Fats Found In Coconut Oil Boost Brain Function In Only One
Dose
A groundbreaking 2004 study published in
the journal Neurobiology
of Aging found that the administration of medium chain triglycerides (MCTs),
the primary fat type found in coconut oil, almost immediately improved
cognitive function in older adults with memory disorders.
The
study involved 20 subjects with Alzheimer's disease or mild cognitive impairment who,
on separate days, were given either emulsified MCTs or a placebo. The
researchers observed a significant increase in blood plasma levels of the ketone body
beta-hydroxylutyrate (beta-OHB) after only 90 minutes of treatment, and
depending on the apolipoprotein E genotype of the subject tested, beta-OHB
levels either continued to rise or held constant between the 90 and 120 minute
blood draws in the treatment condition. Remarkably, cognitive testing revealed
that this brief MCT treatment facilitated improved performance on the
Alzheimer's Disease Assessment Scale-Cognitive Subscale (ADAS-cog) in 4
subjects within the study group. Moreover, "higher
ketone values were associated with greater improvement in paragraph recall with
MCT treatment relative to placebo across all subjects (P=0.02)."[i]
The details of the study
procedure was described as follows:
The study was
conducted with a double-blind placebo controlled design with two study visits.
During each visit, subjects received one of two isocaloric conditions (690calories)
in a randomized order: emulsified MCTs, or emulsified long chain triglycerides
as a placebo. NeoBee 895 (Stepan,
Inc.) was used for MCTs. To increase palatability, heavy whipping cream was
used as a source of long chain triglycerides and as a source of long chain
mono- and di-glycerides for emulsification. MCTs (40ml) were blended with 152ml heavy whipping cream to create
the emulsified test sample. Heavy whipping cream alone (232ml) was blended to create the
placebo.
Subjects
fasted from 8:00 p.m. on the night prior to the study visit. They arrived in
the morning and blood was drawn to determine plasma β-OHB levels and APOE
genotyping (first visit only). Subjects then consumed the test beverage and
rested quietly for 90min, after which blood was drawn and
a 30-min cognitive testing session ensued. After testing, a final blood draw
was taken.
HOW MEDIUM CHAIN TRIGLYCERIDES WORK
How could a single dose of MCTs (40 ml or 2.7 tablespoons) cause
an almost immediate improvement in cognitive performance in those suffering
from cognitive impairments as serious as Alzheimer's disease? The explanation
is found both in the unique metabolic needs of the brain and in the
configuration of MCTs themselves. Whereas the primary fuel source for the
energy-hungry brain is glucose, when insulin resistance and suboptimal
metabolism (hypometabolism) develops in the brain, both the brain's structure
and function are compromised. Ketone
bodies provide a much needed alternative fuel source to glucose
that can recharge metabolic processes within the brain, resulting in an almost
immediate improvement in cognitive function.
MCTs are not like most
fats we consume. For instance, due to their smaller size they do not
form micelles and are not stored in adipose
tissue. Whereas up to 97% of the dietary fats we ingest are made
up of long-chain triglycerides (LCTs) which have been 14 and 18
carbons,[ii] MCTs have relatively shorter chain lengths of 5 to 12
carbons, making them easier to absorb and utilize. They are preferentially
oxidized by the liver, and when provided in large enough quantities, they give
rise to ketone bodies.[iii]
What is the best way to take MCTs? As we are advocates of whole food nutrition, coconut
oil is our preferred source of these triglycerides, containing approximately
2/3rds MCTs by volume. Coconut oil also has a broad spectrum of other
health benefits, which we highlighted in our previous article
"13 Evidence-Based Medicinal
Properties of Coconut Oil."
Also, instead of treating coconut oil or MCTs as some new
nutraceutical "magic bullet," almost as if we are just loading
natural bullets into the same old outdated allopathic gun, try incorporating it
into your diet in a way that displaces less healthy fats. For instance, replace that rancid,
pro-inflammatory 'vegetable oil' (e.g. soy, grape seed, peanut, canola oil) you
are using to fry an egg or bake with, with sublimely saturated,
rancidity-resistant coconut oil.
Or, enjoy a delicious curry with coconut
milk as a base. Because 25% of coconut milk is fat, and about 66% of that fat is MCT, you are still
getting a healthy
dose. It is always better to eat smaller amounts of truly
therapeutic foods, enjoyed in the context of sharing, preparing and enjoying
good food, so that you will ideally never have to use the heroic "food as
medicine" approach after a serious disease has had the opportunity to set
in. Think: use food so that medicine never becomes
necessary.
For additional information view the testimonial of Dr. Mary
Newport who discovered the benefits of using coconut oil to treat her
husband's Alzheimer's Disease.
Article Resources
[i] Mark
A Reger, Samuel T Henderson, Cathy Hale, Brenna Cholerton, Laura D Baker, G S
Watson, Karen Hyde, Darla Chapman, Suzanne Craft. Effects of beta-hydroxybutyrate on
cognition in memory-impaired adults. Neurobiol Aging. 2004
Mar;25(3):311-4. PMID: 15123336
[ii] Anonymous: Medium chain triglycerides. Alt Med Rev 2002, 7:418-420.[iii] Lauren C Costantini, Linda J Barr, Janet L Vogel, Samuel T Henderson. Hypometabolism as a therapeutic target in Alzheimer's disease. BMC Neurosci. 2008 ;9 Suppl 2:S16. Epub 2008 Dec 3. PMID: 1909098
[ii] Anonymous: Medium chain triglycerides. Alt Med Rev 2002, 7:418-420.[iii] Lauren C Costantini, Linda J Barr, Janet L Vogel, Samuel T Henderson. Hypometabolism as a therapeutic target in Alzheimer's disease. BMC Neurosci. 2008 ;9 Suppl 2:S16. Epub 2008 Dec 3. PMID: 1909098
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