As discussed earlier, the constriction of the small arteries or arterioles is in fact one of the fundamental mechanisms of hypertension. Even in a healthy person’s bodily function, there is still constriction of the small arteries or arterioles during when someone is in a frightening or worrying or high spirits situation and heavy workout.
On the other hand, although a person who is suffering from hypertension does not show any sign of high spirits or pressure, his or her arterioles or arteries are still not constricted in proper orders or functions.
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Hypertension is defined simply as abnormally high arterial blood pressure. The other factor to examine is the stiffness of the arterial walls. An explanation for this is if the arteries constrict and then the stiffness increased, this means the heart must exert a higher pressure to push blood via the arteries so that normal blood flow to the vital organs can be sustained. Subsequently, the person is considered to have hypertension as his stiffness becomes higher or in other words, constriction of arteries.
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What is cholesterol?
Cholesterol is a chemical compound with a combination of lipid (fat) and steroids. About 75-80% of cholesterol in the body is produced by the liver. The other 20-25 % comes from the foods of animal origin like meat, poultry, fish, eggs and dairy products.
Cholesterol is required to form the cell membranes. It also helps the liver to produce bile acids which necessary for digestion of fats and the absorption of fat-soluble vitamins (Vitamin A, D, E, and K). Besides that, cholesterol is used to manufacture vitamin D and steroids hormones such as sex hormones.
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