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What Causes Your Blood Sugar To Drop


What If The 15

Warning Signs That Shows Your Blood Sugar Level Is Dropping

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.

Preventing Low Blood Sugar

Preventing low blood sugar is better than having to treat it. Always have a source of fast-acting sugar with you.

  • When you exercise, check your blood sugar levels. Make sure you have snacks with you.
  • Talk to your provider about reducing insulin doses on days that you exercise.
  • Ask your provider if you need a bedtime snack to prevent low blood sugar overnight. Protein snacks may be best.

DO NOT drink alcohol without eating food. Women should limit alcohol to 1 drink a day and men should limit alcohol to 2 drinks a day. Family and friends should know how to help. They should know:

  • The symptoms of low blood sugar and how to tell if you have them.
  • How much and what kind of food they should give you.
  • When to call for emergency help.
  • How to inject glucagon, a hormone that increases your blood sugar. Your provider will tell you when to use this medicine.

If you have diabetes, always wear a medical alert bracelet or necklace. This helps emergency medical workers know you have diabetes.


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.


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Glycemia Load And Glycemic Index

Foods that have a high glycemic index, which means that they break down more rapidly into glucose after being eaten, raise blood sugar very quickly. Generally speaking, carbohydrate foods high in refined sugars or simple sugars have a high glycemic index. The sudden influx of glucose causes the release of large amounts of insulin, which removes too much glucose and causes blood glucose to drop. Eating foods with a low glycemic index helps avoid dropping blood sugar levels after eating. Glycemic load, which considers the amount of carbohydrates in a food along with its glycemic index, determines a food’s effect on your blood sugar.

Your Diabetes Devices And Hypoglycemia

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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.

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Understanding Your Blood Sugar

The best way to understand how your blood sugar changes day-to-day is to regularly use a blood glucose meter to check your blood sugar level. If youre newly diagnosed, its also helpful to keep a food journal in addition to a blood sugar log, as well as tracking any physical activity.

Your blood sugar patterns are unique to you. Over time youll have a better understanding of which foods raise your blood sugars the most, as well as how your blood sugar responds to different types of exercise.

Some people with diabetes choose to use a continuous glucose monitor to monitor their blood sugar trends.


A continuous glucose monitor is a device with a sensor worn under the skin which measures blood sugar levels every 5-15 minutes. This is useful for identifying trends in blood sugar levels and can help predict and identify hypoglycemia sooner.

Using a CGM can reduce the amount of finger prick glucose tests needed each day, which is an added benefit.

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ADA Guidelines on Alcohol & Blood Sugar

The American Diabetes Association does have guidelines regarding alcohol and blood sugar and how alcohol affects blood sugar. Some of their recommendations include:

  • The advice when it comes to alcohol and blood sugar is no more than one drink per day for women and two drinks per day for men.
  • If you have diabetes, you shouldnt drink when your blood sugar levels are low or you have an empty stomach.
  • People with diabetes shouldnt count the calories in an alcoholic drink as a carbohydrate choice in their meal plan.
  • Certain types of alcoholic beverages may be more detrimental for people with diabetes, including heavy craft beers.

The amount of carbs and sugar varies in every alcohol, so its important to pay attention to labels and serving sizes when considering safe alcohol and blood sugar practices.

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How Long Does Alcohol Affect Your Blood Sugar

Alcohol affects your blood sugar for as long as it is in your body. The effects of alcohol on your blood sugar will initially increase as the sugar from alcohol enters your blood, then peak once the maximum amount of sugar in the alcohol has been absorbed. This often occurs in about 12 hours.

Once your body has absorbed all the sugar it can from alcohol, it will start to use up the sugar, decreasing your blood sugar levels. As the liver inhibits the release of more sugar, your blood sugar levels will lower. This makes your blood sugar artificially low as long as the alcohol keeps impacting your livers normal function. Once enough alcohol has been eliminated, your liver will regain the ability to release sugar. This often takes about 12 hours.

What Are The Complications Of Low Blood Glucose

Hypoglycaemia – How to Treat and Prevent Low Blood Sugar

Mild-to-moderate low blood glucose can be easily treated. But severely low blood glucose can cause serious complications, including passing out, coma, or death.

Repeated episodes of low blood glucose can lead to

  • high blood glucose levels, if worry or fear of low blood glucose keeps you from taking the medicines you need to manage your diabetes8
  • hypoglycemia unawareness, a condition in which you dont notice any symptoms of low blood glucose until your blood glucose level has dropped very low

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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.

Preventing A Low Blood Sugar Level

If you have diabetes, you can reduce your chance of getting a low blood sugar level if you:

  • Check your blood sugar level regularly and be aware of the symptoms of a low blood sugar level so you can treat it quickly.
  • Always carry a sugary snack or drink with you, such as glucose tablets, a carton of fruit juice or some sweets. If you have a glucagon injection kit, always keep it with you.
  • Do not skip meals.
  • Be careful when drinking alcohol. Do not drink large amounts, check your blood sugar level regularly, and eat a carbohydrate snack afterwards.
  • Be careful when exercising eating a carbohydrate snack before exercise can help to reduce the risk of a hypo. If you take some types of diabetes medicine, your doctor may recommend you take a lower dose before or after doing intense exercise.
  • Have a carbohydrate snack, such as toast, if your blood sugar level drops too low while you’re asleep

If you keep getting a low blood sugar level, talk to your diabetes care team about things you can do to help prevent it.

