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What Is A Safe Blood Sugar Level


Normal And Diabetic Blood Sugar Ranges

What is a normal blood sugar level?

For the majority of healthy individuals, normal blood sugar levels are as follows:

  • Between 4.0 to 5.4 mmol/L when fasting
  • Up to 7.8 mmol/L 2 hours after eating

For people with diabetes, blood sugar level targets are as follows:

  • Before meals : 4 to 7 mmol/L for people with type 1 or type 2 diabetes
  • After meals : under 9 mmol/L for people with type 1 diabetes and under 8.5mmol/L for people with type 2 diabetes

How Food Affects Blood Sugar

When you eat food, your body breaks it down into essential parts:

  • Carbohydrates
  • Fats
  • Vitamins and minerals

All parts are necessary in a healthy diet, but the three types of carbohydrates are particularly important when it comes to your blood glucose level. While the general rule is that the more carbohydrates you eat, the higher your blood sugar level, not all three types of carbohydrates convert to blood sugar at the same rate.


The foods that fit into each carb category include:

  • Starches, or complex carbohydrates: Starchy vegetables, dried beans, and grains
  • Sugars: Fruits, baked goods, beverages, and processed food items like cereals or granola bars
  • Fiber: Whole wheat products, chickpeas, lentils, berries, pears, and brussels sprouts

The glycemic index helps you find out which foods can increase or help decrease blood sugar levels. Based on a scale ranging from 0 to 100, high-indexed foods are rapidly digested, absorbed, and metabolized, resulting in marked fluctuations in blood sugar levels, while low-indexed foods produce smaller fluctuations in your blood glucose.

The American Diabetes Association advises adding lean sources of protein and heart-healthy fats to help reduce the overall glycemic impact of a meal or snack.

Symptoms Of Blood Blood Sugar Levels

Symptoms of blood sugar levels differ depending on if it is high or low. To determine which way the blood sugar have moved, the symptoms for each are typically:

High Blood Sugar Symptoms
Slow healing woundsTurning pale

If symptoms are left untreated, more extreme circumstances can happen such as fainting, weakness, disorientation, vomiting and dehydration. When you notice symptoms, usually more than one at one time, it is advised to see a doctor right away.


It is important to get the right treatment so that you can return to a healthy normal blood sugar level and inhibit it from occurring again.

Treatment methods vary from the severity of the blood sugar level, whether it is high or low and if the patient has existing medical conditions, such as diabetes. Here are ways in which blood sugar levels can be treated:

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How To Do A Finger

Your healthcare team will show you how to do it the first time, but these are the key steps:

  • Wash your hands with soap and warm water. Dont use wet wipes as the glycerine in them can affect the test result. Make sure your hands are warm so its easier to get blood and wont hurt as much.
  • Take a test strip and slot it into the meter to turn it on. Some meters will have tests strips built in.
  • Remove the cap from your finger prick device and put in a new lancet. Then put the cap back on and set the device by pulling or clicking the plunger.
  • Choose which finger to prick but avoid your thumb or index finger . And dont prick the middle, or too close to a nail. Place the device against the side of your finger and press the plunger. Use a different finger each time and a different area.
  • Take your meter with the test strip and hold it against the drop of blood. Itll tell you if the test strip is filled, usually by beeping.
  • Before you look at your reading, check your finger. Use a tissue to stop bleeding, then use it to take out the lancet and throw it away in your sharps bin.
  • You can use the same tissue to take out the test strip and throw that away too. Taking out the strip will usually turn the meter off.

Fasting Plasma Glucose Test

Blood Glucose Levels Chart

A fasting plasma glucose test is taken after at least eight hours of fasting and is therefore usually taken in the morning.


The NICE guidelines regard a fasting plasma glucose result of 5.5 to 6.9 mmol/l as putting someone at higher risk of developing type 2 diabetes, particularly when accompanied by other risk factors for type 2 diabetes.

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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.


Hba1c Test For Diabetes Diagnosis

An HbA1c test does not directly measure the level of blood glucose, however, the result of the test is influenced by how high or low your blood glucose levels have tended to be over a period of 2 to 3 months.

Indications of diabetes or prediabetes are given under the following conditions:

  • Normal: Below 42 mmol/mol
  • Prediabetes: 42 to 47 mmol/mol
  • Diabetes: 48 mmol/mol

There are two types of blood sugar levels that may be measured. The first is the blood glucose level we get from doing finger prick blood glucose tests. These give us a reading of how high our levels are at that very point in time.

The second is the HbA1c reading, which gives a good idea of our average control over a period of 2 to 3 months. The target blood glucose levels vary a little bit depending on your type of diabetes and between adults and children.

