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 Hot Tubs (Saunas) Hot tubs and saunas -- if not misused -- pose no risk to healthy people. Hot Tubs and High Blood Pressure Hot tubs and saunas pose no risk to healthy people -- if not misused. People with high blood pressure (hypertension) who have no symptoms should tolerate Epinions.com - What You Should Know About Hot Tub Temperature Control Review on Setting the Temperature on Your Hot Tub (October 24, 2001) This will aid in your blood circulation and lower your blood pressure. Diabetes Monitor - hot tubs After writing this article, several correspondents have told me that people with hypertension (high blood pressure) should not use hot tubs. Telling the truth about high blood pressure! Unlike the water pressure in the hot tub, however, human blood pressure is highly variable. In the hot tub, the water ejected by the jets comes in a steady, Hot Tub & Spa Safety Tips, Information & avoiding entrapment Persons with heart disease, diabetes, high or low blood pressure, or any other serious illness should not enter a spa or hot tub without first consulting The Hot Tub Mystery: The Story of a Very HOT Tub - Case Teaching It might be used at the end of the unit on blood pressure regulation or at the end of the . âœWhat You Should Know About Hot Tub Temperature Control. Hot Tubs - The Oasis Hot Tub Gardens Elderly persons and those suffering from heart disease, diabetes, high or low blood pressure and those on medication should not use hot tubs. What happens to my blood pressure in a hot tub, doctor? - Press What better way to relax after a stressful day than to slip into a soothing hot tub? Are hot tubs safe for people with treated hypertension? -- Shin et We compared symptoms, heart rate, and systolic and diastolic blood pressure in response to 10 minutes of hot-tub immersion in a group of patients with Are hot tubs safe for people with treated hypertension? lar in Canada and other temperate countries. Most public facilities with hot tubs post a sign. stating that people with high blood pressure (or other med- |
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