Often suddenly stand up dizzy, what is the reason

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.

Dizziness in standing up for a long time is a physiological phenomenon, which is caused by excessive hypoxia of the brain. On the other hand, when a person who has been squatting for a long time suddenly stands up, the blood vessels of the lower limbs are restored to be unblocked, and then it is like suddenly opening the valve The blood will rush to the lower limbs, so that the blood in the head is not enough, and the brain does not get enough oxygen and nutrition for a while, and some people will have dizziness and heartbeat, but.

It is the body that adapts to this phenomenon.

Soon it was gone! It may also be a manifestation of anemia

E-probe answer: Oh, don't worry, not only you, including e-probe, most people will feel dizzy when they stand up after squatting for a long time.

When a person is squatting, the lower limbs are flexed. At this time, the blood vessels of the lower limbs are compressed, and the blood is not easy to flow to the lower limbs, and the lower limbs will be in a slight ischemic state, and they will feel numb after a long time. When you suddenly stand up after squatting for a long time, the blood vessels in the lower limbs suddenly return to unblocked, as if the floodgates have been opened suddenly, and a large amount of blood will rush to the lower limbs.

The amount of blood produced by a person in a certain period of time is certain, and a large amount of blood rushes to the lower limbs, so that the blood in the head is not enough, and the brain does not get enough oxygen and nutrients for a while, so most people will have dizziness, heartbeat, and black vision. After the body adapts and adjusts, this phenomenon disappears quickly in most people. Therefore, most of this phenomenon is a normal physiological phenomenon, and it is not a disease such as anemia.

It can be caused by anemia, which is a pale or sallow face in an anemic person, giving a feeling of malnutrition, which is caused by the different distribution of blood cells in the body. Ischemia can make people look unbalanced. Anemia causes an abnormal flow of blood to the brain, causing dizziness.

It is generally caused by low blood sugar, and patients can often carry a piece of sugar in their pockets, do not quit sugar less in their daily life, and raise their blood sugar, so that they will not feel dizzy from time to time.