Why squat for a long time to stand up to meet in front of a black? Is it anemia? The answer is not as simple as you think

I believe many people have had such experience: after squatting for a long time, suddenly stand up, there will be dizziness, Venus in the eye, feet soft, black in front of the phenomenon, carelessly may fall. < / P > < p > some people say that this situation may be caused by leg numbness after squatting for a long time; others say that it is caused by anemia or hypoglycemia and need to eat more brown sugar; others say that it may be caused by hypotension or heart problems and need to go to the hospital to take a film for examination. < / P > < p > when suddenly standing up, the brain first responds, and then the blood pressure reflex regulation mechanism quickly receives the signals from the brain, and quickly adjusts the blood flow distribution to maintain the stability of blood pressure. < / P > < p > because of the damage of blood pressure regulation mechanism, the elderly or patients with cardiovascular disease often appear dizziness, blackness in front of eyes, numbness in legs and feet and other discomfort symptoms. This phenomenon is called “postural hypotension” in medicine, and even syncope and fall when it is serious. < / P > < p > postural hypotension is a condition in which the blood pressure drops significantly when people stand fast. The medical evaluation standard was that the systolic blood pressure decreased by 20 mmHg or diastolic blood pressure decreased by 10 mmHg after standing. In addition, some vasodilators or antihypertensive drugs, such as diuretics and antihypertensive drugs, can also cause orthostatic hypotension in the elderly. < / P > < p > therefore, it is necessary to take proper rest and avoid violent activities after taking medicine. If from behind, there are dizziness, dizziness and other discomfort symptoms, should calm down to rest. Consult the doctor if necessary, and adjust the medication according to your own situation. < / P > < p > the water and salt are not replenished in time: the amount of exercise is large, the amount of sweating is large, and the similar situation will appear when the water and salt are not replenished in time. < / P > < p > hypoglycemia and anemia: hypoglycemia and anemia will have similar dizziness and standing instability, but dizziness caused by hypoglycemia and anemia can occur in any case, we need to treat them differently. < / P > < p > whether healthy people or patients with long-term bedridden disease, as well as elderly people with high blood pressure, they should move slowly from squatting up to standing up or lying down to getting up. < / P > < p > no matter what causes dizziness, we can strengthen our physical fitness and immunity by taking proper exercise every day, so as to prevent and regulate it. < / P > < p > to sum up, it’s because the blood pressure can’t keep up with the change of body position that you suddenly get up in front of you. In addition, there are several other cases of dizziness should be paid attention to, according to their own situation to adjust. Finally, I would like to remind you that if you have frequent dizziness, blackness and other symptoms, you should see a doctor in time! 08/16/2020