Why does hemoglobin in the blood fall: causes, possible diseases, rates and deviations, treatment methods


Who donated blood during or immediately after menstruation? What was your hemoglobin? If the rate is 91 on the 5th day of the cycle, are these monthly influences (they are abundant with me) or real anemia?

I read on the Internet in articles that with chronic anemia, well-being during menstruation is much worse (nausea, drowsiness), they are painful and prolonged. I have a long monthly, but painless and feeling can not be said to bad. I do not even know why such a low rate of hemoglobin. During pregnancy, and that was more (but then there was no blood loss).

What is hemoglobin?

Why does hemoglobin fall in the blood of men and women? This issue is faced by people of different professions, ages. Taking care of your own health should be a priority for people. One of the indicators of well-being is a normal level of hemoglobin. It has a huge impact on our body. If the hemoglobin level goes down, it affects the functioning of all systems.

Hemoglobin is produced by red blood cells (red blood cells). This process occurs at an early stage of development of these blood cells. When inhaling, red blood cells are saturated with oxygen. These cells are a vehicle for hemoglobin. That he is able to connect with oxygen molecules. Hemoglobin transfers it to the cells of our body that need it so much.

Hemoglobin Functions

Hemoglobin not only delivers oxygen to the cells, but also takes carbon dioxide, which is formed during metabolic processes. Substance carries CO2 back to the lungs. If the level of hemoglobin in the blood decreases, it is always the result of certain abnormalities in the body. There are many factors that lead to a decrease in hemoglobin production. As a result, metabolic processes in cells occur incorrectly. This is fraught with a number of negative consequences for the body.

There is a large list of reasons why hemoglobin in the blood drops in women, children and men. If this figure does not correspond to the norm, anemia develops.


Why the hemoglobin in blood drops sharply? To establish the cause of this phenomenon, you need to conduct a comprehensive survey. To establish the level of hemoglobin in the blood allows a simple examination of the blood (general analysis). This is one of the most frequently used methods for the diagnosis of various diseases. One of the main indicators that are studied during the analysis is the level of hemoglobin.

To be diagnosed, you need to go to the hospital. The therapist will give an appointment to conduct such an analysis. Blood is taken from the finger. Before that you can not eat for several hours, as well as smoke. Therefore, such a survey is conducted in the morning. The result can be obtained within a few hours if a rapid test is performed in the laboratory. More often the answer is given out the next day.

Hemoglobin levels are indicated in grams per liter of blood or gamma per deciliter. This indicator may vary depending on age, gender, and physiological characteristics of the organism. There are a number of factors that can give an incorrect result during the survey.

So, quite often there is a situation when a reduced hemoglobin is determined during pregnancy. On average, for an average adult, this figure should be in the range from 110 to 165 g / l. It is also worth noting that elevated levels of this protein in the blood are rarely diagnosed. In most cases, the deviation may be in the direction of reducing the amount of hemoglobin.

Normal rate

Considering why hemoglobin in the blood falls, it is worth noting that for each group of people there are different standards for this indicator. Diagnosis of compliance with the result of the established standard should be done by an experienced doctor. It necessarily takes into account a number of factors that affect this indicator.

It is considered the norm for an adult male if hemoglobin is between 130 and 175 g / l. In women, due to physiological features, this indicator is somewhat lower. Hemoglobin should be in the range from 127 to 162 g / l. The difference in the level of this indicator is due to the presence of a large number of androgens in the blood of men. They stimulate the production of red blood cells.

Norm for pregnant women and children

A separate group includes pregnant women. Their blood hemoglobin level normally ranges from 108 to 142 g / l. During pregnancy, the body needs more iron. This explains why, in pregnant women, hemoglobin in the blood drops.

In children under 18 years of age, this indicator varies with age and does not depend on gender. In the first 2 weeks of life, the child normally has hemoglobin at a level of from 137 to 197 g / l. Over time, this figure decreases. By the first year of life, it ranges from 108 to 132 g / l. By school age, hemoglobin increases. It ranges from 113 to 137 g / l.


Many people are faced with the questions, what factors lead to the development of anemia in the elderly, childhood, why the hemoglobin in the blood of women after birth decreases. Causes and treatment should be considered in detail. Also pay attention to the symptoms that accompany anemia.

When hemoglobin level falls below the established norm, a person feels weak. He quickly gets tired, drowsiness is felt, dizziness appears. Sometimes people with low hemoglobin levels experience severe headaches. Blood pressure decreases, and the heartbeat increases because of this. If the case is running, there may be fainting.

If the development of anemia is associated with iron deficiency in metabolic processes, a number of unpleasant symptoms appear. The epithelium becomes dry. Also become brittle nails. Some patients with a low level of hemoglobin note that the hair on the head falls out a lot.

Considering why hemoglobin in the blood falls, it should be called one of the most common causes of iron deficiency in the body. At the same time, all tissues receive less nutrition for them. Because of this, cells live less. A person has a number of unpleasant symptoms. Memory is deteriorating, it becomes difficult to concentrate your attention. Deviations in taste and smell may occur. A person may want inedible products, such as land. This is a clear sign of low hemoglobin. In the event of such negative occurrences, it is necessary to consult a general practitioner and pass a complete blood count. The sooner the treatment is started, the sooner the normal level of this indicator can be restored.

