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 linked to dementia - Heart health- msnbc.com Elderly people with high blood pressure may be more likely to develop thinking and The researchers tracked 918 people in New York, average age 76, Medindia.net - Blood Pressure charts Medindia's simple tool alerts you if for your age your blood pressure is abnormal by displaying Average Blood Pressure For young people â“ 120/80 mmHg Blood Pressure Although the average blood pressure reading for adults is 120/80, the systolic number cuts down on strokes and heart attacks in people age 60 and over. NIH/NHLBI News Release--Average Blood Pressure Levels On Rise The mean age for both groups was just under 13 years. In 1988-94, the childrenâ™s average systolic blood pressure was 104.6 mm Hg and their average diastolic Low blood pressure They have an average blood pressure of 96/62 mmHg and this does not rise as they get Increasing age As you get older, your arteries stiffen and are less MODEST WEIGHT LOSS AND BLOOD PRESSURE CONTROL;IT REALLY DOES WORK lot overweight), average age 43 years, with an average systolic pressure of weight loss was greatest, the diastolic blood pressure fell, on average, High blood pressure (hypertension) There is a natural tendency for blood pressure to rise with age due to the . By treating hypertension well, complications can be avoided and average life Average Age of Menopause - Facing High Blood Pressure Articles Articles: Average Age of Menopause - Facing High Blood Pressure. Blood Vessels Some 'average' blood pressures relating to age. Parameters such as age, sex, and race influence blood pressure values. In Western societies, blood pressure High Blood Pressure Associated With Risk For Mild Cognitive Impairment High blood pressure appears to be associated with an increased risk for mild New York, followed 918 Medicare recipients age 65 and older (average age High blood pressure is a factor in some "senior moments" They recruited 59 volunteers, average age 60, with blood pressure readings below 140/90 mmHg, and 37 volunteers, average age 61, with hypertension, |
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