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The Cholesterol Myths by Uffe
Ravnskov, MD, PhD About the AuthorBorn 1934 in Copenhagen, Denmark Graduated 1961 from the University of Copenhagen with an M.D. 1961-1967 various appointments at surgical, roentgenological, neurological, pediatric and medical departments in Denmark and Sweden. 1968-79 various appointments at the Department of Nephrology, and the Department of Clinical Chemistry, University Hospital, Lund, Sweden; 1975-79 as an assistant professor at the Department of Nephrology. 1973 PhD at the University of Lund. 1979-2000 a private practitioner. Since 1979 an independent researcher. A specialist in internal medicine and nephrology. Honoured by the Skrabanek Award 1998.
Ravnskov, U. Lowering cholesterol concentrations and mortality. British Medical Journal 1990;301: 814. Ravnskov U. An elevated serum cholesterol is secondary, not causal, in coronary heart disease. Medical Hypotheses 1991;36:238-41. Ravnskov U. Atherogenicity and thrombogenicity indices. The Lancet 338, 1328, 1991. Ravnskov U. Cholesterol lowering trials in coronary heart disease: frequency of citation and outcome. British Medical Journal 1992;305: 15-19. Letters: British Medical Journal 1992;305:420-422, and 717. Ravnskov U. The fragile links of the diet-heart chain. Nutrition Quarterly 1992;16:19-21. Ravnskov U. Cardiovascular disease in developing countries. British Medical Journal 1993;306:145-6. Ravnskov U. Dietary fats and blood lipids as cardiovascular risk factors in the general population. A critical overview. Proceedings of the I. World Congress of Dairy Products in Human Health and Nutrition. Madrid 1993. Rotterdam: Balkema 1994, p 361-369. Ravnskov U. Reducing serum cholesterol. Lower cholesterol of doubtful benefit to anyone. British Medical Journal 1993;307:125. Ravnskov U. Coronary atherosclerosis on angiography-progress or regress and why? Circulation 1993;88:1358-9. Ravnskov U. Hypercholesterolemia does not cause coronary heart disease - evidence from the nephrotic syndrome. Nephron 1994;66:356-7. Ravnskov U. Ischaemic heart disease and cholesterol. Optimism about drug treatment is unjustified. British Medical Journal 1994;308:1038. Ravnskov U. Is there a cause-effect relationship between high blood cholesterol and atherosclerosis? Workshop on cholesterol-lowering trials. National Heart, Lung and Blood Institute, Bethesda 1994. Ravnskov U. What do angiographic changes after cholesterol lowering mean? The Lancet 1994;344:1297. Ravnskov U. Is intake of trans-fatty acids and saturated fat causal in coronary heart disease? Circulation 1994;90:2568-9. Ravnskov U. Doing the right thing: stop worrying about cholesterol. Circulation 1994;90:2572-3. Ravnskov U. Quotation bias in reviews of the diet-heart idea. Journal of Clinical Epidemiology 1995;48:713-719. Ravnskov U. Implications of 4S evidence on baseline lipid levels. The Lancet 1995;346:181. Ravnskov U. Beneficial effects of simvastatin may be due to non-lipid actions. British Medical Journal 1995;311:1436-1437. Ravnskov U. The questionable role of saturated and polyunsaturated fatty acids in cardiovascular disease. Journal of Clinical Epidemiology 1998;51:443-460. Read also a dissent to the paper: Golomb BA. Dietary fats and heart disease-dogma challenged? and my answer; same journal and same issue. This paper won the Skrabanek award 1998 Ravnskov U. Why heart disease mortality is low in France. Author´s hypothesis is wrong. British Medical Journal 1999;319:255 Ravnskov U. VAT and fat. Evidence is contradictory. British Medical Journal 2000;320:1470 Ravnskov U. Prevention of atherosclerosis in children. The Lancet 2000;355:69.
Ravnskov U. The Cholesterol Myths.
Washington:
New Trends Publishing, 2000; ISBN
0-9670897-0-0 Ravnskov U. Diet-heart disease hypothesis is wishful thinking. British Medical Journal 2002; 324: 238 Ravnskov U, Allan C, Atrens D, Enig MG, Groves B, Kaufman J, Kroneld R, Rosch PJ, Rosenman R, Werkö L, Nielsen JV, Wilske J, Worm N. Studies of dietary fat and heart disease. Science 2002; 295:1464-1465.