Where possible, try to achieve levels of between 4 and 7 mmol/L before meals and under 8.5 mmol/L after meals. The target level for HbA1c is under 48 mmol/mol .


Research has shown that high blood glucose levels over time can lead to organ and circulation damage.

Keeping blood glucose above 4 mmol/l for people on insulin or certain medications for type 2 diabetes is important to prevent hypos occurring, which can be dangerous.

Your doctor may give you different targets. Children, older people and those at particular risk of hypoglycemia may be given wider targets.

FREE blood glucose level chart

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High Blood Sugar In The Morning: Is It The Dawn Phenomenon

If you have high blood sugar levels in the morning, you may be experiencing the dawn phenomenon, the name given to an increase in blood sugar that usually occurs between 2 a.m. and 8 a.m., according to the Mayo Clinic. One reason this occurs: During the early hours of the morning, our bodies secrete higher levels of a hormone called cortisol, says Dr. Spratt. When cortisol levels are high, it can make you more resistant to insulin, a hormone that helps regulate your blood sugar levels.

“Some people have a striking dawn phenomenon,” says Dr. Spratt. “You can look at their continuous glucose tracing and see that their blood sugar level suddenly goes up at 3 a.m.” If this is the case for you, your doctor may adjust your insulin medication or suggest you use an insulin pump .

Blood Sugar Levels During Pregnancy

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The NIDDK states that gestational diabetes is high blood sugar that occurs during pregnancy if you were not diabetic before getting pregnant. Healthy blood sugar during pregnancy can help lower your risk of developing type 2 diabetes later. It can also lower the risk of your baby being born prematurely, at a high birth weight, and having respiratory problems.

Blood sugar and insulin levels during the first trimester of pregnancy tend to be lower than usual, but they rise during the late second and early third trimesters. You can be diagnosed with an oral glucose tolerance test .

These are the steps for the 2-step strategy.


  • Drink a solution with 50 grams of glucose about the amount in 1 16-oz. bottle of a soft drink
  • Get your blood drawn after 1 hour. IF the value is high, retest
  • Fast overnight
  • Drink a solution with 100 grams of glucose about the amount in 12 peanut butter cups
  • Get your blood drawn immediately and after 1, 2, and 3 hours

Or, your doctor might use the 1-step strategy with a 2-hour OGTT:

  • Fast overnight
  • Drink a solution with 75 grams of glucose
  • Get your blood drawn immediately and after 1 and 2 hours

These are some values to know from NIDKK related to gestational diabetes and healthy blood sugar in pregnancy.

Time or Situation
Baseline: at least 105 mg/dl1 hour: at least 190 mg/dl2 hours: at least 165 mg/dl3 hours: at least 145 mg/dl

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What Is The Normal Blood Sugar Level For Seniors

We, humans, get our energy from food. Our body converts food into a sugar called glucose with the help of insulin and supplies the necessary energy required to continue our daily activities.

Is it okay to have a random level of blood glucose? No! Definitely not!


Blood sugar has also got an optimum level. What is it then? Thus, this is our topic today. Here in this article, I will give you a brief idea about the normal blood sugar levels in our body. But my main focus will be on the geriatric or older adult citizens as altered blood glucose level or diabetes is the most prevalent amongst them. So, let dig into the topic quickly!

Table of Content

  • 8 Final Words
  • How Do I Check My Blood Sugar

    You use a blood glucose meter to check your blood sugar. This device uses a small drop of blood from your finger to measure your blood sugar level. You can get the meter and supplies in a drug store or by mail.

    Read the directions that come with your meter to learn how to check your blood sugar. Your health care team also can show you how to use your meter. Write the date, time, and result of the test in your blood sugar record. Take your blood sugar record and meter to each visit and talk about your results with your health care team.

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    How To Prevent Hyperglycaemia

    There are simple ways to reduce your risk of severe or prolonged hyperglycaemia:

    • Be careful what you eat be particularly aware of how snacking and eating sugary foods or carbohydrates can affect your blood sugar level.
    • Stick to your treatment plan remember to take your insulin or other diabetes medications as recommended by your care team.
    • Be as active as possible getting regular exercise can help stop your blood sugar level rising, but you should check with your doctor first if you’re taking diabetes medication, as some medicines can lead to hypoglycaemia if you exercise too much.
    • Take extra care when you’re ill your care team can provide you with some “sick day rules” that outline what you can do to keep your blood sugar level under control during an illness.
    • Monitor your blood sugar level your care team may suggest using a device to check your level at home so you can spot an increase early and take steps to stop it.

