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Cholesterol is a lipidic, waxy alcohol found in the cell membranes and transported in the blood plasma of all animals. It is an essential component of mammalian cell membranes where it is required to establish proper membrane permeability and fluidity. Cholesterol is the principal sterol synthesized by animals, but small quantities are synthesized in other eukaryotes, such as plants and fungi. It is almost completely absent among prokaryotes, which include bacteria. Cholesterol is classified as a sterol (a portmanteau of steroid and alcohol).

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Cholesterol Blog

Cholesterol Blog. By Jennifer Moll, About.com Guide to Cholesterol since 2004. My Bio ... Recent Blog Posts. Keeping Your Cholesterol In Check While Traveling ...cholesterol.about.com/b/

High Cholesterol - How To Lower High Cholesterol Blog

Do you have high cholesterol or are wanting to prevent high cholesterol? This site will help you to lower your high cholesterol levels. Blogcholesterol.about.com/b/?p=1

Good Cholesterol Blog | High Cholesterol Symptoms | Low Calorie Food

Best Info You Can Find About Good Cholesterol, Understanding Symptoms Of High Cholesterol Level, Tips And Advice For Lowering Cholesterol.www.goodcholesterolblog.com/

Cholesterol Management 101

The leading source for trustworthy and timely health and medical news and information. ... I have posted previously on this blog about ezetimbe (Zetia) ...blogs.webmd.com/cholesterol-management/

Cholesterol Blog

The Cholesterol Blog posts all of the latest updates to the Lower Cholesterol Today website. ... subscribe to my Cholesterol Blog (no e-mail necessary), right ...www.lower-cholesterol-today.com/lower-cholesterol-blog.html

Wikipedia About Cholesterol

Adamantinomatous%20craniopharyngioma.jpg

Cholesterol is a lipidic, waxy alcohol found in the cell membranes and transported in the blood plasma of all animals. It is an essential component of mammalian cell membranes where it is required to establish proper membrane permeability and fluidity. Cholesterol is the principal sterol synthesized by animals, but small quantities are synthesized in other eukaryotes, such as plants and fungi. It is almost completely absent among prokaryotes, which include bacteria. Cholesterol is classified as a sterol (a portmanteau of steroid and alcohol).

Although cholesterol is essential for life, high levels in circulation are associated with atherosclerosis. Cholesterol can be ingested in the diet, recycled within the body through reabsorption of bile in the digestive tract, and produced de novo. For a person of about , typical total body cholesterol content is about 35 g, typical daily dietary intake is 200–300 mg in the United States and societies with similar dietary patterns and 1 g per day is synthesized de novo.

The name cholesterol originates from the Greek chole- (bile) and stereos (solid), and the chemical suffix -ol for an alcohol, as François Poulletier de la Salle first identified cholesterol in solid form in gallstones, in 1769. However, it was only in 1815 that chemist Eugène Chevreul named the compound "cholesterine".

Function

Cholesterol is required to build and maintain cell membranes; it regulates membrane fluidity over the range of physiological temperatures. The hydroxyl group on cholesterol interacts with the polar head groups of the membrane phospholipids and sphingolipids, while the bulky steroid and the hydrocarbon chain are embedded in the membrane, alongside the nonpolar fatty acid chain of the other lipids. In this structural role, cholesterol reduces the permeability of the plasma membrane to protons (positive hydrogen ions) and sodium ions.

Within the cell membrane, cholesterol also functions in intracellular transport, cell signalling and nerve conduction. Cholesterol is essential for the structure and function of invaginated caveolae and clathrin-coated pits, including caveola-dependent and clathrin-dependent endocytosis. The role of cholesterol in such endocytosis can be investigated by using methyl beta cyclodextrin (MβCD) to remove cholesterol from the plasma membrane. Recently, cholesterol has also been implicated in cell signaling processes, assisting in the formation of lipid rafts in the plasma membrane. In many neurons a myelin sheath, rich in cholesterol since it is derived from compacted layers of Schwann cell membrane, provides insulation for more efficient conduction of impulses.

