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) For example, normal blood pressure in adults should be less than 120/80 mm Hg. Doctors recommend that older teens with normal blood pressure get their High Blood Pressure (Hypertension) If an underlying illness is causing hypertension, treating that illness may be enough to get the blood pressure back to normal levels. High Blood Pressure For example, an infant may have a quite normal blood pressure of 80/45, while that value in an adult is considered low. A teenager may have an acceptable Inherited High Blood Pressure in a Teenager - High Blood Pressure The normal blood pressure in this age group is well under 140/90. Not yet willing to accept that this teenager had essential hypertension, Teenagers - Healthy Kids and Pediatrics - Information on Screen teenagers who have multiple risk factors for future cardiovascular disease (eg, smoking, high blood pressure, obesity, diabetes mellitus, Average Blood Pressure Levels On Rise Among American Children Systolic and diastolic blood pressure levels for children and teenagers have risen The new guidelines continue to define normal blood pressure as the Family Self-Care Handbook: Teen For example, a blood pressure measurement of 120/80 mm hg (millimeters of mercury) is expressed verbally as "120 over 80." Normal blood pressure is less High Blood Pressure In adolescents, normal blood pressure values are defined by gender, age and height. . Any teen with high blood pressure should quit smoking. MedlinePlus: High Blood Pressure 120/80 or lower is normal blood pressure; 140/90 or higher is high blood pressure . Return to top; Teenagers. Hypertension (High Blood Pressure)(Nemours High Blood Pressure and Your Teen They found that there was a linear increase -- from normal blood pressure to prehypertension to hypertension -- in the percentage of adolescents classified Health Leader, Guess Who Has High Blood Pressure? Normal blood pressure values are much lower in children than adults and gradually increase Heart Health Archive · Children & Teen Archive. Health Tip: Blood Pressure Levels Among Children/Teenagers, May 4, 2004 Press Average Blood Pressure Levels On Rise Among American Children/Teenagers The new guidelines continue to define normal blood pressure as the systolic and Health: Toddlers & Preschoolers - iVillage What is a Normal Blood Pressure for Your Child? . of your child through every age and stage: newborn, baby, toddler, grade school, tween and teen. Health: The Teen Years - iVillage Get expert advice and answers to the questions about your teen's health with informative articles What is a Normal Blood Pressure for Your Child? q&a BBC NEWS | Health | Teenage blood pressure risk clue Teenagers who cannot process insulin properly have a higher risk of high blood pressure, researchers find. Meditation Impacts Teen Blood Pressure - Heart1.com Meditation Impacts Teen Blood Pressure. April 02, 2004. ATLANTA (AP) - A study by the Medical College of Georgia found that two 15-minute meditation Common Misconceptions When kids reach the teen years, they should certainly have their pressure checked. According to research, teenagers with the highest blood pressure and High Blood Pressure in Teens - Causes of Adolescent Hypertension Learn about the causes of teenage high blood pressure and how to avoid it. Normal blood pressure - systolic and diastolic pressures <90th percentile Chlorthalidone heart medication - high blood pressure diuretics A normal blood pressure in a young person might be around 130/80 (often described as 130 Babies have lower blood pressure than teenagers and adults; |
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