What is normal blood sugar level

The blood sugar concentration or blood glucose level is the amount of glucose (sugar) present in the blood of a human or an animal.

The body naturally tightly regulates blood glucose levels (with the help of insulin that is secreted by pancreas) as a part of metabolic homeostasis.

If blood sugar levels are either increased or decreased by a greater margin than expected this might indicate a medical condition.

Keywords: blood sugar, blood sugar levels, blood sugar levels chart, diabetes type 1 and 2, high and low blood sugar levels, normal blood sugar level

Article reviewed: 20th of September, 2014
Article references: http://www.diabetes.org, http://www.diabetes.co.uk

What is blood sugar?
What is diabetes?
Diabetes symptoms
Levels and indication
Normal blood sugar levels
Low blood sugar levels
High blood sugar levels
How to lower blood sugar level?
Children blood sugar levels
Blood sugar levels chart
Checking for BS:
How to check blood sugar?
How to lower blood sugar level?
Can diabetes be cured?

What is blood sugar?

What does it mean when someone refers to the blood sugar level in your body? Blood sugar level (or blood sugar concentration) is the amount of glucose present in your blood. A normal blood glucose level for a healthy person is somewhere between 65 mg/dl (3.6 mmol/l) and 105 mg/dl (5.8 mmol/l). It, of course, depends on every individual alone.

Normal blood sugar level If the blood sugar level is between 3.6 and 5.8 mmol/l or 65 to 105 mg/dl, then we can say this is a normal blood sugar level for a healthy person.

Diabetes symptoms

Typical symptoms of diabetes are thirst, frequent urination and unexpected weight loss. Sometimes a patient may also have impaired vision, itching skin, experience fatigue, have increased appetite, have skin infections, feel dizzy and dehydrated.

Type 1 diabetes symptoms are severe and last for a short time before the disease is diagnosed. Type 2 diabetes symptoms appear slowly and are usually unrecognizable or absent.

Use this tool to see if you are in danger of or are developing diabetes: LINK
Click here for possible diabetes cure.
Use this tool to convert blood sugar values.

What are normal blood sugar levels?

A normal blood sugar level is between 3.6 and 5.8 mmol/l (65 and 105 mg/dl) for a healthy person.

The concentration of glucose in the blood of healthy people in the morning on an empty stomach is between 68 and 108 mg/dl (3.8 to 6.0 mmol/l). Two hours after consuming foods or drinks rich in carbohydrates, the values are usually between 120 and 140 mg/dl (6.7 to 7.8 mmol/l).

For children up to 6 years old, the target blood sugar level before eating should be between 5.5 mmol/l (100 mg/dl) and 10 mmol/l (180 mg/dl). Before going to bed, values should be between 6.1 mmol/l (110 mg/dl) to 11.1 mmol/l (200 mg/dl).

From ages 6 to 12, before eating, glucose levels should be between 5 mmol/l (90 mg/dl) and 10 mmol/l (180 mg/dl) and between 5.5 mmol/l (100 mg/dl) and 10 mmol/l (180 mg/dl) before going to bed. Children age 13 to 19 should expect similar readings as those of adults.

Blood sugar levels chart

Blood sugar levels rise and drop during the day. This is normal. Dramatic fluctuations in your blood glucose levels may indicate problems.

Dramatic changes of blood sugar levels have significant physical symptoms and increase your risk of diabetes-related complications.

Click on the image below to get a larger chart.

blood glucose levels chart

Blood glucose levels chart displays possible levels of blood sugar.

Blood sugar levels chart summarizes blood sugar level values. Values are expressed in mmol/l and mg/dl. This chart is not 100% accurate. Consult your doctor for more information.

High blood pressure (hypertension) can lead to and worsen many complications of diabetes, including diabetic eye disease and kidney disease. Most people with diabetes develop high blood pressure during their life. Read an article on blood pressure.

You can also download your own blood sugar levels log below:
>> blood sugar levels log.
Just right click on the link and press “save as.”

Blood sugar levels chart
Glucose mmol/l (mg/dl) Value
less than 6.1 (110) on an empty stomach normal value
between 6.1 (110) and 6.9 (125) on an empty stomach limit value
more than 7.0 (125) on an empty stomach possible diabetes
more than 11.0 (198) anytime possible diabetes

The next chart displays all possible blood sugar (glucose) levels along with a short explanation what the indicators are.

Blood sugar chart and indicators
Blood Sugar Levels Indication
Less than 70 mg/dl (3.9 mmol/l) Low fasting blood sugar
70 to 99 mg/dl (3.9 to 5.5 mmol/l) Normal fasting blood sugar for adults
100 to 125 mg/dl (5.6 to 6.9 mmol/l) Impaired fasting glucose (pre-diabetes)
126 mg/dl (7.0 mmol/l) and above in more than one test result Diabetes
about 70-125 mg/dl (3.9-6.9 mmol/l) Normal random blood sugar
about 70-145 mg/dl (3.9-8 mmol/l) Normal postprandial blood sugar
about 146-199 mg/dl (8.1-10.9 mmol/l) Borderline postprandial blood sugar. May indicate pre-diabetes.
Less than 70 mg/dl (3.9 mmol/l) Hypoglycemia (Initial Stage)
50 mg/dl (2.8 mmol/l) Hypoglycemia (Fasting)
less than 50 mg/dl (2.8 mmol/l) Insulin Shock
145-200 mg/dl (8-11 mmol/l) Post meal Value suggesting early diabetes
More than 200 mg/dl (11 mmol/l) Post meal Value suggesting established diabetes

Normal values for blood sugar are (values are in mmol/l, mg/dl and HbA1c) in the table below.

