Why does blood pressure rise?
The most well-known reason is salt.
Why does taking too much salt cause high blood pressure?
There are many small holes in the blood vessel. Water comes and goes between the blood vessel and the cell through the holes. Salt controls the amount of the water. Salt has the function to draw water, so if there is proper amount of salt in the blood, the amount of water in the blood becomes proper, maintaining normal blood flow. But if the amount of salt in the blood is too much, the amount of water drawn to salt increases and the amount of blood also increases. As a result, the pressure on the wall of the blood vessel gets higher. This is the state of high blood pressure caused by taking too much salt. But there are other causes of high blood pressure such as smoking, obesity, aging or lack of exercise.
Quiz about high blood pressure
It is known that high blood pressure is related to the person’s character. The person who tends to have high blood pressure has a specific way of sitting chairs.
Q1. Which is the way of sitting chairs done by a person whose character leads to high blood pressure?
(A) Sitting on the edge of the chair
(B) Sitting back leaning to the backrest
A1. (A) Sitting on the edge of the chair
While (B) is a state of being relaxed with sitting back leaning to the back rest, (A) is a state of being restless that the person can move quickly any time sitting forward. This kind of person is called Type A whose characters are positive, active, irritated and restless. Since the person of Type A easily builds up stress, high blood pressure occurs, resulting in heart diseases.
According to an experiment using simulated heart, in the case of healthy blood vessel, it pumps up water to 2 m high, but in the case of blood vessel with blood pressure 200 mmHg, it pumps up water 4 m high (Fig. 1). So the pressure becomes twice as high as healthy blood vessels’. If this high pressure always pushes the blood vessel, it is quite natural that the blood vessel become hard.
Q2. Which disease does a person with high blood pressure tend to have?
(B) Breast cancer
A2. (A) Dementia
Progression of high blood pressure damages the blood vessels in the brain. Cholesterol invades there, producing plaques. If the plaques become big and stop the blood flow in the brain, it becomes difficult to deliver nutrition to the brain cells. As a result, the function of the brain cells becomes weaker and cerebrovascular dementia occurs. According to a research, a person with high blood pressure is 3.5 to 5 times as likely to develop cerebrovascular dementia, compared to a normal person.
It is important to check your blood pressure regularly.
Q3. When is the best timing to check your blood pressure within a day?
(A) Right after you wake up in the morning
(B) Right after you eat lunch
(C) Right after you take a bath in the evening
A3. (A) right after you wake up in the morning
Blood pressure is up and down within a day. Blood pressure gradually goes up from before waking up and it becomes the highest in the afternoon. After that, it gradually goes down and becomes the lowest during sleep. When you eat something, blood pressure goes up and when you take a bath, it goes down. Blood pressure changes depending on the daily activities. So the time right after you wake up in the morning is suitable to check your blood pressure under the same condition without being influenced by various activities. If you are worried about high blood pressure, it is recommended to check your blood pressure twice a day when you wake up and when you go to bed at the same time.
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