Tag Archives: cholesterol
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Current guidelines encourage ambitious long term cholesterol lowering with statins, in order to decrease cardiovascular disease events. However, by regulating the biosynthesis of cholesterol we potentially change the form and function of every cell membrane from the head to the toe. As research…
Nowhere is the impact of cholesterol depletion more keenly studied than in the neurologic arena.
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Cholesterol and insulin
Xia et al. inhibited a late step in the biosynthesis of de-novo cholesterol in murine and human pancreatic β cells [8] and published their findings in 2008. They had previously shown that insulin secretion was sensitive to the acute removal of membrane cholesterol. They now demonstrate that the depletion of membrane cholesterol impairs calcium voltage channels, insulin secretory granule creation, and mobilisation and membrane fusion.
This paper [8] clearly demonstrates that a direct causal link exists between membrane cholesterol depletion and the failure of insulin secretion. Their work is in close accord with data from some statin trials, which also connect cholesterol reduction with increased risk of type 2 diabetes; indeed, statin use has been shown to be associated with a rise of fasting plasma glucose in patients with and without diabetes [9]. The underlying mechanisms of the potential adverse effects of statins on carbohydrate homeostasis are complex [10] and might be related to the lipophilicity of the statin [11]. Indeed, retrospective analysis of the West of Scotland Coronary Prevention Study (WOSCOPS) revealed that 5 years of treatment with pravastatin reduced diabetes incidence by 30% [12]. The authors suggested that although lowering of trigliceride levels could have influenced diabetes incidence, other mechanisms such as anti-inflammatory action might have been involved; however, in the multivariate Cox model, baseline total cholesterol did not predict the development of diabetes [12]. Furthermore, pravastatin did not decrease diabetes incidence in the LIPID trial which included glucose-intolerant patients [13]. On the other hand, in the JUPITER trial (Justification for the Use of Statins in Prevention: an Intervention Trial Evaluating Rosuvastatin), which studied apparently healthy persons without hyperlipidemia but with elevated high-sensitivity C-reactive protein levels [14], the risk of diabetes was increased by a factor of 1.25 [95% confidence interval (CI), 1.05 to 1.51] among individuals receiving rosuvastatin 20 mg daily with respect to placebo. Strikingly, among persons assigned to rosuvastatin, the median low density lipoprotein (LDL) cholesterol level at 12 months was 55 mg per deciliter [interquartile range, 44 to 72 (1.1 to 1.9)].
It is intriguing that salutary lifestyle measures, which might exert their beneficial action through an anti-inflammatory mechanism without a strong cholesterol-lowering effect, beyond reducing cardiovascular events and total mortality, reduce also the risk of diabetes and other chronic degenerative diseases. This fact may represent a ‘justification’ not to use a drug in low-risk primary prevention populations: lowering cholesterol at the expense of increasing diabetes might be counter-productive over the long-term.
8. Xia F, Xie L, Mihic A, et al. Inhibition of cholesterol biosynthesis impairs insulin secretion and voltage-gated calcium channel function in pancreatic beta-cells. Endocrinology 2008; 149: 5136-45.
9. Sukhija R, Prayaga S, Marashdeh M, et al. Effect of statins on fasting plasma glucose in diabetic and nondiabetic patients. J Investig Med 2009; 57: 495-9.
10. Szendroedi J, Anderwald C, Krssak M, et al. Effects of high-dose simvastatin therapy on glucose metabolism and ectopic lipid deposition in nonobese type 2 diabetic patients. Diabetes Care 2009; 32: 209-14.
11. Ishikawa M, Okajima F, Inoue N, et al. Distinct effects of pravastatin, atorvastatin, and simvastatin on insulin secretion from a beta-cell line, MIN6 cells. J Atheroscler Thromb 2006; 13: 329-35.
12. Freeman DJ, Norrie J, Sattar N, et
Sugar-Damage in the Lipid Nutrition Cycle
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Maybe raised total blood serum cholesterol (TBSC) was trying to tell us something about health, but it was not the message we have been fed for the last 60 years.
Cholesterol has been misrepresented since the 1950s as a cause of heart disease. In reality an excess of dietary sugar that created an unhealthy lipid profiles in our blood stream. Attempts to fix the problem by a drug called a statin added to our health woes because it targets the wrong issue.
When LDL nutrition is sugar-damaged (Glycated LDL) is raised in the blood. Unrecognised by our fat starved organs it is eventually scavenged by less discriminating visceral fat stores. There is less HDL (erroneously called ‘good’ cholesterol) being returned by the organs.
High Cholesterol (high levels of total blood serum cholesterol TBSC) when caused by damage to the LDL lipid parcels is a sign that lipid circulation is broken. These fats (LDL) will be scavenged to become visceral fats, deposited around the abdomen. This type of damage is associated with poor health.

