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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MedlinePlus Medical Encyclopedia: Blood pressure If your blood pressure is 120/80, you say that it is "120 over 80." A blood pressure of 140/90 or higher is considered high blood pressure. What is blood pressure? For example, if you have a systolic pressure of 130mmHg and a diastolic pressure of 70mmHg, they will usually say that your blood pressure is '130 over 70'. Food Standards Agency - Eat well, be well - Blood pressure JNC VII also found that in people over the age of 50, systolic blood pressure (BP) of more than 140 mmHg is a much more important cardiovascular disease Hypertension, Part One: A Patient Guide A "text" book blood pressure is 120-130 over 70-80. I think your pressure is fine. I have never seen an MD start a B?P medicine on anyone with a 140/70 B/P. If the blood pressure is 140 over 70, is it hypertension? - Yahoo This is said as systolic pressure (eg, 120) over diastolic pressure (eg, 70) (see "Introduction" above). Blood pressure normally changes over a person's UpToDate Patient information: High blood pressure overview Blood pressure is recorded as two figures. For example, 140 over 90 which suggests you may have hypertension, normal is 110 over 70. Medical Discovery News Recent expert guidelines on redefining high blood pressure categorize 45 million limit is now usually considered to be 140/90, even for people over 70. Do You Have a Good Blood Pressure? 6/21/03 But when reporting a high blood pressure reaading verbally, like when you have discussions with your doctor, you say "120 over 70". If it's 140/90mmHg, Understanding the meaning of your high blood pressure reading 170/90 for a 70 year old, etc. As long as your diastolic pressure was OK they . If your blood pressure is over 140/90 on 3 consecutive visits he is Bishyp7iHt If during this period they did not achieve goal blood pressure (< 140/90 mmHg, Over 70% of patients achieved blood pressure control in all of the |
| blood pressure 140 over 70 |
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