L’olio di cocco può guarire l’Alzheimer?

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Created on Tuesday, 11 September 2012 09:06

Una dottoressa statunitense ritiene che l'olio di cocco possa trattare l'Alzheimer, ma non tutti sono d'accordo

Un libro scritto da un medico statunitense, già divenuto un bestseller, ha fatto sperare milioni di persone affette dalla demenza e dalla malattia di Alzheimer. È tutto vero?
Se fosse vero, sarebbe l’ancora di salvezza per le milioni di persone in tutto il mondo che soffrono della malattia di Alzheimer, una delle più gravi e debilitanti forme di demenza.
A questo proposito, l’Università della California a Berkeley pubblica sul suo Magazine online una UC Berkeley Wellness Letter in cui si riporta quanto scritto dalla dottoressa Mary Newport nel suo libro che ha per titolo “Alzheimer’s Disease: What If There Was a Cure?”.

La dottorezza Newport riferisce come si potrebbe trattare l’Alzheimer senza dover ricorrere ai costosi farmaci chimici che, tra gli altri, pare abbiano effetti solo marginali e molti altri effetti indesiderati. La soluzione, secondo la scienziata, si trova in un semplice cibo: l’olio di cocco che, secondo lei, avrebbe intensi effetti sulla malattia. E le sue affermazioni traggono spunto da una vicenda reale quanto personale, ossia la ricerca di un rimedio per il proprio marito affetto dalla malattia di Alzheimer.

Le sue sperimentazioni alla ricerca di un rimedio che potesse guarire, o quantomeno far stare meglio il marito, l’hanno portata a considerare la dieta chetonica – già conosciuta per il suo possibile utilizzo nel trattare l’epilessia. La scelta chetonica è stata dettata dalla constatazione che i chetoni pare possano curare diversi disturbi neurologici.

I chetoni, lo ricordiamo, sono sottoprodotti della ripartizione dei grassi nel corpo che vengono normalmente prodotti dall’organismo, però in quantità più o meno ridotte. Detto molto semplicemente, ciò che invece può fare una dieta povera di carboidrati ma ricca di grassi è proprio far aumentare questi chetoni. Tuttavia, ciò che cercava la dottoressa Newport non erano i “normali” grassi utilizzati nella dieta chetonica ma i grassi chiamati trigliceridi a catena media (MCT), di cui l’olio di cocco e l’olio di palma sono buone fonti.

L’assunzione di questi MCT stimola una funzione del fegato, il quale li convertite in chetoni. Questi possono poi essere utilizzati dal cervello e altri organi come combustibile al posto degli zuccheri utilizzati in genere.

Questi tipo di grassi, poi, sono una fonte di energia più immediata rispetto ad altri tipi di grassi, e non vengono immagazzinati con più facilità come grasso corporeo. Cosa da tenere in gran considerazione, si legge nell’articolo della UCB, i chetoni possono fornire energia alle cellule senza la necessità di insulina.

La teoria di base è che i chetoni potrebbero fornire una fonte alternativa di energia per le cellule cerebrali che hanno perso la capacità di utilizzare il glucosio, che ha come risultato l’Alzheimer.

Ma torniamo alla dottoressa Newport e ai suoi esperimenti sul marito. Il medico ha così iniziato a far assumere al marito l’olio di cocco in modo da favorire una maggiore produzione e concentrazione di chetoni. Nel suo libro, poi, riporta come questa situazione abbia portato a miglioramenti nella memoria a breve termine – quella in genere più critica –, abbia alleviato la depressione, abbia fatto in qualche modo rifiorire la sua personalità e abbia ridotto anche i problemi visivi e migliorato la deambulazione (ossia il potersi muovere, camminare). Una risonanza magnetica ha supportato questi risultati mostrando che vi era stato un arresto del processo di contrazione del cervello.

Ovviamente, quando si grida al miracolo c’è chi fa un passo indietro e prende le distanze. Molti scienziati infatti commentano che queste sono solo prove aneddotiche e che il corso della malattia di Alzheimer può variare da persona a persona, si legge ancora nell’articolo. Per cui ci possono essere periodi di stabilità e miglioramenti temporanei entro il declino a lungo termine.