    Page last reviewed: 08 August 2018 Next review due: 08 August 2021

    What Causes Blood Sugar To Be High

    25 Printable Blood Sugar Charts [Normal, High, Low] á? ...

    Many things can cause high blood sugar , including being sick, being stressed, eating more than planned, and not giving yourself enough insulin. Over time, high blood sugar can lead to long-term, serious health problems. Symptoms of high blood sugar include:

    • Feeling very tired.
    • Having blurry vision.
    • Needing to urinate more often.

    If you get sick, your blood sugar can be hard to manage. You may not be able to eat or drink as much as usual, which can affect blood sugar levels. If youre ill and your blood sugar is 240 mg/dL or above, use an over-the-counter ketone test kit to check your urine for ketones and call your doctor if your ketones are high. High ketones can be an early sign of diabetic ketoacidosis, which is a medical emergency and needs to be treated immediately.

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    Blood Sugar Level Chart By Age

    Blood sugar levels tend to rise with age due to an increase in insulin resistance and decrease in insulin sensitivity. In one study by the National Health Institute , each extra decade of age was linked to a 2.7 mg/dl increase in fasting glucose, and a 4.5 mg/dl increase in 2-hour post-prandial glucose levels.

    People With Gestational Diabetes

    Gestational diabetes can occur during pregnancy. Often, it is a temporary condition, but it can lead to pregnancy complications.

    The American Diabetes Association recommends that people with a diagnosis of gestational diabetes aim for blood sugar levels similar to those for people without diabetes, although individual targets may vary.

    The ADA offers the following as a guideline:

    Blood sugar level

    A wide range of complications can also result, such as slow wound healing and frequent infections. Other possible complications include:


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    What Causes High Blood Sugar

    A variety of things can trigger an increase in blood sugar level in people with diabetes, including:

    • stress
    • missing a dose of your diabetes medicine or taking an incorrect dose
    • overtreating an episode of low blood sugar
    • taking certain medicines, such as steroids

    Occasional episodes of hyperglycaemia can also occur in children and young adults during growth spurts.

    Easy Ways To Lower Blood Sugar Levels Naturally

    Blood Sugar Levels

    High blood sugar, also known as hyperglycemia, is associated with diabetes and prediabetes. Prediabetes is when your blood sugar is high, but not high enough to be classified as diabetes.

    Your body usually manages your blood sugar levels by producing insulin, a hormone that allows your cells to use the circulating sugar in your blood. As such, insulin is the most important regulator of blood sugar levels .


    However, multiple factors can impair blood sugar management and lead to hyperglycemia.

    Internal causes for high blood sugar include when your liver produces too much glucose, your body makes too little insulin, or your body cant effectively use insulin. The latter is known as insulin resistance (

    2 ).

    The Centers for Disease Control and Prevention reports that 13% of U.S. adults live with diabetes and that another 34.5% have prediabetes. This means that close to 50% of all U.S. adults have diabetes or prediabetes .

    Blood sugar management is especially important for people with diabetes, as chronically high blood sugar levels can lead to limb and life threatening complications (

    Increased insulin sensitivity means your cells can more effectively use the available sugar in your bloodstream.

    Exercise also helps your muscles use blood sugar for energy and muscle contraction .

    Whats more, researchers recommend doing so-called exercise snacks to lower blood sugar and prevent the damage that sitting all day can do .

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    What You Can Drink With Meals

    Add a low-calorie, low-sugar drink or choose water. Proper hydration is essential to helping your body remove excess sugar.

    Some drinks that are good for keeping your blood sugar level low include:

    • Unsweetened tea
    • Unsweetened coffee
    • Sparkling water or club soda
    • Flavored water or sparkling water without added sugar
    • Diet soda or other diet drinks

    How To Test Your Blood Sugar Levels

    After you wake up in the morning, check your fasting blood sugar levels using a blood glucose meter or continuous glucose monitor . Before you use a blood glucose meter, the ADA recommends washing your hands and using the lancing device to get a drop of blood. After you hold the test strip against the drop of blood, your blood sugar levels should appear on the meter.

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    Make A Note Of Your Readings

    It may sound obvious, but you must record your readings. Note them down in a diary, a notebook or in your phone calendar. Some meters have software that lets you do this. You could try a diabetes app too.

    You and your healthcare team can then look back over your results to see if you need to adjust your treatment.

    Check Your Blood Sugar

    Understanding Blood sugar Level Chart

    If you take medication that may cause low blood sugar , its highly advisable to check your blood sugar levels before you try to bring your sugar levels down.

    This is just in case your blood sugar is normal or low, which can be the case in some situations.

    Testing of blood sugar before bringing your levels down is particularly important if you take insulin.

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