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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High Blood Pressure and Your Teen Teens with prehypertension or high blood pressure are more likely to have high blood pressure and its related complications when they grow up unless they High Blood Pressure Treating the primary disease process may lower the blood pressure. Teenage girls who take oral contraceptive pills may have a slight increase in their blood Average Blood Pressure Levels On Rise Among American Children Systolic and diastolic blood pressure levels for children and teenagers have risen substantially since 1988. 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 Meditation Impacts Teen Blood Pressure - Heart1.com A study by the Medical College of Georgia found that two 15-minute meditation sessions each day - once at home, the other at school - helped teenage Hypertension (High Blood Pressure) A doctor will average at least three blood pressure measurements taken at different times before determining that a teen has hypertension. High Blood Pressure (Hypertension) As kids grow, their blood pressure increases from a systolic pressure of about 70-90 in an infant to adult values in a teenager. 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, Inherited High Blood Pressure in a Teenager - High Blood Pressure Inherited High Blood Pressure In A Teenager. Essential (primary) hypertension, which is high blood pressure of unknown cause, generally develops in the 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 BBC NEWS | Health | Teenage blood pressure risk clue Teenagers who cannot process insulin properly have a higher risk of high blood pressure, researchers find. |
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