In difesa della sua tesi, la dottoressa Newport cita i diversi studi che suggeriscono come una dieta chetonica possa contribuire a trattare i casi difficili di epilessia, così come potenzialmente altri disturbi neurologici o il Parkinson. Per contro, gli scienziati ricordano che gli studi sono molti diversi, condotti in modi altrettanto diversi e anche su modello animale. In più, non è stato mai utilizzato solo l’olio di cocco ma anche alte concentrazioni di MCT o altri preparati speciali.

In sostanza, la questione è sempre aperta: c’è chi rema a favore come, per esempio, le persone che hanno utilizzato l’olio di cocco e hanno mostrato miglioramenti – così come riportato dall’Associazione Alzheimer. E chi rema contro affermando che non vi è alcuna sperimentazione clinica sugli eventuali effetti di quest’olio.

L’olio di cocco è stato peraltro oggetto di altri studi e soggetto di altri libri in cui si decantano le proprietà benefiche sulla salute come, per esempio, il rafforzare il sistema immunitario, migliorare la digestione, prevenire e rallentare l’invecchiamento, favorire la perdita di peso, prevenire le malattie cardiache o l’artrite eccetera. Tuttavia, come detto, sono in molti a essere scettici e probabilmente lo saranno fino a che non vi sarà uno studio clinico – o più studi – che ne attesti formalmente le proprietà. Da qui l’esigenza e la necessità di proseguire nella ricerca a beneficio di tutti.

Nel libro si legge che il marito della dottoressa Newport è arrivato ad assumere ben 11 cucchiai al giorno di quest’olio che, se assunto in dosi massicce, può provocare dissenteria e altri problemi gastrointestinali – come riferito dalla stessa Newport. Si tenga conto che la dose consigliata va da 4 a 8 cucchiai al giorno.

Alla domanda posta da alcuni lettori del Magazine della UCB se l’olio di cocco può prevenire l’Alzheimer, i ricercatori hanno risposto che non vi è ragione per ritenere questo allo stato attuale delle cose, e che non vi è la prova che nessun alimento, modello alimentare, nutrienti, o supplemento possa aiutare a prevenire il declino cognitivo o la demenza correlati all’età.
Il consiglio infine, è quello di rivolgersi sempre al proprio medico o neurologo prima di intraprendere una qualsiasi cura, anche se suggerita su un libro.

Source: Berkeley Health Online - University Of California - Berkeley School of Public Health

Coconut Oil and Alzheimer’s Disease: The News is Spreading

by Brian Shilhavy Health Impact News

The Failure of the Medical System to Treat Alzheimer’s

The news about how effective coconut oil is in treating Alzheimer’s Disease is spreading fast, as news about the failure of drugs in treating Alzheimer’s continues to make headlines in 2012. Just recently, drug companies Pfizer and Medivation admitted that the new drug they were developing for Alzheimer’s, dimebon, not only did not help patients in trials, but made patients worse. The expensive drug had already reached phase III trials.

In May 2012 a federal judge ruled that a case against Harvard Medical School and its teaching hospitals regarding fraudulent research using public funds for Alzheimer’s disease was to proceed.

So as the development of this drug has now been abandoned, and so many other potential drugs have also failed (possibly due to fraudulent research?), many are beginning to look at the role of diet in Alzheimer’s and focusing on prevention. People are also beginning to see positive results in using coconut oil to reverse the effects of Alzheimer’s.

The harm of low-fat high-carbohydrate diets in cholesterol uptake in the brain

One of the most recent studies that looked at the role of nutrition in Alzheimer’s was published in the European Journal of Internal Medicine: “Nutrition and Alzheimer’s disease: The detrimental role of a high carbohydrate diet”.

The authors of this study have noted how researchers have begun to direct their energies towards understanding the earlier stages of AD, since drug research in later stages has not been very successful. They note that several researchers have noticed a strong correlation between insulin resistance in the brain and early AD, suggesting that AD might be considered a neuroendocrine disorder of the brain or so-called “type 3 diabetes.” Other observations have noted an association of AD with mitochondrial dysfunction, which is also common in Parkinson’s disease, and amyotrophic lateral sclerosis (ALS).