Papers and books in Swedish, Danish or Finnish about cholesterol and the diet-heart idea Ravnskov U. Är fleromättat fett nyttigt? Läkartidningen 1991;88:1058 Ravnskov U. Kolesterolmyten (The Cholesterol Myth). Stockholm : Streifferts, 1991; ISBN 91-7886-085-7. Ravnskov U. Kolesteroli. Helsinki : Art House, 1992 (Finnish translation of Kolesterolmyten); ISBN 951-884-078-4. Ravnskov U. Kolesterolmyten. Månedsskrift for praktisk Lægegerning 1991;70:131-138 Ravnskov U. Hvad er det rigtige svar i kolesteroldebatten? Ugeskrift for Læger 1992;154:1716 Ravnskov U. Kolesterol och hälsa: En titt under mattan. Livsmedelsteknik1992;4:7-8. Ravnskov U. Tveksamheter om kolesterol. Suomen Lääkarilehti 1993;48:1063-1064. Ravnskov U. Flera tveksamheter om kolesterol. Suomen Lääkarilehti 1993;48:1716-1717. Ravnskov U. Tvivlsomme råd om kolesterolscreening hos børn. Ugeskrift for Læger 1993;155:1886-1887. Ravnskov U. Nya tongånger från USA. Kolesterolkampanjen ifrågasättas. Läkartidningen 1993;90:2528-2529. Ravnskov U. Stoppa kolesterolkampanjen! Läkartidningen 1993;90:4587-4588. Ravnskov U. Slutreplik om kolesterol. Läkartidningen 1994;91:117-118 Ravnskov U. Livet forkortes når kolesterolet sænkes. Ugeskrift for Læger 1993;155:3678-3679. Ravnskov U. Kolesterolsænkende lægemidler. Ugeskrift for Læger 1994;156:329 Ravnskov U. Ukritisk referat af kolesterolartikler.Ugeskrift for Læger 1994;156:4479 Ravnskov U. Fedtsyrer og forvirrende signaler. Ugeskrift for Læger 1995;157:1534-1535. Ravnskov U. Keys eller kaos.Ugeskrift for Læger 1995;157:3210 Ravnskov U. Är fleromättat fett en orsak till manlig sterilitet? Läkartidningen 1996;93:2040 Ravnskov U. Auktoriteter kräver tolkningsföreträde. Läkartidningen 1997;95:1024-1025. Ravnskov U. Myten om det mättade och det fleromättade fettet. Tidskriften Medikament 1998;3(4):44-51 och 1998;3(5):48-53 Ravnskov U. "Medelhavsdietens" förträfflighet är en myt. Läkartidningen 1998;95:4749-4750. Ravnskov U. Är motion överlägsen statinbehandling? Läkartidningen 2000;97:2177 Ravnskov U. Varför blir kranskärl aterosklerotiska? Läkartidningen 2000; 98: 41 Ravnskov U. Nya intressanta fakta i Science och BMJ...Synen på matens fett håller på att förändras. Tidskriften Medikament 2001:5(4) Ravnskov U. Statinbehandling vid akut hjärtinfarkt väl optimistiskt refererat i massmedierna. Läkartidningen 2001;98:2370 Ravnskov U. Koständringar förebygger inte hjärtinfarkt. Läkartidningen 2001;98:3926 Ravnskov U. Transfettsyra-den verkliga kostboven vid hjärtinfarkt? Läkartidningen 2001;98:4060. Ravnskov U. Amerikansk kolesterol-policy kan leda till sjukförklaring av miljontals friska. Läkartidningen 2001;98:4574-4577. Ravnskov U. Lipidsänkning påverkar inte utvecklingen av ateroskleros vid benartärsjukdom. Läkartidningen 2001;98:4897-4898. Ravnskov U. Överoptimistiskt referat av ny statinstudie. Läkartidningen 2002;99:949-950 Ravnskov U. Ju färre måltider desto högre kolesterol. Läkartidningen 2002;99:1356.
Ravnskov U. Kolesterol är ofarligt.
Dagens Nyheter
(Stockholm) February 2, 1990.
