What Is Low Fasting Blood Sugar

Drink Water And Stay Hydrated

Drinking enough water could help you keep your blood sugar levels within healthy ranges.

In addition to preventing dehydration, it helps your kidneys flush out any excess sugar through urine.

One review of observational studies showed that those who drank more water had a lower risk of developing high blood sugar levels (

34 ).

You can do so at home using a portable blood glucose meter, which is known as a glucometer. You can discuss this option with your doctor.

Keeping track allows you to determine whether you need to adjust your meals or medications. It also helps you learn how your body reacts to certain foods .

Try measuring your levels regularly every day and keeping track of the numbers in a log. Also, it may be more helpful to track your blood sugar in pairs for example, before and after exercise or before and 2 hours after a meal.

This can show you whether you need to make small changes to a meal if it spikes your blood sugar, rather than avoiding your favorite meals altogether. Some adjustments include swapping a starchy side for non-starchy veggies or limiting them to a handful.

Summary

Checking your blood glucose and maintaining a daily log enables you to adjust foods and medications when necessary to better manage your blood sugar levels.

Blood Sugar Testing At Home

A person can test their blood sugar levels at home.

In most cases, doctors ask people to measure fasting blood sugar immediately upon waking and before they have anything to eat or drink. It may also be appropriate to test blood sugar before eating or 2 hours after a meal, which is when blood sugar returns to normal levels.

The right time to test depends on treatment goals and other factors. For example, most people with diabetes do not need to test between meals unless they are using a diabetes drug that can lower blood sugar. Other people may test between meals if they feel their sugar levels may be low.

Since people with type 1 diabetes do not make any insulin, they need to test their blood sugar levels several times a day so they can adjust their insulin doses.

A person will test blood sugar levels by:

• preparing the testing strip and glucose monitor to be ready for the blood sample
• using an alcohol swab to clean the testing area, which is usually the side of a fingertip
• lancing the testing area and bracing against a firm surface to help resist the impulse to pull away
• squeezing the testing area around the wound to maximize blood flow
• squeezing a drop of blood onto the test strip
• putting the strip into the monitor
• recording the time, blood sugar reading, and recent food intake in a log

When To See A Healthcare Provider

Getting professional medical advice from a healthcare provider like an endocrinologist is the best way to learn more about whether your blood sugar levels are where they should be. Not getting proper treatment for low or high blood sugar levels can be serious and lead to health complications, especially for those with diabetes. Diabetes complications include nerve damage, kidney disease, heart disease, or heart attacks.

If you see a healthcare provider about your blood sugar levels, be prepared to answer questions about risk factors like what you eat, how much you exercise, and about your family history. Some healthcare providers may want to take a blood sample to test your blood sugar levels. They may also order an A1C test, which is a blood test that measures blood sugar levels over several months. You may have to fast eight hours beforehand to get accurate test results, so its always a good idea to check before your appointment.

If your blood sugar level goes above 250 mg/dL, you should go to the ER for immediate medical attention, says Dr. Tarugu. Emergency rooms are equipped to handle high blood sugar levels and can administer treatments like insulin therapy and fluid or electrolyte replacement.

Don’t Miss: How Long To Wait After Eating To Check Blood Sugar

Low Fasting Glucose And Major Cardiovascular Adverse Events Coronary Heart Disease And Cardiovascular Mortality

In articles using fasting glucose < 4.6mmol/L as cut-off, the random effects summary estimate did not show increased risk of major adverse cardiovascular events , coronary heart disease or cardiovascular mortality .

In articles using fasting glucose < 4.0mmol/L as cut-off, the random effects summary estimate showed increased risks of major adverse cardiovascular events . Risks of coronary heart disease or cardiovascular mortality were not significantly increased .

Association of baseline low fasting glucose and risk of major adverse cardiovascular events, coronary heart disease and cardiovascular mortality.

Heterogeneity was difficult to assess for this pooled analysis involving three or fewer studies.

How Can I Prevent Low Blood Sugar

Your best bet is to practice good diabetes management and learn to detect hypoglycemia so you can treat it earlybefore it gets worse.

Monitoring blood sugar, with either a meter or a CGM, is the tried and true method for preventing hypoglycemia. Studies consistently show that the more a person checks blood sugar, the lower his or her risk of hypoglycemia. This is because you can see when blood sugar levels are dropping and can treat it before it gets too low.

If you can, check often!

• Check before and after meals.
• Check before and after exercise .
• Check before bed.
• After intense exercise, also check in the middle of the night.
• Check more if things around you change such as, a new insulin routine, a different work schedule, an increase in physical activity, or travel across time zones.