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Prevention Of Low Blood Sugar

Do not skip or delay meals. If your diet plan includes snacks, make sure to take these.


Measure insulin dosage carefully and inject it properly. If you cannot see well, a family member or a visiting nurse can prepare your insulin injections for you.

Take only the prescribed amount of insulin or oral medication for diabetes that your doctor has ordered.

Keep exercise consistent from day to day. Eat a snack or reduce your insulin prior to unusual exercise.

If you are taking insulin, notify your doctor if you have low blood sugars four or more times per week or if you have a severe low blood sugar. Severe low blood sugars are those less than 40 mg., those requiring help from another person, or those which cause you to have a convulsion or become unconscious.

If you are taking oral medication for your diabetes notify your doctor or nurse if blood sugars are running less than 80 mg. or if you have a severe low blood sugar.


If A Person Is Unconscious

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If a person loses consciousness because of severe hypoglycaemia, they need to be put into the recovery position and given an injection of the hormone glucagon . The injection will raise their blood glucose level.

The injection should be carried out by a friend or family member who knows what theyre doing, or by a trained healthcare professional.

You should dial 999 to request an ambulance if:

  • a glucagon injection kit isnt available
  • theres nobody available whos trained to give the injection
  • the injection is ineffective after 10 minutes

Never try to put food or drink into the mouth of someone whos unconscious as they could choke.

If youre able to give a glucagon injection and the person regains consciousness, they should eat some longer-acting carbohydrate food, such as a few biscuits, a cereal bar or a sandwich.


You should continue to monitor the person for signs of recurring symptoms in case they need to be treated again.

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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.


Tips To Prevent Blood Sugar From Dropping At Night

Hypoglycemia, also known as low blood sugar or low blood glucose, occurs when blood glucose levels drop below normalwhich is typically below a level of 70 milligrams per deciliter . With levels more commonly dipping at nighttime, otherwise referred to as nighttime hypoglycemia, this condition affects mostly patients with diabetes.

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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.

Overdose Of Diabetes Medication

Nighttime Hypoglycemia â Low Blood Sugar & Insulin resistance â Dr.Berg

A common cause of hypoglycaemia is taking too much insulin for your current needs. Insulin is a medication that helps control your blood glucose levels. Its commonly used to treat type 1 diabetes and is also recommended for some people with type 2 diabetes.


A fall in blood glucose levels can also occur after taking too much oral hypoglycaemia medication, such as sulphonylurea, which causes a release of insulin. This medication is often used to lower blood glucose levels in people with type 2 diabetes.

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Faq: What Causes Blood Sugar To Drop Rapidly

Blood sugar levels rise and fall as the body does its business. Insulin is responsible for lowering blood sugar. This is the basic and common answer as to what causes blood sugar to drop rapidly: insulin.

Of course, this basic answer doesnt explain why blood sugar levels might drop more quickly than normal, or what else influences the body in its glycemic descent.

Lets take a closer look!


Avoid Blood Sugar Dropping Rapidly

Keep testing, testing, testing . To be aware of the state of your blood sugar levels, its necessary to check what your blood sugar levels are. Only then can you take steps to stop low blood sugar.

And those variable factors that play a role in hypoglycemia can be tracked with the assistance of Hedia and its diabetes tracker.

Perhaps most importantly in this case, Hedia has an idea of the active insulin in your body. This makes all subsequent calculations for avoiding hypoglycemia more accurate.

The reason for low blood sugar insulin may be basic, but controlling it often is not. Let Hedia take care of that by downloading the app from or the App Store!

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What About The Glycemic Index

Your daily carb total, spread steadily across the day, is one key to good blood sugar control. Some people also use the glycemic index , a rating of how individual foods raise blood sugar levels. Beans and whole-grain breads and cereals have a lower GI than white bread and regular pasta. Juice has a higher GI than whole fruit. Craving a high-GI food? Eat it along with a lower-GI choice to help control your levels.

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What To Do When Your Blood Sugar Levels Drop Too Low

DIY steps to check blood sugar level

People who use insulin and other diabetes medications are at risk for hypoglycemia. Keep this action plan handy so you’re prepared.

If you take insulin or diabetes medication, you may be at risk of developing hypoglycemia, or low blood sugar. Without quick attention, hypoglycemia can lead to serious complications, so its important to know what to do if it happens to you or someone close to you.

In very severe cases, hypoglycemia can lead to seizures or loss of consciousness, says a clinical assistant professor of medicine, endocrinology, gerontology, and metabolism at Stanford Health Care, and chief of the Stanford Endocrine Clinic.

It’s possible to have hypoglycemia but have no symptoms, according to the National Institute of Diabetes and Digestive and Kidney Diseases . On the other hand, symptoms can also come on rapidly. While symptoms vary from person to person, if you develop mild to moderate low blood sugar you may:

  • Feel shaky or jittery
  • Have a headache or be lightheaded
  • Turn pale
  • Be irritable or combative
  • Have blurred vision or see double

Some people feel tingling or numbness in their extremities too, says Rodolfo Galindo, MD, an assistant professor of medicine in the division of endocrinology, metabolism, and lipids at the Emory University School of Medicine in Atlanta, and chair of the inpatient diabetes taskforce.

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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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