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Alzheimer's disease: The detrimental role of a high carbohydrate diet

Posted 02-24-2011 at 02:58 PM by Ted_Hutchinson

Nutrition and Alzheimer's disease: The detrimental role of a high carbohydrate diet
Quote:
Alzheimer's disease is a devastating disease whose recent increase in incidence rates has broad implications
for rising health care costs.
Huge amounts of research money are currently being invested in seeking the
underlying cause, with corresponding progress in understanding the disease progression.
In this paper, we highlight how an excess of dietary carbohydrates, particularly fructose, alongside a relative deficiency in dietary fats and cholesterol, may lead to the development of Alzheimer's disease.
A first step in the pathophysiology of the disease is represented by advanced glycation end-products in crucial plasma proteins concerned with fat, cholesterol, and oxygen transport.

This leads to cholesterol deficiency in neurons, which significantly impairs their ability to function.
Over time, a cascade response leads to impaired glutamate signaling, increased oxidative damage, mitochondrial and lysosomal dysfunction, increased risk to microbial infection, and, ultimately, apoptosis.
Other neurodegenerative diseases share many properties with Alzheimer's disease, and may also be due in large part to this same underlying cause
The text appears to be free from the above link (it may be worth right click and save as to your PC documents as sometimes if they become popular they start making you pay)

For those who find reading full text papers difficult (why don't they use words more easily understood) they provide this useful summary of the main points.
Quote:
Learning points
1. The amyloid-β present in Alzheimer's plaque may not be causal, since drug induced suppression of its synthesis led to further cognitive decline in the controlled studies performed so far.

2• Researchers have identified mitochondrial dysfunction and brain insulin resistance as early indicators of Alzheimer's disease.

3• ApoE-4 is a risk factor for Alzheimer's disease, and ApoE is involved in the transport of cholesterol and fats, which are essential for signal transduction and protection from oxidative damage.

4• The cerebrospinal fluid of Alzheimer's brains is deficient in fats and cholesterol.

5• Advanced glycation end-products (AGEs) are present in significant amounts in Alzheimer's brains.

6• Fructose, an increasingly pervasive sweetening agent, is ten times as reactive as glucose in inducing AGEs.

7• Astrocytes play an important role in providing fat and cholesterol to neurons.

8• Glycation damage interferes with the LDL-mediated delivery of fats and cholesterol to astrocytes, and therefore, indirectly, to neurons.

9• ApoE induces synthesis of Aβ when lipid supply is deficient.

10• Aβ redirects neuron metabolism towards other substrates besides glucose, by interfering with glucose and oxygen supply and increasing bioavailability of lactate and ketone bodies.

11• Synthesis of the neurotransmitter, glutamate, is increased when cholesterol is deficient, and glutamate is a potent oxidizing agent.

12• Over time, neurons become severely damaged due to chronic exposure to glucose and oxidizing agents, and are programmed for apoptosis due to highly impaired function.

13• Once sufficiently many neurons are destroyed, cognitive decline is manifested.

14• Simple dietary modification, towards fewer highly-processed carbohydrates and relatively more fats and cholesterol, is likely a protective measure against Alzheimer's disease.
I've added the numbers so I can comment on them.

Re 1 ~ We need to learn a lot more about Protein folding and if you want to help this research you can by downloading the computer program Folding home Whenever your PC is left on it works on this research project quietly in the background. My PC has completed 349 projects for them and I don't notice it working in the background and it's easy to pause if you want to play a game that requires 100% of you PC computing power.

2.~ Mitochondrial dysfunction is at the root of diabetes, metabolic syndrome and all that flows from these conditions. We can create new fully functional mitochondria by A)Exercise even modest exercise will help. B)Intermittent Fasting this does not have to mean a 24hr fast, Not eating between meals. Having just 2 meals a day, eating those 2 meals within 5hrs so there is 19hrs without any food. (gives a chance for fat burning) C) A Ketogenic diet. Less carbohrate more fat particularly coconut oil and Medium Chain Triglyceride oil. These are used as a substitute for glucose and metabolised straight away rather than being stored.

3.~ Apolipoprotein E4: A causative factor and therapeutic target in neuropathology, including Alzheimer’s disease this full text paper will help you better understand the role of ApoE4.

4~ So we need more fats of the type that are known to be used in the brain, hence Coconut Oil, MCT, Butter (pasture fed higher omega 3) more OMEGA 3 fish oil less or no industrial seed oils like such as corn, soybean, safflower, sunflower and cottonseed oil and any commerially prepared food made using those pro inflammatory omega 6 oils.

5~ AGE's are the brown parts when foods are roasted/fried grilled and beginning to burn. Fewer roasts/barbeques/grills and more soups, stews and casseroles. Don't fry your bacon to a crisp. It's fine if it'slightly underdone. Liver tastes best if pink in the middle IMO.

6~ We shouldn't add HFCS to anything let alone baked items. This is particularly so when you buy baked items. It's just amazing where you find HFCS, corn syrup these days.

7~ For every brain neuron we have 10 times more astrocytes. Apart from providing ketones to keep neurones from starving should glucose sources get low, they also regulate blood flow through the brain. It's probably disruption of brain blood flow that's oinvolved in MS. To keep astrocytes healthy they need feeding. Fat and cholesterol, bacon and eggs for breakfast fried in coconut oil. My choice for healthy astrocytes with a tsp of omega 3 fish oil.

8~ I think most people are now aware the curcum, resveratrol, phenols, and flavanoids inhibit Glycation damage.

9 ~ Do low fat diets increase Alzheimer's incidence?

11 ~ Hence need for plenty of anti oxidants in brain, Omega 3, Vitamin D, magnesium etc.

12 ~ Cut down on sugar and fructose sources.

13~ People with higher 25(OH)D levels have better cognitive function.

Thought it may be worth having this on my blog as I want to develop a section on how best to prevent Alzheimer's and collecting all the information together is a series of blogs would probably be useful.
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  1. Old Comment
    kind2creatures's Avatar
    Great topic Ted, AD is a devasating disease and knowledge is a good tool for prevention. I've increased my Omega 3s and started to take EVCO for that very purpose.
    Posted 02-24-2011 at 10:39 PM by kind2creatures kind2creatures is offline
  2. Old Comment
    Ted_Hutchinson's Avatar

    "Primal mind: Diet and mental health," by Nora Gedgaudas

    This talk explains the process.
    "Primal mind: Diet and mental health," by Nora Gedgaudas
    The slides for the talk are here
    PRIMAL MIND: Nutrition and Mental Health: Improving The Way You Feel And Function and Cultivating An Ageless Mind

    I found the best idea is to view the slides on my laptop while listening to the talk on my PC.
    Posted 08-21-2011 at 02:06 AM by Ted_Hutchinson Ted_Hutchinson is offline