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 Sunday, June 21, 2009
6/21/2009 7:19 PM MST  

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Brain starvation has been discussed on numerous occasions in this blog. What it means is that the brain doesn't get enough of the proper nutrients for optimal function. In this case, we are referring to the primary brain fuel glucose (the "sugar" that is measured in the blood when blood sugar tests are performed). This is important because when brain cells (or neurons as they are called by medical doctors) don't receive enough glucose to fuel their metabolic needs, certain adverse consequences occur.

One of these is an increase in the production of the sticky clumps of proteins in the brain called beta-amyloid fibrils, which turn into senile plaques -- the postulated culprits behind the development of Alzheimer disease. When they build up, inflammation develops that leads to the loss of neuronal function and ultimately death of neurons throughout the brain. This is what causes memory loss, confusion, difficulty thinking and even behavioral changes.

Most currently available drugs that treat this horrible disease don't address this critical issue and, in part, because of this they are not very effective. However, there is an alternative approach that we have talked about previously that can offer help. By being turned into ketone bodies (an additional type of brain fuel), compounds called medium chain triglycerides (MCTs) can "bridge the energy gap" caused by the fall off in the ability of the brain to effectively utilize glucose. This is especially helpful in persons on insulin therapy for Type 2, or adult-onset, diabetes. In this condition, insulin overdoses can lead to confusion and fuzzy thinking due to the excessive fall in blood glucose (and subsequently brain glucose) they cause. MCTs in the diet can ameliorate these symptoms.

A new medical food (an FDA-regulated food like product) called Axona has recently been released by the company Accera for the nutritional treatment of Alzheimer disease. It is a powder that is prescribed by a physician and is administered once a day -- usually in the morning -- after being dissolved in water. It is a product that contains MCTs and generates ketone bodies when it is consumed. It has been tested and shown to improve cognition in this group of patients. The only significant side effects are related to mild abdominal distress and it may be used safely with other Alzheimer medications. The web site for further information is www.about-axona.com.

Monday, June 22, 2009 5:50:40 AM (Mountain Daylight Time, UTC-06:00)
How does this relate to a (fairly) low carb diet? Is this more an issue of blood sugar control rather than diet?
Kevin
Tuesday, June 23, 2009 11:33:46 AM (Mountain Daylight Time, UTC-06:00)
Hi Kevin

By restricting carbs, the body depends more on fat (and as a result, ketones). When the brain is not effectively metabolizing glucose, but can effectively utilize ketones, they can take over. Axona is an approach that generates ketones regardless of carb load or insulin level.

For diabetics who take insulin, hypoglycemia can result when excessive insulin is administered. Under these circumstances, the brain can suffer and symptoms can develop -- tremulousness, jitteriness, confusion and even loss of consciousness. This occurs because of a fall in energy availability due to the fall in glucose. Ketones can be another energy source, and as such, can alleviate these symptoms since the brain doesn't care what generates the energy as long as the level is sufficient. Hence, ketones can "pinch hit" for glucose.

Thus, Axona can help in both situations -- Alzheimer disease (where glucose uptake into the brain is diminished) and diabetes associated with insulin administration.

Thanks,

Larry McCleary
Larry McCleary
Wednesday, June 24, 2009 11:39:00 PM (Mountain Daylight Time, UTC-06:00)
Hi Dr. McCleary,

My 13 year old son is a type 1 diabetic. It seems frequent hypoglycemic episodes go with tight control. Do you see any benefit for a type 1 to take MCT oil (or even coconut oil)? If the brain symptoms are alleviated could this cause hypo-unawareness?

Thank you for this great blog.

Jan
Janet Bartier
Thursday, June 25, 2009 9:22:33 AM (Mountain Daylight Time, UTC-06:00)
Dr. McLeary,
Are you familiar with this research?
http://www.coconutketones.com/
Why take a food product when Coconut oil, a natural food, could have the same benfit?
Jeanne
Saturday, July 04, 2009 4:43:44 PM (Mountain Daylight Time, UTC-06:00)
Hi Jeanne

Coconut oil (per gram of MCT) has about twice the calories as pure MCT oil. If calories are not a factor, then coconut oil, or a mixture, is fine.

Thanks,
Dr. Larry McCleary
Saturday, July 04, 2009 4:51:55 PM (Mountain Daylight Time, UTC-06:00)
Hi Jan

Hypoglycemia is a concern for Type I diabetics who practice tight glucose management because of the risk of insulin overdose. By providing MCT oil, another brain fuel (ketone bodies) is available during times of hypoglycemia. This may mask epochs of low blood sugar because the brain has been provided with an alternative energy source. If hypo-awareness of low blood sugar is a problem, this approach may help mitigate the adverse impact on the brain.

Thanks.
Dr. Larry McCleary
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