Categories of causes of low hemoglobin

There are many diseases that result in low hemoglobin levels. Also, the wrong behavior of the person himself often leads to similar negative phenomena. Why does hemoglobin fall in the blood of elderly women, as well as after childbirth? Why do people face similar problems in their lives? There are many answers to these questions.

All the reasons for which hemoglobin falls can be divided into 3 groups. The first category includes violations in the production of iron-containing protein. This is due to the lack of molecules of this microcell. Similar situations happen if a person has pathologies of the gastrointestinal tract. In this case, the substances necessary for metabolism are poorly absorbed from the food consumed. Similar effects have strict diets, starvation. With unbalanced diet, a person consumes few foods that are rich in iron. As a result, he receives less necessary substances. Also, iron deficiency is observed in people who have had surgery on the stomach or duodenum.

The second group of causes includes the rapid destruction of red blood cells. External causes may influence this process. In some cases, the person’s own immunity attacks the red blood cells. The average life span of red blood cells should be about 4 months. But under the influence of adverse factors, it is significantly reduced.

The third group of causes is a decrease in hemoglobin synthesis in the presence in the body of all the components necessary for this. Often this pathology causes a genetic factor.

There is a whole list of reasons why hemoglobin in the blood falls. One of the most frequent adverse factors that affects this indicator is improper, inadequate nutrition. In the diet of a person who suffers from a similar phenomenon, there is not enough animal food. If a person is on a diet for a long time, his hemoglobin level decreases. Therefore, wanting to lose weight, you need to contact a nutritionist. He will be able to pick up a balanced diet. This will eliminate harmful products and supplement nutrition with necessary vitamins and microelements.

Vegetarians often suffer from low hemoglobin levels. Plant foods have enough iron. Simply, it is worse absorbed than when using animal products.

The second most common cause is significant blood loss. If a person recently had an injury in which he lost a lot of blood, you should not take a test for hemoglobin. Its level will be lowered. Severe bleeding can occur not only with injuries, but also during surgery, gastrointestinal diseases, as well as during ectopic pregnancy. Also, if donors donate blood too often, they develop anemia.

Why does hemoglobin fall in the blood of women? Often a similar situation occurs during menstruation. During this period, the body loses some blood. Therefore, to take a complete blood count during menstruation and after them in the first few days is not recommended.

Other reasons

Reduced synthesis of sex hormones can lead to anemia. This explains why hemoglobin in the blood falls in older women. Treatment in this case is prescribed by the therapist after consulting the patient at the endocrinologist.

Chronic infections can cause such disorders. These include tuberculosis, hepatitis, pyelonephritis, pneumonia, etc. In addition, anemia develops with long-term diseases of the kidneys, liver, and lungs. This is especially common in older people. This is due to improper absorption and redistribution of iron in the body.

With ARVI, flu, hemoglobin is also reduced. After recovery, he again returns to normal.

Sometimes called the rapid destruction of red blood cells. This situation occurs in diseases of the brain (stem cells die). With malignant blood pathologies, hemoglobin decreases. At the same time, the level of leukocytes also decreases.

Autoimmune pathologies lead to the development of anemia. They can be caused by diseases of the thyroid gland, systemic connective tissue diseases, as well as glomerulonephritis.

Some more factors ...

Pregnant women often lack hemoglobin. In their position requires a lot of iron. The amount of blood in the body of pregnant women is increasing rapidly. Therefore, a decrease in hemoglobin in this state is normal. However, the doctor will definitely monitor this indicator. Below the standard for pregnant women, this indicator should not fall.

Also in the increased supply of iron a woman needs and during lactation. During birth, the body loses some blood. This is also quite normal, but requires medical supervision. These factors explain why hemoglobin in the blood drops in women after childbirth.

If there are worms in the human body, it also leads to the development of anemia. Parasites consume significant amounts of vitamin B12. Without it, the absorption of iron is not well enough.

Due to stress, excessive physical exertion, hemoglobin levels may also decrease. Therefore, people whose work is associated with such adverse factors must be fully fed, diverse. Smoking and alcohol also reduce the level of hemoglobin in the blood.

To restore hemoglobin level, when the rate is lowered slightly, it is enough to revise your diet. In advanced cases, serious therapy with iron supplements is required. At the same time, a disease is necessarily detected that led to the development of this ailment.

It is important to supplement the diet with vitamins. Especially important are B12 and B6. They are involved in the synthesis of iron, converting it into hemoglobin. Food should be rich in animal proteins. It is necessary to eat fish, meat, eggs every day. These products must be combined with complex fiber (fruits, vegetables). You also need to add to the diet liver, white chicken meat. You have to eat buckwheat, beans, peas and lentils. It is also worth more often to buy tomatoes, onions, pumpkins, new potatoes, lettuce, greens.

Some fruits are rich in iron. These are, for example, apples, pomegranates, bananas, peaches and apricots, quinces and plums. You also need to eat seafood, nuts, chocolate and dried fruit.

Having considered the main reasons why hemoglobin in the blood drops, as well as the treatment of this condition, you can reconsider your lifestyle by harmonizing it. This will avoid the occurrence of anemia and its negative effects.