Monday, August 6, 2007

What Causes Hypertension?

Two forms of hypertension were described: essential hypertension (or primary education) and secondary hypertension. Essential hypertension is a condition much more common and explains 95% of hypertension. The cause of essential hypertension is multifactorielle, i.e., there are several factors of which combined the hypertension of product of effects. In the secondary hypertension, which explains 5% of hypertension, hypertension is secondary (caused near) with a specific anomaly in one of the bodies or the systems of the body. (Secondary hypertension is discussed further in a section separated below.) essential hypertension affects 75 million Americans roughly, however its basic causes or fundamental defects are not always known. Nevertheless, certain associations were identified in the people with essential hypertension. For example, essential hypertension develops only in the groups or the companies which have raised an enough salt catch, exceeding 5.8 grams of daily newspaper. In fact, the salt catch can be a particularly important factor compared to essential hypertension in several situations. Thus, of excessive salt can be implied in the hypertension which is associated the advancing age, at the African American bottom, obesity, susceptibility (genetic) hereditary, and with the failure of kidney (renal insufficiency). For additional information on hypertension and the mode, to see the article “of mode of INDENT”. One thinks of the genetic factors to play a part ahead in the development of essential hypertension. However, the genes for hypertension were not still identified. (The genes are the tiny parts of chromosomes which produces the proteins which determine the characteristics of the individuals.) current research in this sector is concentrated on the genetic factors which affect the system of renin-angiotensin-aldosterone. This system helps to regulate the blood pressure by ordering the salt balance and the tonality (state of elasticity) of the arteries. Roughly 30% of case of essential hypertension are ascribable to the genetic factors. For example, in the United States, the incidence of hypertension is larger among the African Americans than among Caucasians or the Asian ones. Moreover, in the individuals who have one or two parents with hypertension, hypertension is twice as communal ground as in the general population. Seldom, certain genetic disorders not very common affecting the hormones the glands adrenales can lead to hypertension. (These identified genetic disorders are really considered secondary hypertension.) the large majority of patients presenting essential hypertension in common have a particular anomaly of the arteries: an increased resistance (rigidity or lack of elasticity) in the tiny arteries which are furthest away from the heart (peripheral arteries or small arteries). Blood and the food oxygen-containers of offer of small arteries to all fabrics of the body. The small arteries are connected by capillaries in fabrics to the veins (the venous system), which returns blood in the middle and with the lungs. To the Juste what makes the peripheral arteries to become stiff is not known. However, this increased rigidity artériolaire peripheral is present in these individuals whose essential hypertension is associated the genetic factors, obesity, the lack of exercise, the abuse salt, and ageing. The ignition can also play a part in hypertension since a predictive factor of the development of hypertension is the presence of a high reactive protein level of C (a marker of analysis of blood of the ignition) in some individuals.