Don’t Miss: How To Decrease Sugar Level Immediately

What Is Blood Glucose

Blood glucose comes from food. When an individual eats, the food is broken down into sugar and sent to the blood. The insulin is what helps the sugar go into the cells. Once this happens, the sugar that has moved from the blood into the cells is used for energy or is stored.

Glucose is known as the bodys main energy source. Too much glucose in the blood, or if it is not absorbed properly, can create health issues both long and short term. To keep a healthy blood sugar level, it is important to:

• Eat healthily
• Check blood glucose levels
• Keep in contact with your healthcare provider

It is important to keep in contact with a healthcare professional, eat properly, check your blood glucose, and exercise regularly to keep a healthy blood sugar level.

You May Like: High Sugar Symptoms Treatment

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.

Recommended Reading: Is Grapefruit Bad For Diabetes

Causes Of Low Blood Sugar

Low blood sugar is common for people with type 1 diabetes and can occur in people with type 2 diabetes taking insulin or certain medications. The average person with type 1 diabetes may experience up to two episodes of mild low blood sugar each week, and thats only counting episodes with symptoms. If you add in lows without symptoms and the ones that happen overnight, the number would likely be higher.

Examples Of Appropriate Snacks May Be:

• 6 saltine crackers
• 1 slice toast and 1/2 cup milk
• 1 cup milk

The food eaten for a reaction need not be subtracted from a meal plan.

Obtain a blood sugar when symptoms occur if you are able. If symptoms are severe, treat the reaction first and then obtain a blood sugar. Do not drive nor operate equipment if you feel your blood sugar is low.

If your blood sugar drops low enough for you to become unconscious, you must be taken to the hospital and/or treated with glucagon.

Glucagon is a hormone that causes the blood sugar to rise. It can only be given by injection. It is used to treat a low blood sugar if a person becomes semi-conscious or unconscious due to a severe low blood sugar. Please ask your nurse for instruction on glucagon. Your doctor will need to write a prescription for glucagon so you can have it available at home.

Read Also: Hyperglycemia Foods To Avoid

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.

Recommended Target Blood Glucose Level Ranges

The NICE recommended target blood glucose levels are stated below for adults with type 1 diabetes, type 2 diabetes and children with type 1 diabetes.

In addition, the International Diabetes Federations target ranges for people without diabetes is stated.

The table provides general guidance. An individual target set by your healthcare team is the one you should aim for.

Dont Miss: What Is A High Blood Sugar Reading

Recommended Reading: 15-15-15 Rule Hypoglycemia

Low Blood Sugar Symptoms

Hypoglycemia happens when blood glucose levels drop too low. Low blood sugar can be caused by many things including the two different types of diabetes, certain medications, alcohol, endocrine disorders, eating disorders, pregnancy , and disorders of the liver, kidneys, or heart.

Here are some of the most common symptoms that someone with low blood sugar might experience:

• Lightheadedness
• Fainting
• Tingling lips

If your blood sugar is low you might start to feel some of the first signs of hypoglycemia like dizziness, lightheadedness, or sweating. The only way to know for sure if your blood sugar is low is to test it with a glucose meter or other glucose monitoring device.

If you dont have access to these tools and start to feel the symptoms of low blood sugar, consume 15 grams of carbs or take a quick dissolve glucose tablet to raise your blood sugar levels and avoid further symptoms, according to the American Diabetes Association . Once your blood sugar is back in its target range, you can have a snack or meal to make sure it doesnt drop again.

Here are some other lifestyle and medicinal treatments that can help treat hypoglycemia:

• Eat a healthy diet full of whole foods that are minimally processed.
• Take prediabetes or diabetes medications as recommended by your healthcare provider.
• Use a glucagon kit in emergencies. Glucagon is a hormone that raises blood sugar levels quickly.

Target Blood Sugar Ranges For Pregnant People With Diabetes

Blood sugar targets during pregnancy are lower due to hormonal influences. The ADA, AACE, and Joslin Diabetes Center have slightly different guidelines for target blood sugar levels during pregnancy. In general, pregnant women with diabetes will want to follow individual guidelines provided by their endocrinologist.

The ADA recommends maintaining blood sugar levels of 95-140 mg/dL for pregnant women. However, some providers recommend an even tighter goal of blood glucose levels below 89 mg/dL before a meal and below 120 mg/dL after a meal.