A popularscientific review of my research on glomerulonephritis is available on http://www.ravnskov.nu/index.htm Ravnskov U. On renal handling of plasma proteins. Scandinavian Journal of Urology and Nephrology 1973;7 suppl 20. [Thesis] Ravnskov U, Johansson BG, Ljunger L. Proteinuria in pigs with experimentally induced renal damage. Contributions to Nephrology 1975;1:50-61. Ravnskov U, Karatson A. Renal handling of human ß2-microglobulin in the rat: The importance of sham-operation. Acta Physiologica Scandinavica 1975;94:467-471. Ravnskov U. Low molecular weight proteinuria in association with paroxysmal myoglobinuria. Clinical Nephrology 1975;3:65-69. Ekman R, Johansson BG, Ravnskov U. Renal handling of Zn alfa2-glycoprotein as compared with that of albumin and the retinol-binding protein. Journal of Clinical Investigation 1976;57:945-954. Ravnskov U, Johansson BG. Isolation and partial characterization of a porcine low molecular weight protein occurring in plasma and urine. International Journal of Biochemistry 1976;7:579-583. Hultberg B, Ravnskov U. The excretion of N-acetyl-ß-glucosaminidase in glomerulonephritis. Clinical Nephrology 1981;15:33-38. Ravnskov U. Soap is the major cause of dysuria. The Lancet 1, 1027-8,1983. Ravnskov U. Exposure to organic solvents - a missing link in acute poststreptococcal glomerulonephritis? Acta Medica Scandinavica 1978;203:351-356. Ravnskov U, Forsberg B, Skerfving S. Glomerulonephritis and hydrocarbon exposure - a case control study. Acta Medica Scandinavica 1979; 205:575-579. Ravnskov U, Lundström S, Nordén Å. Hydrocarbon exposure and glomerulonephritis: evidence from patients' occupations. The Lancet 1983;2:1214-16. Ravnskov U. Possible mechanisms of hydrocarbon-associated glomerulonephritis. Clinical Nephrology 1985;23:294-298. Ravnskov U. Influence of hydrocarbon exposure on the course of glomerulonephritis. Nephron 1986;42:156-160. Ravnskov U. Focal glomerular lesions in glomerulonephritis may be secondary to tubulointerstitial damage. American Journal of Kidney Diseases 1988;12:250-251. Ravnskov U. Non-systemic glomerulonephritis: Exposure to nephro- and immunotoxic chemicals is primary and predisposes to immunologic harassment. Medical Hypotheses 30, 115-122, 1989. Ravnskov U. The subepithelial formation of immune complexes in membranous glomerulonephritis may be harmless and secondary to allergic or toxic factors. Scandinavian Journal of Immunology 1998;48:469-474. Ravnskov U. Glomerular, tubular and interstitial nephritis associated with non-steroidal antiinflammatory drugs. Evidence of a common mechanism. British Journal of Clinical Pharmacology 1999;47:203-210. Ravnskov U. Hydrocarbons may worsen renal function in glomerulonephritis: a meta-analysis of the case-control studies. American Journal of Industrial Medicine 2000;37:599-606. Ravnskov U. Hydrocarbon exposure may cause glomerulonephritis and worsen renal function:evidence based on Hill´s criteria for causality. Quarterly Journal of Medicine 2000;93:551-556. Ravnskov U. Suicide of the nephron is preventable. The Lancet 2001;357 (May 12)
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© Uffe Ravnskov Revised December 8, 2001
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Editorial Reviews
All Customer Reviews
63 of 63 people found the following
review helpful: He is right that total cholesterol is a lousy indicator of heart disease. Many people with high cholesterol levels never get heart disease while many with what doctors consider "normal" or even low cholesterol die from heart attacks. The Framingham Study data shows that roughly 80% of people already diagnosed with heart disease have "normal" cholesterol levels. How can this be so? Obviously the standard lipid panel is a bad diagnostic. Dr. Ravnskov failed to discuss cholesterol subclasses, and I don't mean HDL and LDL. HDL (supposedly good) cholesterol and LDL (supposedly bad) cholesterol are also not great indicators of heart disease risk. But if we look at the hundreds of sub-particles that make up HDL and LDL, we get to some interesting stuff. Many studies have been performed that show that the sizes of the various subclasses of HDL and LDL are highly predictive of heart disease risk. Large particles of LDL are far less atherogenic than the smallest particles. Larger particles of HDL are far more effective at scrubbing arteries than smaller HDL particles. Size counts. But the standard lipid panel does not provide this information. Also, there are other blood lipids that have been shown to be very good risk indicators of heart attack and heart disease: lipoprotein (a), homocysteine, intermediate density lipoproteins, apolipoprotein B, apolipoprotein E4, etc. If Dr. Ravnskov does nothing else but get people to no longer trust standard lipid panels, he will have performed a great service. The standard lipid panel and total cholesterol numbers are just not effective diagnostics. As a medical author, my own personal crusade has been to inform doctors and patients that expanded cholesterol testing that shows the particle size of HDL and LDL is the only good indicator for diagnosing heart disease risk early on. It is also highly effective in monitoring the success of treatment. Unfortunately, most doctors are still unaware of expanded cholesterol testing or consider it something exotic. But it is hardly exotic when roughly 25% of the population carries the genetic predisposition for a deadly condition called atherogenic lipid profile which causes overproduction of the deadly small particles of LDL and underproduction of the beneficial large particles of HDL. If my cardiologist had been aware of
this testing five years ago, I probably
could have avoided my own near-fatal
heart attack....
