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Heart disease is an umbrella term for a number of different diseases affecting the heart. As of 2007, it is the leading cause of death in the United States, England, Canada and Wales, killing one person every 34 seconds in the United States alone.
The blood vessels consist of arteries, arterioles, capillaries, venules, and veins. All blood is carried in these vessels. The arteries, which are strong, flexible, and resilient, carry blood away from the heart and bear the highest blood pressures. Because arteries are elastic, they narrow (recoil) passively when the heart is relaxing between beats and thus help maintain blood pressure. The arteries branch into smaller and smaller vessels, eventually becoming very small vessels called arterioles. Arteries and arterioles have muscular walls that can adjust their diameter to increase or decrease blood flow to a particular part of the body.
2008-05-06

Why Your Cholesterol Level Is Important to Good Health  

It is difficult to turn on the television or open a magazine to find without an ad on your lower cholesterol. " But many people really do not understand what cholesterol is, or why it is so important.

Cholesterol is a type of lipid or fat content. Your liver produces these waxy substance, and it is found in foods of animal origin, including meat, eggs, milk and full-fat dairy products. However, it is not in any plant-based foods such as cereals, fruits and vegetables.

The body uses cholesterol to produce vitamin D and certain hormones, and the creation of bile salts to aid in fat digestion, build and cellular walls. The liver produces all the body needs, and one that comes from the food is extra.

You May, the terms LDL and HDL or "good" and "bad" cholesterol. To navigate through the bloodstream, cholesterol must combine with proteins, they move from one place to another. This combination is as lipoprotein.

LDL and HDL lipoproteins. LDL stands for "low-density protein, and is often referred to as" bad ". HDL or "high-density protein," is as "good".

When your LDL levels are high, deposits building in the artery walls. These deposits form a hard coating called plaque. Over time, plaque narrows the arteries, arteriosclerosis, or hardening of the arteries. This increases the risk of heart attack and stroke, and can block blood flow to vital organs.

A high LDL level, several causal factors.

First, overweight people with a high probability graerer LDL. This is a serious problem because obesity also other risk factors such as high blood pressure pressure.

Elevated LDL problems and heart disease tend to intervene in families. If a member of your immediate family had high LDL and /or heart disease, the risk of developing these conditions is higher.

Diet, of course, plays in a huge all this. Avoid foods with high animal, saturated fat and trans fat can contribute to your low-density lipoprotein readings in line.

Exercise raises HDL levels, the likelihood of heart and Gefakrankheiten. Exercise also helps reduce obesity, helps reduce LDL levels further.

Article Source: http://EzineArticles.com/?expert=George_McKenzie

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