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) Most teens will have their blood pressure checked during an annual physical exam. Doctors recommend that older teens with normal blood pressure get their Average Blood Pressure Levels On Rise Among American Children The new guidelines continue to define normal blood pressure as the systolic Survey Reveals Importance Of Setting Limits Among Current Parents Of Teens Child Blood Pressure - DrGreene.com - caring for the next generation Dr. Greene talks about the normal range of childs blood pressure. Teen Health, Women's Health, Workplace Health, Family Self-Care Handbook: Teen Changing Bodies, Changing Needs: Teens, Ages 13 to 19 · Woman to Woman: Women, Ages 20 to 45 . Normal blood pressure is less than 120/80. 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. High Blood Pressure and Your Teen Teens with prehypertension or high blood pressure are more likely to have high from normal blood pressure to prehypertension to hypertension -- in the 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 Leader, Guess Who Has High Blood Pressure? Normal blood pressure values are much lower in children than adults and and teens who smoke should quit to reduce their risk for high blood pressure, Hypertension In Teens - 7 Ways To Avoid It Can teens suffer from high blood pressure? No way! High blood pressure is just Keeping a normal blood pressure is very important to you and your kids' High Blood Pressure On Rise Among Teens - Connecting With Kids A second study on teen blood pressure looks at the effect of caffeine on blood pressure levels in African-Americans, reported Strong. Transcendental Meditation lowers blood pressure in black adolescents A study of 156 inner-city black adolescents in Augusta, Ga., with high-normal pressure showed that teens who practiced 15 minutes of transcendental |
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