout the body. They can also deprive organs of energy and can cause fluid to accumulate in the eyes. And in an attempt to get your blood sugar to a healthier level, your body will often increase urine output.

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What Is Low Blood Sugar

You may have briefly felt the effects of low blood sugar when you’ve gotten really hungry or exercised hard without eating enough. This happens to nearly everyone from time to time. It’s easy to correct and usually nothing to worry about.


But low blood sugar, or hypoglycemia, can also be an ongoing problem. It occurs when the level of sugar in your blood drops too low to give your body energy.

How Can I Be Better Prepared For Hypoglycemia

What Is a Low Blood Sugar and What Can You Do About It

You can take some steps to be ready for hypoglycemia:

  • Be aware of the symptoms and treat them early.
  • Carry some fast-acting carbs with you all the time.
  • Check your glucose levels frequently, especially around meals and exercise.
  • Inform family, friends and co-workers so they know what do if you need help.
  • Talk to your healthcare provider regularly to make and update your plan.
  • Wear a medical bracelet that lets people know you have diabetes. Carry a card in your purse or wallet with instructions for hypoglycemia.

A note from Cleveland Clinic

Hypoglycemia is quite common in people with diabetes. If not treated, it can cause troubling symptoms, and even serious health problems. Fortunately, you can avoid hypoglycemic episodes by monitoring your blood sugar. You can also make small adjustments to eating and exercising routines.

Also Check: Which Factors Will Cause Hypoglycemia In A Client With Diabetes Select All That Apply.


What Can Cause Low Blood Sugar Levels

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 Is Hypoglycemia

Hypoglycemia is a condition caused by low blood glucose levels. Glucose is the main way your body gets energy. The condition is most common in people with diabetes who have issues with medicine, food, or exercise. But sometimes people who don’t have diabetes can also get low blood glucose. There are two kinds of nondiabetic hypoglycemia:

  • Reactive hypoglycemia, which happens a few hours after you eat a meal
  • Fasting hypoglycemia, which might be linked to medicine or a disease

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What Is Blood Sugar

Blood sugar, or glucose, is your body’s main energy source. We get glucose from the food we eat, and our blood carries it around to all the cells in the body to give them energy to function. Glucose mainly comes from the carbohydrates we eat, though our bodies can convert protein and fat into sugar too if needed.

Glucose from protein is typically stored in the liver and doesn’t enter the bloodstream, so eating protein-rich foods won’t raise your blood sugar too much. Fats slow down the digestion of carbohydrates, which causes a delayed rise in blood sugar. High blood sugar can be an issue because it usually leads to sugar crashes, which are no fun — symptoms include fatigue, headaches and the jitters. So, eat meals balanced with protein, fat and carbs to avoid this.

Blood sugar is closely related to insulin, a hormone secreted by the pancreas that helps your body use glucose that’s in the carbohydrates you eat. Insulin helps regulate your blood sugar levels — if you eat more sugar than you need in the moment, the hormone helps store the glucose in your liver until it’s needed for energy.

You probably also know about blood sugar in the context of diabetes. Type 1 diabetes is a condition in which people are unable to make insulin, so they need to inject the hormone in order to keep their blood sugar levels stable. People with Type 2 diabetes, which usually occurs later in life, either don’t secrete insulin or are resistant to it.

How Do I Treat An Episode Of Hypoglycemia

The Effects of Low Blood Sugar on Your Body

The American Diabetes Association recommends the 15-15 rule for an episode of hypoglycemia:


  • Eat or drink 15 grams of carbs to raise your blood sugar.
  • After 15 minutes, check your blood sugar.
  • If its still below 70 mg/dL, have another 15 grams of carbs.
  • Repeat until your blood sugar is at least 70 mg/dL.

If you have symptoms of hypoglycemia but cant test your blood sugar, use the 15-15 rule until you feel better.

Note: Children need fewer grams of carbs. Check with your healthcare provider.

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Treating Low Blood Sugar

You are at risk of having a low blood sugar reaction if you:

  • Skip or delay a meal or snack
  • Take too much insulin or eat too few carbohydrates
  • Exercise
  • Drink alcohol, especially without eating carbohydrates

Check your blood sugar if you have any of these symptoms:


  • Weakness and/or fatigue

If your blood sugar is less than 70 milligrams per deciliter :

  • Eat 15 to 30 grams of carbohydrate
  • Wait 15 minutes and then recheck your blood sugar
  • If your blood sugar is still less than 100 mg/dl, take another 15 grams of carbohydrate and retest your blood sugar in another 15 minutes. Repeat if necessary.

Important: If you have frequent low blood sugars speak to your doctor. You may need changes in your medication and/or meal plan.

Possible Causes With Diabetes

Diabetes affects your bodys ability to use insulin. Think of insulin as the key that unlocks your cells, letting in glucose for energy.

If you have diabetes, a variety of treatments can help the cells in your body use the glucose in your blood. Among these are insulin injections and oral medications that increase insulin production.

If you take too much of these types of medications, your blood sugar may drop too low. You may also sometimes experience low blood sugar if you plan to eat a big meal but then do not eat enough.


Skipping meals, eating less than usual, or eating later than usual but taking your medication at your usual time can also lead to low blood sugar levels.

Unplanned excess physical activity without eating enough can also cause a drop in blood sugar levels.

Drinking alcohol when youre on these medications can also lead to low blood sugar, especially if it replaces food. When your body is trying to get rid of alcohol, it becomes worse at managing blood sugar levels.

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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.

Digestive Endocrine And Circulatory Systems

What It Feels Like to Have a Low Blood Sugar

After you eat, your digestive system breaks down carbohydrates and turns them into glucose. Essentially, glucose is your bodys fuel source.

As your sugar levels rise, your pancreas releases a hormone called insulin, which helps glucose get taken up and used by cells throughout your body. If you have insulin-dependent diabetes, you must take the right about of insulin to get the job done.

Any excess glucose goes to your liver for storage.

When you go a few hours without eating, blood sugar levels go down. If you have a healthy pancreas, it releases a hormone called glucagon to make up for the absence of food. This hormone tells your liver to process the stored sugars and release them into your bloodstream.

If everything works as it should, your blood sugar levels should remain in the normal range until your next meal.

Insufficient blood sugar levels can cause a rapid heartbeat and heart palpitations. However, even if you have diabetes, you may not always have obvious symptoms of low blood sugar. This is a potentially dangerous condition called hypoglycemia unawareness. It happens when you experience low blood sugar so often that it changes your bodys response to it.

Normally, low blood sugar causes your body to release stress hormones, such as epinephrine. Epinephrine is responsible for those early warning signs, like hunger and shakiness.

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Listen To Your Doctor

If you follow a meal plan or take medications that increase insulin to manage low blood sugar, its important to stick to the plan your doctor prescribed to help prevent drops in your blood sugar level.

Not eating the right foods or taking the right medications at the correct times can cause your blood sugar to drop. Check in often with your doctor so they can adjust your treatment plan if and when necessary.

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