Health, Medicine
How much sugar should be in the blood of a healthy person?
Sugar, although called "white death", but in reasonable quantities to our body, it is necessary, since it is the most accessible and generous source of glucose. The main thing is not to overdo it with its eating, that is, to have an idea of how much sugar should be in the blood of a healthy person. Now many people consider this natural product harmful, and before it they treated with respect, they even treated heart and stomach diseases, poisoning, nervous disorders. In our time, you can hear that sugar improves the brain. Therefore, some students try to eat more sweet before the exams. In principle, both ancient doctors and current sweet students are not far from the truth, because sugar, or rather glucose, is really a very important product for the normal functioning of the body, including the brain, but only on condition that the norm is observed. How much sugar should be in a person's blood is not an idle question. If it is more than necessary, the serious ailment of the rich and poor is diagnosed - diabetes mellitus. If the sugar is less than normal, the situation is even worse, since a person can swiftly fall into a coma and die.
Is sugar a blessing or a harm?
Even babies know what sugar is. Without it, many do not imagine tea, coffee. It's clear, cakes and pies are not without it. Sugar belongs to the group of carbohydrates that the body needs not only to provide its energy. Without them, metabolic processes can not proceed properly. Some beauties for the sake of a harmonious figure exclude from the menu carbohydrates, not realizing that thereby provoke dangerous diseases. How much sugar should be in a person's blood so as not to get sick?
The average values, expressed in moles per one liter, are 3.5, the maximum is 5.5.
Molecules of sugar are quite complex, and through the walls of blood vessels can not simply seep. With eaten food, sugar first enters the stomach. There for its molecules consisting of various compounds of atoms of carbon, oxygen and hydrogen, special enzymes - glycoside-hydrolases are accepted. They split large and bulk sugar molecules into smaller and simple molecules of fructose and glucose. So they get to us in the blood, sucked in by the walls of the intestine. Glucose seeps through the walls of the intestines easily and quickly. Finding out how much sugar should be in the blood, it is this chemical that is meant. It is necessary for all human organs as a source of energy. It is especially difficult without him to the brain, muscles, heart. Moreover, the brain, in addition to glucose, can not be assimilated by any other source of energy. Fructose is digested somewhat more slowly. Once in the liver, it undergoes a number of structural changes there and becomes all the same glucose. The body uses it as much as it needs, and the remains, converted into glycogen, "folds" in reserve in muscles and in the liver.
Where does superfluous sugar come from?
If people completely refuse sweets, they will still have sugar in their blood . This is because almost all products contain some amount of it. There is it in many beverages, in sauces, in various instant porridges, in fruits, vegetables, even in sausage, sorrel and onions. So do not be scared if you have sugar in your blood. It's quite normal. The main thing is to know what the level of sugar in the blood should be, and monitor it. Again, in a healthy adult, but not an old man from morning to breakfast, the sugar norm, measured in millimoles (millimoles) per liter, is:
- 3,5-5,5 at the analysis from a finger;
- 4.0-6.1 when analyzed from a vein.
Why sugar is measured in the morning? Our body in critical states (for example, overstrain, elementary fatigue) is able to "do" glucose independently from available internal reserves. They are amino acids, glycerol and lactate. This process is called gluconeogenesis. It flows mainly in the liver, but can also be carried out in the intestinal mucosa and kidneys. In a short time interval, gluconeogenesis does not carry danger, on the contrary, it supports the normal functioning of body systems. But its prolonged course leads to very deplorable results, since vital structures of the organism begin to break down for the production of glucose.
At night, waking a sleeping person, you can not also take samples for sugar, because when all the human organs are in a state of complete rest, in his blood the amount of sugar decreases.
Now let us explain why the given norm is not characteristic for any age of a person. The fact is that over the years, all the systems of the body grow old, and the digestibility of glucose decreases. How much sugar should be in the blood of people who are more than 60 years old? The medicine determined for them, in the units of measurement of mmol / l, the following norm: 4.6-6.4. For those who are over 90 years old, the rates are approximately the same: 4,2-6,7.
"Jumps" the level of sugar and our emotional state, from stress, fright, excitement, because some hormones, for example adrenaline, "make" the liver synthesize additional sugar, so you need to measure its amount in the blood, in a good mood.
But the gender of the sugar does not depend on the sex, that is, the figures given are the same for both women and men.
Sugar in the blood and food
If a person is not at risk, that is, his immediate family does not suffer from diabetes mellitus, and if he does not notice signs of this disease himself, he should measure blood sugar on an empty stomach. As already noted above, this delicious product is found in very many products. But even if they are not included in the daily diet menu, specific enzymes can break down not only the molecules of classical sugar (sucrose) to glucose, but also maltose, lactose, nigeroz (rice black sugar), trehalose, turanose, starch, inulin, pectin and Some other molecules. How much sugar should be in the blood after a meal, depends not only on the composition of the dishes. It is also important how much time passed after the meal. We put the indicators in the table.
| Time | Sugar amount (mmol / l) |
| It's been 60 minutes | Up to 8,9 |
| It's been 120 minutes | Up to 6,7 |
| Before dinner | 3.8-6.1 |
| Before dinner | 3.5-6 |
Increased sugar is not a harbinger of something bad with health and means only that the body has received enough material for its daily work.