But the authors’ main conclusions regarding the early causes of AD center around the transport of cholesterol from the blood stream to the brain. They state that there is mounting evidence which suggests that a defect in cholesterol metabolism in the brain may play an important role in AD. They give a nice summary of the brain’s dependency on cholesterol:

The brain represents only 2% of the body’s total mass, but contains 25% of the total cholesterol. Cholesterol is required everywhere in the brain as an antioxidant, an electrical insulator (in order to prevent ion leakage), as a structural scaffold for the neural network, and a functional component of all membranes. Cholesterol is also utilized in the wrapping and synaptic delivery of the neurotransmitters. It also plays an important role in the formation and functioning of synapses in the brain.

They point to several studies that show a lack of cholesterol present in the brains of AD patients which is so vital for several functions, and also note that other studies show this cholesterol deficiency in dementia and Parkinson’s disease. In contrast, high cholesterol levels are positively correlated with longevity in people over 85 years old, and in some cases has been shown to be associated with better memory function and reduced dementia.

The authors go on to explain that the lipid theory of heart disease started by the work of Ancel Keys in the 1960s led to dietary beliefs that cholesterol was to be avoided in the diet, and with that belief came the “over-zealous prescription of cholesterol-reducing medications over the same decades in which there has been a parallel rise in AD prevalence.”

Another result of the low-fat dietary belief was the replacement of fats in the diet with refined carbohydrates, which leads to a rise in blood glucose levels and over time to insulin resistance and diabetes. They point out that the prevalence of fructose, mostly in the form of high fructose corn syrup, is ten times more reactive than glucose in inducing glycation. This impairs serum proteins, and they hypothesize that this leads to a depletion of much needed cholesterol and fat in the brain. Strong evidence in favor of their hypothesis is the fact that studies show patients with type-2 diabetes are at two to five times increased risk to AD.

Increased lipid peroxidation is also shown to be an early cause of Alzheimer’s disease. Liquid vegetable oils, the polyunsaturates, are highly prone to oxidation and rancidity, and it is now well known that in the form of trans fatty acids (through the process of hydrogenation) they are extremely toxic.

Dr. Raymond Peat has talked about the difference between polyunsaturated oils and saturated oils in their importance for brain tissue for years now:

Brain tissue is very rich in complex forms of fats. The experiment (around 1978) in which pregnant mice were given diets containing either coconut oil or unsaturated oil showed that brain development was superior in the young mice whose mothers ate coconut oil. Because coconut oil supports thyroid function, and thyroid governs brain development, including myelination, the result might simply reflect the difference between normal and hypothyroid individuals. However, in 1980, experimenters demonstrated that young rats fed milk containing soy oil incorporated the oil directly into their brain cells, and had structurally abnormal brain cells as a result. Lipid peroxidation occurs during seizures, and antioxidants such as vitamin E have some anti-seizure activity. Currently, lipid peroxidation is being found to be involved in the nerve cell degeneration of Alzheimer’s disease.

How Coconut Oil Can Help Alzheimer’s

Coconut oil, by contrast, is highly saturated, and in its natural unrefined form has a shelf life of more than 2 years. Unlike unsaturated oils, it is not prone to oxidation.

Also, the study from the European Journal of Internal Medicine referenced above notes that Alzheimer’s, Parkinson’s disease, and amyotrophic lateral sclerosis (ALS) all have an association with mitochondrial dysfunction. A study published in 2010 used coconut oil to show that a diet enriched in the saturated fatty acids of coconut oil offered strong advantages for the protection against oxidative stress in heart mitochondria.

Much research is also being uncovered now on the advantages of high HDL cholesterol levels, besides the study we mentioned above in direct relation to Alzheimer’s. A study appearing in the American Journal of Cardiology in February 2011 showed that the higher men’s HDL cholesterol levels, the longer they lived and the more likely it was that they would reach the age of 85. A diet with adequate amounts of saturated fat is essential to keeping HDL high cholesterol levels. Those with deficiencies and suffering from neurological disorders need to consider a diet that is high in saturated fat, in stark contrast to the mainstream dietary advice for low-fat diets that might be causing many of these late-in-life diseases.

