High Blood Pressure

Gene linked to low IQ

(Medical Xpress)—Children with both a common gene variant and lower thyroid hormone levels, which occurs in approximately 4% of the population, are four times more likely to have a low IQ, according to ...

Mar 25, 2014
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Bread, cereal drive UK children's high salt diet

Children in London eat an unhealthy amount of salt on a daily basis—with much of it coming from breads and cereals, according to new research in the American Heart Association journal Hypertension.

Mar 10, 2014
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Couch potato? It could be genetic

(Medical Xpress)—Scientists in China and Aberdeen have made a key discovery which could explain why some people are 'couch potatoes'.

Feb 14, 2014
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'Beige' cells key to healthy fat

"Beige fat" cells found in healthy subcutaneous fat in mice play a critical role in protecting the body from the disease risks of obesity, report researchers at Dana-Farber Cancer Institute, who say their ...

Jan 17, 2014
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Immune cells may heal an injured heart

The immune system plays an important role in the heart's response to injury. But until recently, confusing data made it difficult to distinguish the immune factors that encourage the heart to heal following ...

Jan 16, 2014
popularity 5 / 5 (7) | comments 0 | with audio podcast

Hypertension (HTN) or high blood pressure, sometimes arterial hypertension, is a chronic medical condition in which the blood pressure in the arteries is elevated. This requires the heart to work harder than normal to circulate blood through the blood vessels. Blood pressure involves two measurements, systolic and diastolic, which depend on whether the heart muscle is contracting (systole) or relaxed (diastole) between beats. Normal blood pressure is at or below 120/80 mmHg. High blood pressure is said to be present if it is persistently at or above 140/90 mmHg.

Hypertension is classified as either primary (essential) hypertension or secondary hypertension; about 90–95% of cases are categorized as "primary hypertension" which means high blood pressure with no obvious underlying medical cause. The remaining 5–10% of cases (secondary hypertension) are caused by other conditions that affect the kidneys, arteries, heart or endocrine system.

Hypertension is a major risk factor for stroke, myocardial infarction (heart attacks), heart failure, aneurysms of the arteries (e.g. aortic aneurysm), peripheral arterial disease and is a cause of chronic kidney disease. Even moderate elevation of arterial blood pressure is associated with a shortened life expectancy. Dietary and lifestyle changes can improve blood pressure control and decrease the risk of associated health complications, although drug treatment is often necessary in patients for whom lifestyle changes prove ineffective or insufficient.

This text uses material from Wikipedia licensed under CC BY-SA

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