Patients with diabetes mellitus are required to measure their homes sugar in the blood many times: both before meals and after all meals, that is, constantly keep it under control. How much sugar should be in the blood of such patients? The level should not exceed the following:
- Before breakfast - 6.1 mmol / l, but not more;
- After any meal priming no more than 10.1 mmol / l.
Of course, a person can take blood for analysis only from his finger. To do this, there is an unusually simple device glucometer. All that is required is to press it to the finger before the drop of blood appears, and in a moment the result will appear on the screen.
If the blood is taken from the vein, the norm values will be slightly different.
Reduce the level of glucose (or, as it is called, sugar) can be using very delicious products:
- grain bread;
- Vegetables and fruits with sourness;
- Protein food.
The role of insulin
So, we have already discussed how much sugar should be in the blood. This indicator is dependent on a single hormone - insulin. Glucose, which is in the blood, alone can take for their needs only some of the human organs. It:
- a heart;
- nerves;
- brain;
- Kidney;
- Testes.
They are called insulin-independent.
All the others help to use glucose insulin. Produce this hormone special cells of a small organ - the pancreas, called in medicine the islets of Langerhans. In the body, insulin is the most important hormone, in charge of which a lot of functions, but the main one is to help glucose to penetrate through the plasma membranes into organs that do not take glucose without additional help. They are called insulin-dependent.
If, for various reasons, islets of Langerhans do not want to produce insulin at all or produce it insufficiently, hyperglycemia develops, and doctors diagnose type 1 diabetes mellitus.
Often it happens that insulin is produced enough and even more than necessary, and there is a lot of sugar in the blood. This occurs when insulin has irregularities in its structure and can not sufficiently transport glucose (or the mechanisms of this transport themselves are violated). In any case, diabetes mellitus type 2 is diagnosed.
Stages of diabetes
Both diseases have three stages of severity, each with its own indicators. How much should sugar in the blood show in the morning, even before a small snack? We put the data in the table.
| Degree of severity | Sugar amount (mmol / l) |
| I (easy) | Up to 8,0 |
| II (medium) | Up to 14,0 |
| III (Heavy) | More than 14,0 |
With mild disease, you can dispense with drugs, regulating sugar with a diet.
At an average severity level, the patient is prescribed a diet and taking oral medications (tablets) that reduce sugar.
In severe cases, patients are required to receive insulin on a daily basis (according to generally accepted practice, this occurs in the form of injections).
In addition to the types of diabetes, there are its phases:
- Compensation (blood sugar level returns to normal, there is no urine in the urine);
- Subcompensation (in the blood the index is not more than 13.9 mmol / liter, and with urine goes up to 50 grams of sugar);
- Decompensation (a lot of sugar in the urine of patients, and in the blood) - this form is the most dangerous, fraught with hyperglycemic coma.
Test for susceptibility to glucose
The first signs of diabetes are hardly quenched thirst and increased urination. In this case, sugar may not be present in the urine. It begins to stand out when the concentration of glucose in the blood is exceeded, which the kidneys can process. The doctors set this value at the level of 10 mmol / l and higher.
When there is a suspicion of diabetes, a special test for susceptibility to glucose is carried out. This kind of analysis is as follows: the patient is offered to drink 300 ml of water without gas, in which 75 g of powdered glucose is diluted. After this, a blood test is performed every hour. To make the verdict, take the average of the three final results and compare them with the control level of sugar, which was determined before taking glucose.
How much mmol should there be sugar in your blood? Information for better visibility we put into the table.
| Test results | Fasting measurement | Final measurement |
| Healthy | 3.5-5.5 | <7.8 |
Tolerance is impaired, the condition is prediabetic | <6.1 | 7.7-11.1 |
| The patient has confirmed diabetes mellitus | ≥6.1 | ≥11,1 |
During the test, the patient is taken for analysis and urine in parallel with the blood. Before taking the tests a person should not eat from 8 hours, have a good rest and not have infectious diseases.
To sit down on any diet before the test is not necessary.
Pregnancy Sugar
There is a condition called diabetes mellitus, or diabetes of pregnant women. This means that in women with a period of 28 weeks and more, sugar is found in the blood above the norm. This happens because of hormonal disorders and because of the placenta production of estrogen, lactogen, progesterone, that is, steroid hormones. At the majority of pregnant women after a birth of the kid the sugar comes to norm or rate, but all the same if already there was a gestational diabetes is the first signal to that in the further there can be a diabetes true. The analysis for sugar during a primary visit to a woman's consultation should be conducted by all pregnant women. How much sugar should be in the blood? The indicators are the same as for all non-pregnant women, namely: on a completely empty stomach (even drinks can not be taken) 3.5-5.5 mmol / l.
If the pregnant woman does not notice the symptoms of diabetes and is not at risk, reassessment is prescribed after 28 weeks.
