Why do people get dizzy when they sit or squat for a long time and stand up?

That's because of the short-term lack of oxygen in the brain, after squatting for a long time, a large amount of blood is concentrated below the brain, and suddenly the brain can't supply enough blood, that is, oxygen, so it will be dizzy, which is a normal phenomenon, and there is no need to worry too much.

I believe that many friends have had a long squat after sitting up for a long time, "two eyes and a touch of black" situation, serious and short-term dizziness, in this case, friends do not need to be overly alarmed and worried, this is a normal manifestation of our body mechanism, today to answer your questions, tell you why the dizziness after sitting up for a long time, friends come and learn it.

1. Transient cerebral insufficiency caused by blood descending. When you sit for a long time, because of the long-term compression of the lower limbs, the blood will flow downward, and there will be squeezing and obstacles, and even serious gathering in a certain place, which will make the legs feel numb after standing up. After people get up, the blood that is "intercepted" will flow down instantaneously and rapidly, and the blood at this moment is like opening the gate to release water, the amount is large and rapid, so the heart and brain will not have enough blood to rise but too much blood down, so people will feel dizzy after getting up, which is the phenomenon of instantaneous ischemia of cardiovascular and cerebrovascular vessels.

Second, the phenomenon of anemia will be more obvious. If ordinary people will experience dizziness after sitting up for a long time, then people with anemia may be more obvious and severe. People with anemia are not enough because of hemoglobin, if they are added to squatting for a long time, then after getting up, because of insufficient blood supply to the brain, it will make matters worse, and there will be dazzle, tinnitus, palpitations and even fainting, so people with anemia should gradually slow down when sitting up for a long time, and give the cardiovascular and cerebrovascular a time for reflux and buffering.

3. People with low blood pressure are more likely to experience dizziness when getting up. People with low blood pressure are prone to dizziness, if they experience long squatting and sitting and getting up quickly, then their arterial pressure will be lower, which will make simple dizziness escalate into limb weakness, palpitations, and even shock and fainting, so people with low blood pressure should pay great attention to getting up after squatting and sitting for a long time.

There is a lack of oxygen in the brain, and blood cannot enter the brain well in this way. The amount of oxygen is also very reduced, so it becomes particularly dizzy and uncomfortable, which is not very good.

Because people sit or squat for a long time, people's blood will concentrate in the legs, stand up suddenly, and the blood supply to the brain will not be able to cause dizziness.

Feeling dizzy when you get up is caused by poor blood circulation in your body.

Why do you feel dizzy when you stand up after squatting for a long time?

If you squat on the ground for a little longer, and when you stand up suddenly, you often feel the world spinning and your eyes are full of stars. This is caused by temporary anemia of the head.

When a person is squatting, there are some special cases for the distribution of blood in the body. The first is that the two legs are pressed very tightly, the blood vessels are flattened, and the blood reaching the lower limbs is relatively small; Secondly, because the head is slightly tilted forward when squatting, the blood to the head is relatively more distributed.

When you stand up suddenly, the blood vessels in the lower limbs suddenly release the compression, so a significant part of the blood flows to the lower half of the body.

In addition, blood also has a certain weight in the body, and when you stand up suddenly, the blood flow will also flow to the lower half of the body due to the attraction of gravity and inertia, and the blood distributed to the upper body will be reduced. In addition, when standing up, the head is also upright, and it is more difficult to spurt blood from the heart to the high head.

All of this results in a relative decrease in blood flow to the head. The human brain is the most in need of blood oxygen, and a temporary reduction in blood supply can make people feel dizzy due to temporary cerebral anemia. In addition, due to the decrease in blood in the head, the blood supply to the eyeballs is naturally less, so the phenomenon of dazzling and Venus will occur.

At the same time, anemia and hypoglycemia can aggravate this phenomenon.

It's normal, everyone does.

Because of squatting for too long, the blood circulation in the legs and upper body is not smooth, and the blood pressure is large, and the blood rises rapidly after standing up, flowing to the brain, and the blood pressure rises sharply, causing dizziness.

Many people have this experience: after squatting for a long time and then standing up suddenly, they will feel dizzy and dark. The main reason for this phenomenon is temporary anemia in the brain.