Blood sugar levels
Blood sugar levels HbA1c mg/dl mmol/l
low less than 4 less than 65 less than 3,6
normal optimal 4 65 3,6
normal optimal 4,1 69 3,8
normal optimal 4,2 72 4
normal optimal 4,3 76 4,2
normal optimal 4,4 80 4,4
normal optimal 4,5 83 4,6
normal optimal 4,6 87 4,8
normal optimal 4,7 90 5
normal optimal 4,8 94 5,2
normal optimal 4,9 97 5,4
good marginal 5 101 5,6
good marginal 5,1 105 5,8
good marginal 5,2 108 6
good marginal 5,3 112 6,2
good marginal 5,4 115 6,4
good marginal 5,5 119 6,6
good marginal 5,6 122 6,8
good marginal 5,7 126 7
good marginal 5,8 130 7,2
good marginal 5,9 133 7,4
at risk 6 137 7,6
at risk 6,1 140 7,8
at risk 6,2 144 8
at risk 6,3 147 8,2
at risk 6,4 151 8,4
at risk 6,5 155 8,6
at risk 6,6 158 8,8
at risk 6,7 162 9
at risk 6,8 165 9,2
at risk 6,9 169 9,4
dangerously high 7 172 9,6
dangerously high 7,1 176 9,8
dangerously high 7,2 180 10
dangerously high 7,3 183 10,2
dangerously high 7,4 187 10,4
dangerously high 7,5 190 10,6
dangerously high 7,6 194 10,8
dangerously high 7,7 198 11
dangerously high 7,8 201 11,2
dangerously high 7,9 205 11,4
possible complications 8 208 11,6
possible complications 8,1 212 11,8
possible complications 8,2 215 12
possible complications 8,3 219 12,2
possible complications 8,4 223 12,4
possible complications 8,5 226 12,6
possible complications 8,6 230 12,8
possible complications 8,7 233 13
possible complications 8,8 237 13,2
possible complications 8,9 240 13,4
mortal danger 9 244 13,6
mortal danger 9+ 261+ 13,6+

Low blood sugar levels, normal blood sugar levels and high blood sugar levels chart.

What are low blood sugar levels?

When your blood sugar level drops below 63 mg/dl (3,5 mmol/l), it means you have a low level of blood sugar. The usual symptoms of low blood sugar levels are hunger, sweating, restlessness, faltering speech, confusion, tremor, difficulty in concentration, drowsiness, headache, visual disturbances…

Symptoms can vary between different people (organisms), and in some cases, the symptoms can even remain unrecognized (unconscious hypoglycemia).

What are high blood sugar levels?

High blood sugar and diabetes is caused by a number of abnormalities in the body, one of them being the affected vascular walls of small and large arteries (diabetic micro-and macro-angiopathy) in a process called atherosclerosis.

We can say that a blood sugar level is high if we measure glucose level and get the following values – more than 110 mg/dl (6.1 mmol/l) on an empty stomach or at any time more than 200mg/dl (11.1 mmol/l).

measuring blood sugar level If measured blood sugar level is high you should consult your personal doctor! High values of blood sugar may indicate diabetes.

High blood sugar levels affect the arteries throughout the body, especially the organs which have the richest blood circulation: heart, brain, kidney, senses, nerves and other organs.

If the high blood sugar is associated with disturbances in lipid metabolism (blood fat), the abnormalities are more intense. Diabetes is among the risk factors for major non-communicable diseases: cardiovascular (coronary) disease, cerebral vascular disease and peripheral vascular diseases.

How to check blood sugar

Blood sugar level is determined when the person has an empty stomach. In a healthy person, a normal blood glucose level is about 6.1 mmol/l. Read on how to check blood sugar values.

You can easily buy blood glucose tester on this link or by clicking on product links below.

For checking your blood sugar level, you will need:

Medical alcohol to clean the skin where you will prick your finger, a sterile tool to prick your finger, some test strips and a glucose meter to read the test strip.

Expected blood sugar level values
Blood Sugar Level Children mg/dl (mmol/l) Adults mg/dl (mmol/l)
Normal 70 – 100 mg/dL (3.9 – 5.5 mmol/l) 70 – 140 mg/dL (3.9 – 7.7 mmol/l)
Low lower than 70 mg/dL (lower than 3.9 mmol/l) lower than 70 mg/dL (lower than 3.9 mmol/l)
High Over 140 mg/dL (over 7.7 mmol/l) Over 180 mg/dL (over 10 mmol/l)

Can diabetes be cured?

