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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Birth Weight Influences Blood Pressure Values and Variability in In conclusion, children who had lower birth weights tended to have not only the highest blood pressure values but also the highest blood pressure HealthDay One of the biggest reasons that hypertension is missed in children is that normal blood pressure values change based on a child's age, gender and height. Blood Pressure in Children with Obstructive Sleep Apnea -- MARCUS Oscillometric twenty-four-hour ambulatory blood pressure values in healthy children and adolescents: a multicenter trial including 1141 subjects. Health Survey for England Although less is known about the distribution of blood pressure in children than in adults, ample evidence now supports the idea that the roots of essential Blood pressure levels in children Blood pressure levels have been measured in children (aged 5- 15 years) since Microsoft Excel Sheet - Mean systolic blood pressure in children (5-15 || DukeMedNews || Duke Health Brief: Blood Pressure Screening "Blood pressure values for children depend on their age, gender and height. Because blood pressure actually increases with age, this also helps to avoid High Blood Pressure in Children and Adolescents - Lucile Packard Generally, blood pressure is low in infancy, and rises slowly as children age. Boys' blood pressures are slightly higher than girls' are, and taller people Normal Blood Pressure Rate in Children - What is the normal blood It is good to be asking about normal blood pressure values for children because In children, blood pressure and heart rate (how many times the heart is News - High Blood Pressure Often Missed in Kids It's not something most parents think about when it comes to their children's health â” high blood pressure (or hypertension) seems like a condition that High Blood Pressure (Hypertension) In children, high blood pressure is defined as a blood pressure greater than the 95th percentile for their age, height, and gender (in other words, Blood pressure Normal values for blood pressure change with age and are closely related to height and weight. Normal blood pressure values for children are lower than |
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