Search results for Cholesterol

Cholesterol Management Health Center - WebMD

Explains cholesterol, what the numbers mean, provides tips for boosting good cholesterol, and related articles.www.webmd.com/cholesterol-management/

How Cholesterol Works - HowStuffWorks

Provides information on different types of cholesterol and how they affect the cardiovascular system. From Howstuffworks.www.howstuffworks.com/cholesterol.htm

The Cholesterol Myths

Focusing on the relationship between cholesterol and heart disease.www.ravnskov.nu/cholesterol.htm

Live Healthier, Live Longer - Information on The ATP III Update

Explains the link between cholesterol and coronary heart disease and provides tips for lowering personal cholesterol levels. From the National Heart, Lung, and Blood Institute.www.nhlbi.nih.gov/chd/

Cholesterol and the Heart - MedicineNet

Contains articles and advice written by doctors about cholesterol and heart attack prevention.www.medicinenet.com/cholesterol/article.htm

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News about Cholesterol

Wife needs to trim her cholesterol

The Scranton Times-TribuneQ: My wife’s blood workup returned from the lab with a diagnosis of hyperlipidemia. Is this a serious condition?http://www.thetimes-tribune.com/articles/2009/05/10/news/hea...

Aurobindo gets nod for Simvastatin tablets

The HinduMUMBAI: Drug maker Aurobindo Pharma on Monday said it has received Australian regulatory nod for registration of Simvastatin tablets, used in the treatment of high cholesterol.http://www.thehindubusinessline.com/businessline/blnus/02111...

Junk food children 'eating themselves into an early grave'

China DailyBritish children are 'eating themselves into an early grave', a leading obesity expert has warned. Calling for a 'fat tax' on unhealthy foods, Dr Tim Lobstein said that hundreds of thousands were suffering from liver disease, high blood pressure and high cholesterol while still in primary school.http://www.chinadaily.com.cn/life/2009-05/11/content_7764092...

THE DOCTOR IS IN: Inflammation may indicate increased heart risk

Suburban JournalsI've written many times about the importance of a healthy diet and regular exercise to maintain a healthy heart, and most people know high cholesterol and blood pressure are risk factors for cardiovascular disease. However, physicians and researchers have been paying attention to another potential risk factor: C-reactive protein (CRP).http://suburbanjournals.stltoday.com/articles/2009/05/11/stc...

Aurobindo gets Australian govt nod for Simvastatin tablets

New KeralaNew Delhi, May 11 : Aurobindo Pharma Ltd today said its wholly-owned subsidiary has received Australian regulatory nod for registration of Simvastatin tablets, used for the treatment of high cholesterol.http://www.newkerala.com/nkfullnews-1-36107.html

News about Cholesterol

One in every 100 newborns has heart ailment, say experts

Thaindian.comProblems related to blood pressure, cholesterol level and diabetes have started surfacing at very young age; so we need to be doubly cautious. Everyone has to get his first lipid test done at the age of 20 and then after every 4-5 years; this test is ... http://www.thaindian.com/newsportal/entertainment/one-in-eve...

On Native Ground

American ReporterI don't know how many burgers a slaughtered moose can provide, but I suspect that if she, her family, and all of their friends ate all of the moose she killed, the cholesterol and obesity levels in Wasilla, Alaska, would be significantly higher ... http://www.american-reporter.com/3,531/19.html

We compare pancake mixes

Miami HeraldNutrition (per 3 pancakes): 200 calories, 4 g fat (6 percent daily value), 0.5 g saturated (2 percent), 0 g trans fat, 40 mg cholesterol (13 percent), 430 mg sodium (18 percent), less than 1 g fiber. The verdict: There was a noticeable difference in ... http://www.miamiherald.com/living/story/715647.html

Talking America

bbcIt's easy to pontificate about obesity and diet, but it's even simpler to succumb to fatty, salty, high-cholesterol temptation. Whenever foreigners want to vent their displeasure at the American Way, they tend to take it out on burger chains - whether ... http://www.bbc.co.uk/go/rss/-/blogs/talkingamerica/2008/10/f...