To keep close tabs on levels, most diabetes specialists recommend that women with diabetes during pregnancy check their blood sugar:

• First thing in the morning
• Before all meals

Don’t Miss: Diet For Type 2 Diabetes And High Blood Pressure

What Causes A Low Blood Sugar Level

In people with diabetes, the main causes of a low blood sugar level are:

• the effects of medicine especially taking too much insulin, medicines called sulfonylureas , medicines called glinides , or some antiviral medicines to treat hepatitis C
• skipping or delaying a meal
• not eating enough carbohydrate foods in your last meal, such as bread, cereals, pasta, potatoes and fruit
• exercise, especially if it’s intense or unplanned
• drinking alcohol

Sometimes there’s no obvious reason why a low blood sugar level happens.

Very occasionally, it can happen in people who do not have diabetes.

Not Taking Enough Meal Time Insulin

This is the first thing to look into. Make sure that you correctly determine the number of carbohydrates in your last meal of the day and take the insulin to suit. Be sure to also look out for sources of hidden carbs as well. Our bodies react to food and insulin differently at different times of the day. Many individuals including myself have a different carb to insulin ratio at night. I normally have to take a bit more insulin at night especially if the meal is high in carbohydrates.

Try eating your last meal at least 2 hours before bed so that you can check the 2 hour post dinner blood sugar reading. This will indicate if you are indeed giving the correct amount of insulin. If you have a good reading before bed but its much higher in the morning, then there is definitely another issue.

Read Also: Glucagon Deficiency Symptoms

Low Blood Sugar Levels In Diabetes

People with diabetes can have low blood sugar levels because of the medicines they have to take to manage their diabetes. They may need a hormone called or diabetes pills to help their bodies use the sugar in their blood.

These medicines help take the sugar out of the blood and get it into the body’s cells, which makes the blood sugar level go down. But sometimes it’s a tricky balancing act and blood sugar levels can get too low.

People with diabetes need to keep their blood sugars from getting too highor too low. Keeping blood sugar levels in a healthy range means balancing when and what they eat, and when they exercise with when they take medicines.

When Can I Eat Or Drink Again

As soon as your blood is taken, your fast is over. You might want to bring a snack and a drink with you so you can eat as soon as possible after the test.

American Academy for Clinical Chemistry: Basic Metabolic Panel,Comprehensive Metabolic Panel,GGT,Glucose Tests,Iron Tests,Lipid Profile,Renal Function Panel,Vitamin B12 & Folate.

British National Health Service: Can I Eat and Drink Before Having a Blood Test?

Crystal Moore, MD, PhD, FCAP, anatomical and clinical pathologist, Chesapeake, VA.

National Heart Lung and Blood Institute: What Are Blood Tests?

Nemours Foundation: Blood Test: Comprehensive Metabolic Panel .

Providence Laboratory Services : Fasting Instructions.

You May Like: Pedialyte For Diabetics

After You Have Low Blood Sugar

If your low blood sugar was mild , you can return to your normal activities once your blood sugar is back in its target range.

After you have low blood sugar, your early symptoms for low blood sugar are less noticeable for 48 to 72 hours. Be sure to check your blood sugar more often to keep it from getting too low again, especially before eating, physical activity, or driving a car.

If you used glucagon because of a severe low , immediately call your doctor for emergency medical treatment. If you have had lows several times close together , you should also tell you doctor. They may want to change your diabetes plan.

High Blood Sugar: Hidden Dangers

In the short term, high blood sugar levels can zap your energy, cause excessive thirst and urination, and blur your vision. High blood sugar levels can also lead to dehydration, dry and itchy skin, and infections. Minimizing the time spent above your target blood sugar range can help you feel your best and will help prevent complications and injury to your body.

Over time, high blood sugar affects many parts of the body. Chronic high blood sugar can start to cause noticeable changes, including:

• Memory problems
• Vision problems like blurriness, diabetic retinopathy, and blindness
• Gum disease that leads to tooth loss, which can make eating healthy foods difficult due to problems chewing
• Heart attack and stroke due to increased plaque build-up in the vessels and other vascular issues
• Kidney disease, which can lead to the need for dialysis or a kidney transplant
• Nerve damage that can cause decreased sensation in the feet and legs which increases the risk for wounds to turn into serious infections and even amputation

Nerve damage from high blood sugar can also cause a variety of symptoms including:

• Pain and tingling in the feet and hands
• Difficulty emptying your bladder
• Problems during the digestion process after eating, which can cause food to sit in the stomach too long and lead to nausea, vomiting, and erratic blood sugar levels

Checking your blood sugar frequently and taking immediate action when it is above range can reduce your risk of complications.

Read Also: Can Sugar Trigger Afib