If a woman suffered from diabetes before pregnancy, control of the sugar content in her blood is carried out regularly, and appropriate treatment is prescribed.
Increased sugar levels are fraught with complications:
- Polyhydramnios;
- Miscarriages;
- Premature delivery;
- Trauma at birth for the mother and infant;
- Death of the fetus.
Scrupulous control over the blood sugar content is carried out by those pregnant women who are at risk. The criteria are as follows:
- obesity;
- Sugar is found in urine;
- Among relatives there are those suffering from diabetes mellitus;
- Failures of carbohydrate metabolism;
- Age over 35 years;
- At the first pregnancy already diagnosed as "gestational diabetes";
- There are ovarian diseases;
- Previous pregnancy was complicated by polyhydramnios and / or large fetuses;
- Presence of arterial hypertension;
- Severe form of preeclampsia.
Test for susceptibility to glucose in pregnant women
If a woman is at risk, at the first visit to a gynecologist about pregnancy, she is screened for susceptibility to glucose. Thus it is not necessary to measure sugar in blood on an empty stomach. The screening consists in the following: a pregnant woman, regardless of whether she ate something or did not eat, drink water (about a glass) with 50 grams of glucose dissolved in it, and after an hour measure blood sugar (from the vein). The value should not exceed 7.8 (mmol / l).
If the value is greater, conduct a full test.
Pre-woman is preparing. Three days before the test, she should eat at least 150 grams of carbohydrates every day. Also, she should, as usual, walk, perform feasible work, so that the body needs glucose.
On the fourth day - already on an empty stomach - she gives blood from a vein, and only after that she drinks 75 grams of glucose dissolved in water. The blood sugar is then measured three times every hour. Normal blood sugar should be how much? We propose to determine the indicators by the Somogy-Nelson system.
- Values in venous blood: 5,0 - 9,2 - 8,2 - 7,0 mmol / l.
- Values in the plasma: 5.9 - 10.6 - 9.2 - 8.1 mmol / l.
If necessary, glucose is not administered orally, but intravenously.
The test is not performed in the following cases:
- toxicosis;
- The pregnant woman does not get out of bed;
- Exacerbation of pancreatitis;
- infectious diseases.
Sugar in the blood of children
In infants, problems with the amount of glucose in the blood are rare. You can determine them by the following criteria:
- The child is capricious for no apparent reason;
- He has a constant thirst;
- Long do not heal intertrigo;
- Copious urination;
- rapid pulse.
Do newborns have enough sugar in their blood? Values can vary within the limits of 2.8-4.4 mmol / l.
This is slightly lower than in adults, since the child's body has not yet stabilized the reaction of metabolism.
Sugar rises when the pancreatic cells work. The risk group includes children whose parents have diabetes.
Rates of glucose, or, as they say, sugar in children in their blood at the age of 5 years are: from 3.3 to 5.0 mmol / l. In older age, the norms are the same as for adults.
If the analysis produced a result of 6 and above mmol / l, the child is tested for susceptibility to glucose. The principle of its conduct is the same as for adults. The difference is only the amount of glucose used for the load. It is administered based on the weight of the small patient. Up to 3 years - 2 grams per 1 kg of weight, up to 12 years - 1.75 g per 1 kg, and for older - 1.25 g per 1 kg, but not more than 25 grams as a whole.
How much sugar should be in a test? We put the indicators in the table.
| The analysis time after the passage of time (minutes) | Sugar amount (mmol / liter) |
| Before eating (any) | 3.9-5.8 |
| thirty | 6.1-9.4 |
| 60 | 6.7-9.4 |
| 90 | 5.6-7.8 |
| 120 | 3.9-6.7 |
If the indication is higher, the child is prescribed treatment.
Hypoglycemia, or lack of blood sugar
When the sugar molecules are too small in the blood, absolutely all organs lose energy for their activity, and the condition is called hypoglycemia. With her, a person may suffer loss of consciousness and coma, and death after her. How much sugar should be in the blood, we indicated above. And what indicators can be considered dangerously low?
Physicians call figures less than 3.3 mmol / l, if you take blood from the finger for analysis, and below 3.5 mmol / l - in the venous blood. The boundary value is 2.7 mmol / l. A person can then be helped without drugs, simply by giving him quick carbohydrates (honey, watermelon, banana, persimmons, beer, ketchup) or d-glucose, which is already able to penetrate the bloodstream.
If the sugar values are even lower, the patient may need specialized help. It is especially important in hypoglycemia to know how much sugar should be in the blood in the evening. If the glucometer gave 7-8 mmol / l - it's okay, but if the device gave 5 mmol / l or even less - sleep can go to someone.
Causes of reduced sugar:
- malnutrition;
- dehydration;
- An overdose of insulin and hypoglycemic agents;
- High customs clearance;
- alcohol;
- Some diseases.
Symptoms of hypoglycemia are many. Among the main and most characteristic are:
- weakness;
- High sweating;
- tremor;
- Dilated pupils;
- nausea;
- dizziness;
- Violation of breathing.
Often, to remove such symptoms, it is good enough to eat.
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