Insure.com: No Better Time to Buy Life Insurance to Protect Your ...

MSN MoneyCentralCholesterol. Almost every life insurer we track allows their best rates even if you receive treatment for elevated cholesterol, so long as your HDL ratio and total cholesterol levels are within range of their limits. -- Blood Pressure. Today, many ... http://news.moneycentral.msn.com/provider/providerarticle.as...

Search results for Cholesterol

Cholesterol Information, Lowering High Cholesterol Levels, Diets ...

Find information on cholesterol and lipids, and learn the causes and treatments for high cholesterol. Get information on HLD, LDL, and VLDL.http://www.healthcentral.com/cholesterol/

NHLBI, High Blood Cholesterol: What You Need to Know

Why Is Cholesterol Important? Your blood cholesterol level has a lot to do with your chances of getting heart disease. High blood cholesterol is one of the major risk factors for ... http://www.nhlbi.nih.gov/health/public/heart/chol/wyntk.htm

cholesterol definition |Dictionary.com

Sponsored Links Cholesterol Information Visit LIPITOR.com to learn about ways to lower your cholesterol. www.LIPITOR.comhttp://dictionary.reference.com/browse/cholesterol

WebMD Cholesterol Center: Symptoms, Tests, Causes, Treatments, and ...

High cholesterol affects 42 million Americans, and 63 million more have borderline high cholesterol. Here you'll find in-depth cholesterol information including cholesterol ... http://www.webmd.com/cholesterol-management/default.htm

Cholesterol information from YourTotalHealth.com

Information on cholesterol and its importance to your health at iVillage Total Health ... Cholesterol is a blood fat needed by the body in moderate amounts. However, high ... http://yourtotalhealth.ivillage.com/cholesterol
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New Study Shows Walnuts Lower Cholesterol More Than Fish(April 13, 2009) - Loma Linda University research just published in the American Journal of Clinical Nutrition compares the effects of walnuts and fatty fish in the fight against...Flash - Video

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How to Make Cholesterol Free SmoothiesIf you love drinking something sweet and cold, smoothies are the best thing to go with. However, if you have high cholesterol, this is dangerous territory. Learn how you can enjoy...Flash - Video

Cholesterol Absorbing Machine

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Answers for Cholesterol

♥ aNimAL LoVEr ♥Cholesterol?♥ aNimAL LoVEr ♥You only find the bad cholesterol in animal fat. So that's meat, eggs and milk. If you're a veggie eating a lot of the last two, then you can still have a cholesterol problem (although it's less likel...Hi, I'm TonyWhen should I start worrying about my cholesterol?Hi, I'm TonyHigh Cholesterol levels are often genetic. If either of your parents have elevated Cholesterol levels, then it may not be a bad idea (the next time you have blood-work) to have a base-line cholesterol...LishaWhat are some good cholesterol lowering foods? Know of any good recipes that are good for you for meals?LishaI had the same problem. I use shaklee cholesterol regulation complex. It's a natural food supplement and I take it with my meals. My good cholesterol is 130 and I think the range is between 45 and 65,...Ya Umm!High cholesterol, when do you have to start taking medication?Ya Umm!Its not bad... and definitely not bad enough to take medication. I am not a doctor but I am a natural health nut who has family with high cholesterol and I watch this stuff closely. Medication is ...JessHow much Cholesterol should you be taking in every day?JessOfficially, experts say you shouldn't have over 300mg (based on a 2,000 calorie diet). I tend to think that's a little high and try to not go over half that. It really depends on your age and activity...
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