Another major advantage the saturated fat of coconut oil provides is its ability to provide the brain with an alternate source of energy in ketones. Ketones are high energy fuels that nourish the brain. Our body can produce ketones from stored fat while fasting or in starvation, but they can also be produced by converting medium chain fatty acids in certain foods. Coconut oil is nature’s richest source of these medium chain triglycerides (MCTs). A study done in 2004 took MCTs from coconut oil and put them into a drink that was given to Alzheimer’s patients while a control group took a placebo. They observed significant increases in levels of the ketone body beta-hydroxybutyrate (beta-OHB) 90 minutes after treatment when cognitive tests were administered. Higher ketone values were associated with greater improvement in paragraph recall with MCT treatment relative to placebo across all subjects.

As coconut oil’s use becomes more accepted and widespread, and as people begin to realize the dangers of the low-fat dietary belief, we are starting to see more testimonies in relation to diseases like Alzheimer’s. One of the most widely published reports is from Dr. Mary Newport as reported by the St. Petersburg Times on October 29, 2006. Dr. Newport’s husband had been diagnosed with early onset Alzheimer’s and was watching her husband quickly deteriorate. After using drugs that slowed down the effects of Alzheimer’s, she looked into clinical drug trials and found one based on MCTs that not only slowed the progression of Alzheimer’s, but offered improvement. Not being able to get her husband into one of these trials, she began to give him Virgin Coconut Oil, and saw incredible improvement in his condition.

The coconut oil he’d ingested seemed to “lift the fog.” He began taking coconut oil every day, and by the fifth day, there was a tremendous improvement. “He would face the day bubbly, more like his old self,” his wife said. More than five months later, his tremors subsided, the visual disturbances that prevented him from reading disappeared, and he became more social and interested in those around him.

While this is a great story showing how ketones and coconut oil can help with Alzheimer’s disease, it does not even address the whole issue of cholesterol uptake to the brain as I wrote about above. Dr. Newport admits that her husband Steve was taking statins (cholesterol lowering drugs) until she took him off of them in 2009, after studying the cholesterol issue. She stops short, however, in recommending that others suffering from Alzheimer’s do the same. Until the media and the general public wake up to the facts regarding all the serious side effects from cholesterol-lowering statin drugs, simply adding coconut oil to one’s diet might only have a minimal effect.

Carol Flett came across Dr. Newport’s research while praying for a solution to her husband’s worsening dementia. In her blog post Can God Use Facebook to Answer Prayers? she reports:

Within three or four hours after giving Bruce the first couple of tablespoons (of coconut oil) he was speaking in clear sentences again. He did have one relapse, shortly after starting, but it lasted only a day. After that he sprang right back and has been doing well ever since, taking care of many things himself that he hadn’t been able to do for a long time. The doctor came to see Bruce yesterday. He was amazed. He ordered another cognitive test, but he could see for himself that Bruce was much better. I told him about the answer to prayer. He believes in God. He didn’t scoff. He just said, “Keep doing what your doing because it’s is working.” I believe God can use whatever method he chooses. If He chooses to use part of his creation such as coconut oil, I won’t complain, and if He gives direction to His praying child through Facebook, that is His prerogative as well.

She has since posted a video of Bruce thanking people for praying for him, and explaining how his condition changed dramatically after taking coconut oil. He reports how he was diagnosed with dementia and could no longer care for himself, and that the doctors recommended that he be put in a nursing home.

Dietary Advice for Alzheimer’s Sufferers

Coconut oil does offer hope as nature’s most abundant source of MCTs, and it is an easily convertible fuel source for ketones. In addition, it is one of nature’s richest sources of saturated fat which is needed to produce HDL cholesterol to feed the brain. People suffering from Alzheimer’s should immediately start avoiding polyunsaturated forms of oil such as soy and corn oils, especially if they are hydrogenated and in the form of trans fatty acids. These are prone to oxidation and potentially mitochondrial dysfunction. Other healthy fats would include butter from the milk of cows that are grass-fed, and Omega 3 fatty acids from high quality fish oil, cod liver oil, or krill oil.

Refined carbohydrates in the form of refined wheat products and refined sugars should be strictly avoided! High protein foods such as eggs from pastured chickens (preferably fed a soy-free chicken feed), pastured poultry, and grass-fed meats are all desirable proteins for brain health.

I started checking into Coconut oil because I saw on the news that Alzheimers patients were dramatically improving after taking this oil. I bought some for my father who had recently been diagnosed and he now thinks the Alzheimers has gone away! I’m using it too and I feel so good, physically and MENTALLY better! Roxie (Coconut Diet Forums)