Sunday, January 10, 2010

High & Low Blood Pressure


Human body possesses closed system of blood circulation which means all the blood is within vessels. Vessels are largely of two types, 1. Arteries and 2. Veins Arteries are those vessels that carry blood from heart to supply whole the body and Veins are those that return all the blood from whole body back to the heart. In between Heart passes whole the blood from lungs so as to oxygenate it. In this way blood circulates in a closed system of vessels.
In order to push blood through the vessels Heart performs its function as a pumping device. Heart exerts a certain force upon an amount of blood at a time so that when blood ejects from it and passes through large vessels it is pressurized. The force exerted on the blood vessel by the heart pumping is known as blood pressure.
In certain individuals it is found that they have naturally a lowered or an elevated blood pressure. In most of cases nearly 90% cause of this problem is not known but in certain cases kidney problem is largely responsible for an elevated BP. Whereas depletion of body fluids as in diarrhea and vomiting of naturally decreased pumping effectiveness of heart may be responsible for a lowered blood pressure.
People who suffer from high blood pressure may suffer from headache, restlessness, tremors, blurring in vision, etc. They are advised to take plenty of fluids and vegetables and fruits and restrict salt, fatty diets, spicy foods, excess dairy products and meat of organs like brain, liver, kidney, etc 

Those people who are having low blood pressure may complain of headache, dizziness, vertigo, excess sleep, cold extremities, etc They should take plenty water, salty diets, fruit juices, and calcium supplements if advised by doctor.
High blood pressure, although does not have any lethal effects in short term but in long term it can kill a person. It may lead to kidney failure, heart attack, stroke, arteriosclerosis, etc
Low blood pressure may end up with circulatory failure, coma and death.
Low blood pressure is more dangerous than high blood pressure.

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