Preventing the liver from producing new undamaged LDL by using a statin fails to address the problem of getting fatty nutrients to fat starved organs. The action of statins adds to the patients musculo-skeletal and neurological woes by depleting vital supplies of CoQ10 and dolichol.
The problem is fixed by reducing sugar-damage – as measured by an HbA1c test on sugar damage to a blood protein called haemoglobin. Several diabetes clinicians have observed this key connection between sugar damage and poor lipid profiles.
A Healthy Lipid Nutrition Cycle

If the total blood serum cholesterol (TBSC) is high and the organs are getting enough lipids, the blood lipid circulation is healthy. The large parcels of fatty nutrients (LDL lipids) sent by the liver are consumed by our organs (receptor-mediated endocytosis) and the smaller fatty wrappers and left-over lipids (HDL Lipids) return to the liver. The Fatty Nutrients (LDL) and the recycled lipids (HDL) are in balance. Such a healthy-lipid ‘High-Cholesterol’ person is well nourished and likely to have a long and healthy life.
Sugar-Damage in a Broken Lipid Cycle

If the total blood serum cholesterol is high but the fatty nutrient droplets (LDLs) have sugar-damaged labels, the organs are unable to recognise and feed on them. The supply of fatty nutrients to organs is broken.
The liver continues to supply fatty nutrients (albeit with damaged LDL labels), but the organs’ receptors are unable to recognise them. The organs thus become starved of their fatty nutrients. Like badly labelled parcels in a postal service, the sugar-damaged lipids build up in the blood (raised LDL) and fewer empty wrappers are returned to the liver (low HDL).
So it really doesn’t matter how high your total blood serum cholesterol (TBSC) is. What really counts is the damaged condition of the blood’s fatty nutrient parcels (LDL lipids). In our research review of metabolic syndromes4 (e.g. diabetes, heart disease, obesity, arthritis and dementia) we explained that the major cause of lipid damage was sugar-related.
Sugar Damage (AGEs)
The abbreviation AGE (Advanced Glycation End-product) is used to describe any sugar-damaged protein. As we age, excessive amounts of free sugars in the blood5 may eventually cause damage quicker than the body can repair it. The sugars attach by a chemical reaction and the sugar called fructose is known to be 10 times more reactive, and therefore more dangerous than our normal blood sugar (glucose). Since the 1970s we have been using increasing quantities of refined fructose (from high-fructose corn syrup). Its appealing sweetness, and ability to suppress the ‘no longer hungry’ receptor6 (ghrelin receptor) is driving excessive food intake. Its ability to damage our fatty nutrients and lipid circulation is also driving waist-line obesity and its associated health problems4,7.
Checking for Damage in our Lipids
There is a ‘simple to administer’ commonly available blood test used to check for sugar-damage. It is used to check the proteins in the blood of people who are diabetic or at risk of becoming diabetic. It tests for Glycated Haemoglobin (HbA1c) by counting the proportion of damaged molecules (per 1000) of Haemoglobin protein in the blood (mmol/mol). Researchers looking at ways of testing for damage to lipids, have found that sugar-damaged blood protein test (HbA1c), presents a very reasonable approximation of the state of sugar-damage in the blood lipids. Until there is a good general test for sugar-damage in blood lipids, this test (HbA1c) could be a sensible surrogate. This is a better way of assessing health than a simple cholesterol test (TBSC).
Improved sugar-damaged blood protein (HbA1c) scores in diabetic patients is accompanied by improvements in their lipid profiles. This could be very useful to anyone wanting to improve health outcomes by managing lifestyle and nutrition.
For the full essay with references read follow this ‘bitly link’: http://bit.ly/1fkGYgb
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As experts clash over proposals that millions more of us take statins to prevent heart disease and stroke, a vascular surgeon explains why he feels better without them
You can also read my related essay on this link http://bit.ly/1fkGYgb
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Statins aren’t a wonder drug
http://www.theguardian.com/commentisfree/2014/mar/23/statins-not-wonder-drug-major-diseases
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The Paradox
For over 50 years this has been a paradox, the ‘High-Cholesterol Paradox’. What is really going on?

Hypothesis becomes Dogma

Let us explore some more big anomalies in the last 40 years of dietary health guidance.
Good Cholesterol? Bad Cholesterol? Spot the Difference?

Healthy Lipids

Damaged Lipids

Sugar Damage (AGEs)
Checking for Damage in our Lipids
Clinical Consequences of Lowering Cholesterol
Memories are made of this – Cholesterol
Consequences of Lowering Cholesterol
Our review12 found that cholesterol lowering therapies were implicated in:
· Damage to muscles (including the heart) and exercise intolerance13
· Increased risk of Dementias (Impaired Synaptogenesis and Neuro-transmission)14
· Failure of Myelin Maintenance (Multiple Sclerosis Risks)15
· Neuro-muscular problems, aches and pains (Amyotrophic Lateral Sclerosis)16
· Diabetes (Insulin release inhibited)8
· Poor Maintenance of Bones and Joints
· Suppression of protective skin secretions (Apo-B) and increased MRSA infection17
Why would anyone want to lower cholesterol?
What is needed is a lowering of damage to lipids – caused by sugar.
3. Yudkin, J. Pure, white and deadly: how sugar is killing us and what we can do to stop it. (2012).
The ‘High Cholesterol’ Paradox
Gallery
This gallery contains 3 photos.
1. A simplified representation of the lipid nutrition cycle for the brain.Receptor mediated LDL consumed by the organ and in the return cycle HDL conveys recycled cholesterol and fatty waste. 2. Sugar-damage on the LDL apolipoprotein labels. the receptor failsand … Continue reading