At this time there is no known official case of cured diabetes.

The fact is that with Diabetes type 1 body’s cells that produce insulin are destroyed. These cells cannot be regrown or replaced. You need to use insulin injections to control your blood sugar levels.

With type 2 diabetes your body does not use insulin properly (also known as insulin resistance). Over the time a patient’s condition worsens as body cannot make enough insulin to keep blood glucose at normal levels.

With exercise and proper diet you can control your diabetes and live a normal life. Read more about diabetic diet.

Refer to this article for more information on how brown fat tissue may help control your disease or even revert it! No hoax – scientifically proven!
Brown fat protects against diabetes and obesity in humans

How to lower blood sugar level?

A patient with diabetes is at a 5 times greater risk of developing cardiovascular disease than patients without diabetes. One third of all cardiovascular diseases also affect people with diabetes. Three quarters of diabetics die from cardiovascular disease. Women with diabetes have a 4 times greater risk of death from cardiovascular disease. People suffering from diabetes usually have high cholesterol levels as well.

Disturbances in the metabolism of blood sugar levels are mainly the consequences of heredity (diabetes in the family), age (over 40), poor diet, excessive body weight (obesity) and physical inactivity. Disturbances in the metabolism of blood sugar were present in 20% of adult Europeans during 2002-2005 a study showed.

RECOMMENDATIONS to decrease elevated blood sugar:
Blood sugar level is determined in the fasting state. In a healthy person, a normal blood glucose level is 110 mg/dl (6.1 mmol/l). By measuring values of blood sugar, we can say that there are 3 options:

  • normal blood sugar level (the blood glucose level is normal on an empty stomach),
  • disruption of glycemia (blood glucose in the blood on an empty stomach is increased to a maximum value between 110 and 124 mg/dl (6.1 and 6.9 mmol/l),
  • diabetes (elevated blood sugar levels to 7.0 mmol/l or more).

People with high blood sugar levels can lower their blood sugar levels by maintaining normal body weight, eating healthy and by physical activity. This way you might prevent or delay disease and enhance your health and physical performance.

What can you do to lower the chance of developing diabetes:

  • lose weight – be fit,
  • sleep more, be rested. Read this article on what to do if you cannot sleep.
  • have a healthy diet (read how should a diabetic diet look like) with as many vegetables and fruits, a lot of fiber, consume less calories, less fat, less alcoholic beverages and no simple sugars,
  • workout at least 30 minutes per day.

End of the article.

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86 Comments on this article. Feel free to join this conversation.

  1. carolina December 4, 2014 at 4:50 am - Reply

    I recently checked my blood sugar out of curiosity and it was 49 mg/dL. I felt completely normal though. I’m 17 years old, 4’11 and 105 lbs. I have had symptoms of hypoglycemia in the past (dizziness, increased heart rate, fatigue), but overall, I’m a very healthy individual. My mother has low blood sugar levels, as well, but she’s never experienced this. I must also add that my father is a diabetic (which explains why i have a blood glucose tester) and diabetes runs in my family. I don’t have diabetes, however. So… can anyone explain what’s going on with my blood sugar?!

  2. Autumn November 28, 2014 at 12:13 pm - Reply

    A fasting reading this morning I did was 83 then I ate and checked again after and hour or so it was 110. Then checked again at random it was 96. My doc suggested I might be hypoglycemic because of some of the particular symptoms I’ve had. I’m not sure if my sugar just runs low because most of the time I don’t feel the symptoms. But when I do I get scared out of my wits. I don’t scare easily so I know this is nothing to be messed with. Idk know what my normal sugar level is being that I’m 6’6 148lbs

  3. geraldine November 17, 2014 at 3:29 pm - Reply

    My normal blood sugar reading is between 102 to 110 before breakfast my goal is to keep it from going any higher 126 in the morning before breakfast is high to me .I am type 2 diabetic. I watches what I eat and exercise when I can walking is good

  4. Anushree Pathak November 10, 2014 at 6:16 pm - Reply

    My random blood sugar was 103 is that normal?? Plz reply

  5. gokul bhatt October 16, 2014 at 6:23 am - Reply

    sir i check my blood sugar level in the morning after 2hr of taking meal. it showing 103 mg/dl. what it show. i am 23yr old. & my father has diabetes problem. he give me blood in my child hood when i admitted in hospital that time i was 2 yrs old. is their possibility that i also have diabetes problem.
    please help me, guided me.

    in the hope of favorable response

    thank you.

  6. Zakaria Umar Sumaila October 12, 2014 at 9:23 pm - Reply

    Just around the borderline on both BP and Blood Sugar. Learning how to use natural means (diet and exercise) to keep both within normal ranges.

  7. pinky September 17, 2014 at 5:11 am - Reply

    sir now a days my blood suger level is high after meal my suger in night 183 and after drink tea is 153 and i do not eat sweet and drink then my suger level is high my age is just 24 my 6 month beby and my family heredity blood suger

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