Why do you get dizzy when standing up and sitting down?

There are many causes of dizziness when standing up and sitting down, such as:
When we change positions too quickly such as standing up and sitting down, or lying down but sitting up, the heart will not be able to adjust. pumping extra blood, causing blood pressure to drop within a fraction of a second, will make the body feel dizzy, dizzy. As for puberty, it is possible that children are suffering from iron deficiency anemia. Because iron is an important mineral, it affects many different functions of the body. Included in it is the synthesis of hemoglobin (hemoglobin) - the transporter of oxygen in the blood, providing energy for the living activities of cells. When the body lacks iron, the body will be easily tired, weak and will experience dizziness when standing up and sitting down.

Any age can experience this condition, but the most common and associated with pathological signs is seen in young adults and the elderly.
Common in elderly patients, because the elderly are less physically active, and suffer from chronic diseases such as high blood pressure, low blood pressure, atherosclerosis, or blockage of blood vessels, making blood circulation poor. This situation will often happen. During puberty, due to changes in the body, the need for iron increases, if there is no regular diet and iron supplementation, dizziness is very normal.

If the dizziness occurs often, it will be a signal of some problems that your body has, including:
Iron deficiency anemia (in children during puberty) Because children are in puberty subject to a high risk of iron deficiency, mainly due to the significant increase in iron requirements in the body during growth. In particular, at this age, girls begin to menstruate and often tend to diet to beautify their figure. Therefore, female babies will easily become anemic and cause dizziness when standing up and sitting down. On average, a 14-18 year old girl needs about 15 mg of iron per day. Boys need about 11mg of iron.
The harmful effects of iron deficiency are extremely worrisome, including: Poor physical development; or sleepiness, distraction that affects academic performance
Postural hypotension Postural hypotension, which occurs when standing up from a sitting or lying position, is a form of low blood pressure. This hypotension occurs mostly in people of advanced age. Orthostatic hypotension, which lasts a few seconds to several minutes after standing, is a mild form. However, long-term orthostatic hypotension can be a sign of more serious problems, so talk to your doctor if you have persistent dizziness.
Other diseases Symptoms of dizziness when standing up can be an early sign of many diseases in the nervous system, cardiovascular system, anemia or gastrointestinal bleeding ...

If you are in a sitting or lying position, do not get up suddenly. Because standing suddenly causes blood to quickly flow to the lower body, making the nervous system ischemic, causing dizziness. So you should stand up slowly, so that the blood circulation is uniform.
If this condition appears many times, then you should go to the hospital to see a doctor to screen for dangerous causes of dizziness and have the most appropriate treatment.

Get a general test to see if you have anemia. This gives you a basis for aligning your diet and taking medication if needed appropriately. Choose foods that add iron to the body, and limit unhealthy foods such as red meat, fish and poultry, plant sources of iron such as black sesame seeds, beans, peas Orchid, broccoli, cereal and bread. Add foods rich in vitamin C to help the body absorb iron better, helping to avoid sitting down and standing up dizzy such as oranges, tangerines, lemons, grapefruits, strawberries, tomatoes,... Limitation Use stimulants, limit drinking tea and coffee. Because these drinks affect iron absorption, leading to dizziness and lightheadedness in puberty. If you need to supplement iron from medicine, especially in puberty, you should take iron properly, according to the dose prescribed by your doctor to avoid excess iron in the body, and cause other health problems. Supplement with vitamin B6, an essential nutrient for the body to help synthesize proteins and metabolize red blood cells. In addition, vitamin B6 also stimulates the nervous and immune systems to help them work effectively. Vinmec International General Hospital is one of the hospitals that not only ensures professional quality with a team of leading doctors, modern equipment and technology, but also stands out for its examination and consulting services. and comprehensive, professional medical treatment; civilized, polite, safe and sterile medical examination and treatment space.