BLOOD PRESSURE AND CAUSES hypertension

What is blood pressure?
Blood pressure is the force of blood necessary impact on the arteries to increase blood flow to nourish the body's tissues. So, hypertension is secondary to exist naturally in the human body like water pressure inside the trench, pipe ... Blood pressure is determined by the amount of blood pumped by the heart (cardiac output) and resistance of arteries . Tim pump as much blood as the arteries narrow, the more prone to hypertension.
 

Blood pressure represented by two indicators:
(1) The maximum blood pressure (also called hypertension or systolic index called on), normally from 90 to 139 mm Hg (millimeters of mercury).
(2) the minimum blood pressure (also known as or diastolic blood pressure is called the bottom), normally from 60 to 89 mm Hg.
Each person must always know and remember the two indexes your blood pressure!
What is considered to be high blood pressure?
When blood pressure readings above 140/90 mmHg after repeated measurements, it is called high blood pressure or hypertension is exactly ap.Thong often through several exams in 1-2 months to determine the blood pressure by attaching a diagnosis of hypertension means a person responsible for attaching a healthy life for them.
Each person must always know and remember the two indexes your blood pressure!

The cause of hypertension
- Hypertension of unknown cause (also known as idiopathic hypertension or primary, primary): 90% -95%.
- High blood pressure can cause (secondary hypertension, suffering from): 5% -10%.
The difference is that hypertension may cause the cure thoroughly. Example: Hypertension due to renal artery stenosis after angioplasty, the arteries narrow, blood pressure returned to normal, not long-term medication.

(1) Hypertension Idiopathic

Up to 95% of cases of hypertension in the United States that the underlying cause can not be identified, called idiopathic hypertension. Although idiopathic hypertension remains somewhat mysterious, but it is related to a number of risk factors for certain.

High blood pressure tends to occur in people who have family history of hypertension and are more likely to affect men more than women.

Age and race is a factor related to hypertension. In the United States, blacks are at risk for hypertension than 2 times higher than whites, although the gap narrowed started at the age of 44 years. After 65 years, black women have the highest incidence.

Idiopathic hypertension also greatly affected by diet and lifestyle. There is a special relationship between salt and high blood pressure. People living on the northern island of Japan eat more salt than anyone in the world and the incidence of idiopathic hypertension highest in the world. Conversely, those who do not add salt to their food almost no signs of idiopathic hypertension. Most of all people with high blood pressure are "salt-sensitive" means any amount of salt added to more than the minimum body needs are too much for them and raises blood pressure. Other factors that may increase the risk of idiopathic hypertension such as obesity, diabetes, stress, not enough potassium, calcium and magnesium, lack of physical activity and alcohol.

The habit of eating salt increases the risk for high blood pressure

(2) Secondary Hypertension

Hypertension is known that the cause of the disease is called secondary hypertension. Among the known causes of secondary hypertension, renal disease accounted for the highest.

Hypertension can also be caused by aortic valve insufficiency, hyperthyroidism, tumors or other abnormalities cause the adrenal glands (small glands located on top of the kidneys) to secrete an excess of substances stimulation increases blood pressure.

Birth control pills, especially those containing estrogen drugs can increase blood pressure or blood vessels drugs, drug side effects to keep salt water ... These people are more likely to have secondary hypertension include:

• History of the families of people with high blood pressure
• Smoking
• The African American
• Pregnancy
• Women who take birth control pills
• People over 35 years old
• People who are overweight or obese
• Those sedentary
• People who drink alcohol excessively
• People who eat too many fatty foods or foods with too much salt
• People with sleep apnea