Many factors can cause high blood pressure. The heart’s ability to pump blood is enhanced, such as increased heart contraction force, which increases the amount of blood pumped out per second.
Another factor is that the large arteries lose their normal elasticity and become stiff. When the heart pumps blood, they cannot expand effectively. Therefore, the blood pumped out by each heartbeat passes through a narrower space than normal, resulting in increased pressure.
This is why hypertension often occurs in elderly people whose arterial walls are thickened and stiffened due to atherosclerosis. Due to the stimulation of hormones in nerves and blood, small arteries throughout the body can temporarily contract, which also causes an increase in blood pressure.
7 causes of high blood pressure?
1. Age: The incidence rate tends to increase with age, and the incidence rate is high in people over 40 years old.
2. Salt: People who consume a lot of salt have a high incidence of hypertension. 2g/day of salt almost never causes hypertension; 3-4g/day, the incidence rate of hypertension is 3%, 4-15g/day, the incidence rate is 33.15%, and 20g/day, the incidence rate is 30%.
3. Weight: The incidence rate is high in obese people.
4. Genetics: About half of patients with hypertension have a family history.
5. Environment and occupation: A noisy working environment and overly intense mental work are prone to hypertension, and the incidence of hypertension in cities is higher than in rural areas.
6. Increased volume of fluid in the circulation： This is common in kidney disease, when the kidneys are unable to adequately remove sodium and water from the body, causing increased blood volume and resulting in higher blood pressure.