What is Cholesterol?Cholesterol is a sterol (a combination steroid and alcohol). Cholesterol is a lipid found in the cell membranes of all tissues, and it is transported in the blood plasma of all animals. Because cholesterol is synthesized by all eukaryotes, trace amounts of cholesterol are also found in membranes of plants and fungi.The name originates from the Greek chole- (bile) and stereos (solid), and the chemical suffix -ol for an alcohol, as researchers first identified cholesterol in solid form in gallstones by Francois Poulletier de la Salle in 1769. However, it is only in 1815 that chemist Eugene Chevreul named the compound "cholesterine".[2]Most of the cholesterol is synthesized by the body and some has dietary origin. Cholesterol is more abundant in tissues which either synthesize more or have more abundant densely-packed membranes, for example, the liver, spinal cord and brain. It plays a central role in many biochemical processes, such as the composition of cell membranes and the synthesis of steroid hormones. Cholesterol is insoluble in blood, but is transported in the circulatory system bound to one of the varieties of lipoprotein, spherical particles which have an exterior composed mainly of water-soluble proteins. The main types, low-density lipoprotein (LDL) and high-density lipoprotein (HDL) carry cholesterol from and to the liver.According to the lipid hypothesis, abnormally high cholesterol levels (hypercholesterolemia) and abnormal proportions of LDL and HDL are associated with cardiovascular disease by promoting atheroma development in arteries (atherosclerosis). This disease process leads to myocardial infarction (heart attack), stroke and peripheral vascular disease. As high LDL contributes to this process, it is termed "bad cholesterol", while high levels of HDL ("good cholesterol") offer a degree of protection. The balance can be redressed with exercise, a healthy diet, and sometimes medication. |
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Hypertension (High Blood Pressure) A borderline high systolic pressure of 120 to 139 or a diastolic pressure of 80 to 89 needs to be closely monitored. A blood pressure reading equal to or Hypertension: High Blood Pressure Symptoms and Blood Pressure There are no high blood pressure symptoms, which is why hypertension is called the silent killer. Find out how to better understand blood pressure readings Adult Health Advisor 2005.4: Blood Pressure For example, in the blood pressure reading of 120/80, 120 is the systolic pressure (the Stage I high blood pressure ranges from 140/90 to 159/99. Blood Pressure Log and Chart Record, Track, and Chart your blood pressure readings online with our free journal. BPlog is dedicated to helping you manage high blood pressure. High Blood Pressure (Hypertension) - Texas Heart Institute Heart Most doctors do not make a final diagnosis of high blood pressure until they measure your blood pressure several times (at least 2 blood pressure readings What Is Normal Blood Pressure? If your doctor says you have a high blood pressure reading the first time, don't panic. Blood pressure can vary due to exercise or your body's response to High Blood Pressure - Things you can do to help lower yours High blood pressure (hypertension) occurs when your blood moves through A blood pressure reading of more than 140 over 90 (or 160 over 90 if you are The Kidney Foundation - High Blood Pressure & Your Kidneys High blood pressure is also called hypertension. It is defined as blood pressure readings greater than 140/90 mm Hg*. In people with diabetes, AMNews: Aug. 16, 2004. Doctors warned on single high blood Doctors warned on single high blood pressure reading. Research finds that one high measurement should be impetus to "ramp up" blood pressure control. Measuring Blood Pressure, what the numbers mean. If your blood pressure is on the high side of 'normal' (between 130/85 and 139/89 mmHg) or if you have had a previous high reading at anytime before, Blood Pressure Testing and Measurement The only way to find out if you have high blood pressure is to have your blood A typical blood pressure reading for an adult might be 118/78 mm Hg, High blood pressure (hypertension) A typical normal blood pressure reading would be 120/80 mmHg. What's classed as high? There is a natural tendency for blood pressure to rise with age due to Blood Pressure Readings Slightly higher readings---140 to 159 and 90 to 94---are considered mild high blood pressure (mild hypertension). Readings from 160 to 179 and 94 to 114 Blood Pressure A single elevated blood pressure reading doesn't mean you have high blood pressure, but it's a sign that further observation is required. Healthy Hearts: Hypertension/High Blood Pressure - The Human Heart There is no "ideal" blood pressure reading. However, there is a range of for an extended period of time, you have high blood pressure, or hypertension. Blood Pressure Monitoring at Home -- familydoctor.org What does my blood pressure reading mean? Normal blood pressure is 120/80 or lower. High blood pressure is 140/90 or higher. If your blood pressure is High Blood Pressure (Hypertension) - Patient UK A one-off blood pressure reading that is high does not mean that you have 'high blood pressure'. Your blood pressure varies throughout the day. What Are High Blood Pressure and Prehypertension? Systolic pressure is the force of blood in the arteries as the heart beats. It is shown as the top number in a blood pressure reading. High blood pressure What Is High Blood Pressure? If you are being treated for high blood pressure and have repeated readings in the normal range, you still have high blood pressure. |
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