When a person is squatting, the waist and legs are twisted and turned, and the blood cannot flow up and down. If you stand up suddenly at this time, the blood will flow down quickly, resulting in local ischemia in the upper body, but the brain and eyes have particularly strict requirements for oxygen and nutrients, and they must not be slackened. If you are already weak, the situation is more serious.

However, don't panic when this happens, and you don't have to go to the hospital. If the blood supply to the head is insufficient, the heart will immediately work hard to pump blood up, and it will not take long for the body to return to normal. Of course, when standing up, don't move too hard, try as slowly as possible, so that the blood does not flow too violently, and the blood supply to the heart can keep up, and this phenomenon will not occur.

Low blood pressure, or anemia, can be the same.

Eat something bloody, iron, and nutritious.

Blood replenishment is actually supplementing some iron-containing foods.

Jujube, longan, brown sugar, ejiao, honey, various animal blood, hawthorn cinnamon branch brown sugar soup, ginger coix seed porridge, black fungus red date drink, etc. Common blood-replenishing foods are as follows: 1. Boil red dates in water, put red ponds after the water is boiled, boil them, and finally put eggs, 2. Black fungus + rock sugar, steamed and eaten, very blood-nourishing 3. Black-bone chicken 4. Red beans, peanuts with skin, black fungus, and red dates are cooked together in soup 5. Golden enoki is rich in iron, as well as vitamins A, B1, C and nutrients such as protein, fat and colchicine.

6. Longan meat, also known as longan meat, is rich in iron and contains vitamin A, B, glucose, sucrose, etc., and postpartum women eat longan soup, longan gum, longan wine, etc. 7. Black beans Black beans, also known as black beans, can produce blood and black hair, and can also be used to cook soup with black beans after giving birth. 8. Hair cabbage is black in color and contains iron, so it can replenish blood, and women can also use hair cabbage to cook soup after giving birth as a blood supplement.

9. Carrots are carrots, which contain vitamins B and C, and contain a special nutrient carotene, which is very beneficial to blood nourishment, so carrot soup is a good blood nourishing soup. 10. Spinach is extremely rich in iron and carotene, so spinach can be regarded as an important food among blood-nourishing vegetables.

Squatting and standing up again, the head is dizzy Why squatting for a while, standing up again will make you dizzy. Medically speaking, it is called temporary cerebral insufficiency due to low blood pressure in the head when squatting, resulting in blood unable to reach the brain, and the oxygen concentration of red blood cells decreases, causing dizziness, dizziness, tinnitus, fatigue, and other symptoms to put it bluntly, that is, people with anemia who are hypoxic will have **mucous paleness, dizziness, dizziness, tinnitus, fatigue, palpitation, shortness of breath and other symptoms If not carried out in time**, the consequences will be very serious, iron-rich foods mainly include liver, kidneys, heart, gastrointestinal and kelp, seaweed, soybeans, spinach, Celery, rape, tomato, apricot, jujube, orange, etc. are rich in iron, and folk also commonly use longan meat, jujube, and peanut underwear as blood tonic food. Modern medical research has proven that only ferric ions can be absorbed by the body.

In an acidic environment, ferric iron is easily converted to water-soluble ferric iron, and iron absorption is hindered if there is a lack of stomach acid in the elderly. Therefore, in order to promote the absorption of iron, you should also eat some acidic foods, such as tomatoes, jujubes, pickled cucumbers, sauerkraut, etc. Vitamin C also promotes the absorption and utilization of iron.

Therefore, eat more vitamin-C-rich foods, such as fresh vegetables and fruits. B vitamins (vitamin B12, folic acid) are necessary for the growth and development of red blood cells, animal liver and lean meat are more abundant, green leafy vegetables and other foods also contain folic acid, can be eaten more. Protein is an important raw material for haemoglobin, and patients with anemia should eat more protein-rich foods, such as milk, fish, eggs, soybeans and soy products.

Patients with anemia often have poor appetite or indigestion, so special attention should be paid to the color, aroma and taste of the diet to promote the patient's appetite. In fact, delicious dishes also have a stimulating effect on gastric acid secretion.