45 of 46 people found the following
review helpful: “The truth, were it known, would send pharmaceutical stocks plunging. In most studies, the increased risk is present only above a level of cholesterol that includes just a small percentage of the total population. [These are the approximately 1% of people with a genetic defect called familial hypercholesteremia.] And women can stop worrying immediately because high cholesterol is not a risk factor for the female sex. Few comments have been made on this peculiar fact in all the vast literature on cholesterol. When it is mentioned at all, it is said that female sex hormones protect against heart attacks." “In fact, it seems more dangerous for women to have low cholesterol than high. Dr. Bernard Forette and a team of French researchers from Paris found that old women with very high cholesterol live the longest. The death rate was more than 5 times higher for women who had very low cholesterol. In their report, the French doctors warned against cholesterol lowering in elderly women. But they could as well have warned against cholesterol lowering in any woman, or, to be more precise, in anyone at all." Dr. Ravnskov went on to show that higher levels of high-density-lipoprotein (HDL, "good" cholesterol) are not protective against CHD, and that lower levels of low-density-lipoprotein (LDL,"bad" cholesterol) are not beneficial, although the expected associations of each with CHD are present. Here again, conclusions at odds with the researchersí own data were presented. Intimations that there are “many” or “definitive” studies in reports and papers were shown to be false by showing that citations often led to other reviews, each trusting the last, and ending at very few original studies. “High-fat foods raise blood cholesterol." Dr. Ancel Keys was one of the main proponents of this myth. In a paper published in 1958, Keys showed a graph of the per cent calories from fat in the food of various countries vs. the mean serum cholesterol levels. The data points fell on a straight line, showing an excellent correlation. Dr. Ravnskov added data points from a number of countries deliberately ignored by Dr. Keys. These fall nowhere near the line. Furthermore, CHD death rates among subjects in Finland, Greece and Yugoslavia with similar serum cholesterol levels varied 5-fold depending on which area of the country they lived in! Four studies in the US, one in the UK, one in Israel and one in Finland failed to show any correlation between diet and serum cholesterol levels. “Numerous studies have shown that in people who eat a normal Western diet, the effect on blood cholesterol of eating 2 or 3 extra eggs per day over a long period of time can hardly be measured..." Ravnskov presents the results of a number of trials of statin drugs in which total death rates are slightly lower than those of the controls. In an early trial of lovastatin (EXCEL) on 8,000 subjects the absolute death rate from all causes after just 1 year was 0.5% vs. 0.2% in the placebo group. Kilmer S. McCully, Ph. D., M. D., in technical papers and a book: “The Heart Revolution: the Extraordinary Discovery that Finally Laid the Cholesterol Myth to Rest”, Harper Perennial, 2000, wrote: “But no study anywhere has ever proven that lowering the amount of cholesterol in the diet reduces the risk of heart disease. And lowering cholesterol through drugs won’t prevent arteries from hardening if homocysteine is high.” McCully is the discoverer of the fact that the undesirable amino acid called homocysteine is an actual cause of atherosclerosis and CHD. Based on Ravnskov’s meticulous analyses as well as the considerable support for his stance shown by others who have also studied the cholesterol data, this book is recommended without reservation. Physicians and other health professionals as well as anyone threatened with cholesterol-lowering treatments would be enlightened, and better able to resist worthless treatments. Health insurers might reconsider compensation for frequent (or any) clinical assays for cholesterol or triglycerides, let alone expensive treatments to lower cholesterol levels that reduce quality of life without prolonging it significantly. ...
