It is known that high blood pressure is the leading risk factor for human death. Every year, more than 10 million people around the world die from cardiovascular and cerebrovascular diseases due to high blood pressure.
The so-called cardiovascular and cerebrovascular diseases mainly refer to coronary heart disease and stroke.
Stroke includes ischemic stroke, that is, cerebral infarction; and hemorrhagic stroke, that is, cerebral hemorrhage.
A large amount of evidence shows that high blood pressure is the biggest risk factor for stroke.
China has the highest incidence of stroke in the world and is known as the "Kingdom of Stroke".
Many people are now complaining that more and more people are dying of cerebral infarction or cerebral hemorrhage even at a young age, or are suffering from lifelong disabilities such as hemiplegia. This reflects the high incidence of cerebral stroke in our country. situation.
The biggest reason why so many people have strokes is that high blood pressure has not been well controlled for a long time.
Research has found that as long as systolic blood pressure (high pressure) is higher than 106 mmHg, the risk of stroke increases. When it further rises to the clinical diagnostic standard of hypertension (higher than 140/90mmHg), the risk of stroke increases by 2 to 4 times.
These conclusions are reached through a large number of observations and experiments by scientists over a long period of time.
Now, a long-term study from Israel with a follow-up of 30 years adds to the strong evidence that high blood pressure increases the risk of stroke.
Scientists monitored the blood pressure of 5,079 middle-aged people nine times over a 30-year period from 1985-1986 to 2015-2016. In 2018, they determined the incidence of stroke during the period and analyzed the relationship between blood pressure and stroke. A correlation analysis was conducted on the risk of occurrence.
The results showed that compared with people with normal blood pressure,
- people whose blood pressure (baseline blood pressure) was in stage 2 hypertension for the first time had a 3.72 times increased risk of stroke;
- whose blood pressure at the age of 30 was in stage 2 hypertension. A person's risk of stroke increases by 4.14 times;
- A person whose blood pressure is stage 2 hypertension at the age of 40 has a 5.59 times increased risk of stroke;
- The blood pressure level is between elevated blood pressure (also called high normal blood pressure) and stage 1 hypertension. People with high blood pressure have much lower risks in their brains.
The study not only further proves the basic fact that high blood pressure significantly increases the risk of stroke; the study also shows that the correlation between high blood pressure and stroke increases significantly with age.
This study further reminds us that in order to avoid the occurrence of stroke, we must first strictly control blood pressure levels.
High blood pressure classification
Although the United States has lowered the diagnostic standard for hypertension to 130/80mmHg in 2017.
is based on the diagnostic standard of 130/80mmHg for hypertension. Different blood pressure levels are classified as follows:
However, the hypertension guidelines in my country and Europe still use the traditional 140/90mmHg as the standard for diagnosing hypertension.
Based on the diagnostic standard of 140/90mmHg for hypertension, different blood pressure levels are classified as follows:
The stage 2 hypertension in the above study corresponds to the stage 2 hypertension in the table above.