62 of 64 people found the following
review helpful: Ravnskov, a medical doctor with a PhD in Chemistry, has had over 40 papers and letters published in peer-reviewed journals criticizing what Dr. George Mann, formerly of Vanderbuilt University, once called "the greatest scam in the history of medicine": the Lipid Hypothesis of heart disease, the belief that dietary saturated fats and cholesterol clog arteries and cause atherosclerosis and heart disease. If one thing comes through as you read the book, it is this: Ravnskov has done his homework. In painstaking detail, he critically analyzes and demolishes the nine main myths of the Lipid Hypothesis: (1) High-fat foods cause heart disease, (2) High cholesterol causes heart disease, (3) High fat foods raise blood cholesterol, (4) Cholesterol blocks arteries, (5) Animal studies prove the diet-heart idea, (6) Lowering your cholesterol will lengthen your life, (7) Polyunsaturated oils are good for you, (8) The cholesterol campaign is based on good science, and (9) All scientists support the diet-heart idea. Equipped with a razor-sharp mind, an impressive command of the literature, and a deadly, needling sarcasm, Ravnskov methodically slaughters the most famous Sacred Cow of modern medicine and the most profitable Cash Cow for assorted pharmaceutical companies. Sparing no one, Ravnskov again and again presents the tenets of the Lipid Hypothesis and the studies which supposedly prove them, and shows how the studies are flawed or based on manipulated statistics that actually prove nothing. Ravnskov then answers the objections or rationalizations offered by diet-heart supporters, desperate to explain away inconsistencies and contradictions in their own data. For example, Ravnskov opens with an analysis of the study that kicked off the Lipid Hypothesis in the 1950s: Ancel Keys' Six Countries Study (and later, the more famous Seven Countries Study). As most health professionals know, Keys' study showed that countries with the highest animal fat intake have the highest rates of heart disease. Keys' conclusion was that there was a cause and effect relationship because the country with the lowest animal fat intake (at that time, Japan) had the lowest rates of heart disease. Sounds convincing, right? Not so, says Dr. Ravnskov. And in a few pages the reader is informed how Keys hand-picked the countries he included in his studies, namely, the ones that supported his hypothesis, and conveniently ignored all of the other countries that didn't. And this is just the beginning! Ravnskov approaches true brilliance in his review of the studies that supposedly showed benefit from the current wonder-drugs pushed by the pharmaceutical industry: the statins. Hailed as miracle substances that "significantly reduce cholesterol and incidence of heart attacks," Ravnskov shows that these substances are probable carcinogens (women on the drugs had a much higher incidence of breast cancer) and that the overall statistical reduction of heart disease in the drug trials is negligible. Nevertheless, despite the dismal results of the very first trial (the EXCEL Trial which Ravnskov soberingly describes to the reader), the industry and its well-funded doctors urge their use, even in people who do not have heart disease. Ravnskov warns: "Because the latent period between exposure to carcinogen and the incidence of clinical cancer in humans may be 20 years or more, the absence of any controlled trials of this duration means that we do not know whether statin treatment will lead to . . . cancer in coming decades. Thus, millions of people are being treated with medications the ultimate effects of which are not yet known." If there is one weakness of the book, it is its lack of explanations of what DOES cause heart disease. Ravnskov comes close to fingering a few factors such as high stress, excessive polyunsaturated fat intake, trans-fatty acids, and smoking, but he never offers his own theory as to what causes the Western world's number one killer. This is, however, a minor glitch.
Ravnskov has done the world a major
service in presenting his findings. All
health professionals need to listen to
this scholar and listen very carefully
for the advice offered by the medical
establishment for the last 50 years to
beat heart disease has failed miserably.
It is time to turn away from
cholesterol-lowering drugs that have
frightening side effects. It is time to
turn away from tasteless low-fat diets
that harm children and deprive people of
fat-soluble vitamins. And it is time to
turn away from the junk science that
characterizes the Lipid Hypothesis and
its supporters. It is time, instead, to
listen to reason and view all of the
evidence against a failed hypothesis and
discover the true and varied risks and
causes of heart disease. It is time to
listen to Uffe Ravnskov....
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