All
fats and oils are composed of fat molecules called fatty acids.
There are two methods of classifying fatty acids. The one you
are most familiar with is based on saturation. You have
saturated fatty acids, monounsaturated fatty acids, and
polyunsaturated fatty acids. The second method of classification
is based on molecular size or length of the carbon chain in the
fatty acid. You have short-chain fatty acids (SCFA),
medium-chain fatty acids (MCFA), and long-chain fatty acids (LCFA).
Another term you will often see in reference to fatty acids is
triglyceride. Three fatty acids joined together make a
triglyceride, so you may have short-chain triglycerides (SCT),
medium-chain triglycerides (MCT), or long-chain triglycerides (LCT).
The vast majority of the fats and oils you eat,
whether they are saturated or unsaturated or come from an animal
or a plant, are composed of long-chain triglycerides. Probably
98 to 100 per cent of all fats we eat consist of LCT. Coconut
oil is unique because it is composed predominately of MCT. The
size of the fatty acid is extremely important because
physiological effects of medium-chain fatty acids in coconut oil
are distinctly different from the long-chain fatty acids more
commonly found in our diet. It's the MCT in coconut oil that
makes it different from all other fats and for the most part
gives it its unique character and healing properties. Almost all
medium-chain triglycerides used in research, medicine, and food
products come from coconut oil.
Have you or someone you know ever been in a
serious car accident? Serious enough that you had to be rushed
to the hospital and spend time in the intensive care unit. Or
maybe you've come down with a life-threatening illness. Or
perhaps due to age you've been hospitalized to treat some
degenerating condition. In any of these situations, whether you
lived or died depended on the care you received in the hospital.
Often this required you to be fed intravenously or through a
tube. In the intensive care unit there would be others, some
suffering from complications from genetic diseases such as
cystic fibrosis or epilepsy and perhaps even premature infants
struggling to survive their first few weeks of life. In each of
these cases you and these other patients can give some of the
credit for your recovery to coconut oil. Yes, in one form or
another, coconut oil was part of your treatment.
Regardless of the condition, recovery requires
good nutrition. Food scientists have long noted the nutritional
benefits of medium-chain triglycerides. MCT from coconut oil are
used in hospital formulas to feed the very young, the critically
ill, and those who have digestive problems. It makes up a vital
part of the solutions fed to patients intravenously or through a
tube inserted down the throat. If you were ever given formula as
a baby you took advantage of the health-promoting properties of
coconut oil. MCT from coconut oil have been added to baby
formula for decades.
MCT are easily digested, absorbed, and put to
use nourishing the body. Unlike other fats, they put little
strain on the digestive system and provide a quick source of
energy necessary to promote healing. This is important for
patients who are using every ounce of strength they have to
overcome serious illness or injury. It's no wonder why MCT are
added to infant formulas. Actually, whether you were breast or
formula fed as an infant you consumed MCT. Why? Because MCT are
not only found in coconut oil but are natural and vital
components of human breast milk. MCT are considered essential
nutrients for infants as well as for people with serious
digestive problems like cystic fibrosis. Like other essential
nutrients, you must get them directly from the diet.
One of the first scientifically recognised
benefits of MCT is the unique manner in which they are digested
and utilized by the body. These fats provide nutritional
benefits that can improve overall health of both the sick and
the well, the young and the old. Even athletes are now using
them to boost performance and control weight. Unfortunately, few
foods nowadays contain MCT; the best source is coconut oil. By
adding coconut oil to your diet you can literally eat your way
to better health.
Digestion and nutrient absorption
For at least five decades researchers have
recognised that the MCT were digested differently than other
fats. This difference has had important applications in the
treatment of many digestive and metabolic health conditions and
since that time MCT have been routinely used in hospital and
baby formulas.
The digestive health advantages of MCT over LCT
are due to the differences in the way our bodies metabolize
these fats. Because the MCT molecules are smaller, they require
less energy and fewer enzymes to break them down for digestion.
They are digested and absorbed quickly and with minimal effort.
MCT are broken down almost immediately by
enzymes in the saliva and gastric juices so that pancreatic
fat-digesting enzymes are not even essential. Therefore, there
is less strain on the pancreas and digestive system. This has
important implications for patients who suffer from digestive
and metabolic problems. Premature and ill infants especially
those whose digestive organs are underdeveloped, are able to
absorb MCT with relative ease, while other fats pass through
their systems pretty much undigested. People who suffer from
malabsorption problems such as cystic fibrosis, and have
difficulty digesting or absorbing fats and fat soluble vitamins,
benefit greatly from MCT. They can also be of importance to
people suffering from diabetes, obesity, gallbladder disease,
pancreatitis Crohn's disease, pancreatic insufficiency, and some
forms of cancer.
As we get older our bodies don't function as
well as they did in earlier years. The pancreas doesn't make as
many digestive enzymes, our intestines don't absorb nutrients as
well, the whole process of digestion and elimination moves at a
lower rate of efficiency. As a result, older people often suffer
from vitamin and mineral deficiencies. Because MCT are easy to
digest and improve vitamin and mineral absorption they should be
included in the meals of older people. This is easy to do if the
meals are prepared with coconut oil.
In the digestive system MCT are broken down into
individual fatty acids (MCFA). Unlike other fatty acids, MCFA
are absorbed directly from the intestines into the portal vein
and sent straight to the liver where they are, for the most
part, burned as fuel much like a carbohydrate. In this respect
they act more like carbohydrates than like fats.
Other fats require pancreatic enzymes to break
them into smaller units. They are then absorbed into the
intestinal wall and packaged into bundles of fat (lipid) and
protein called lipoproteins. These lipoproteins are carried by
the lymphatic system, bypassing the liver, and then dumped into
the bloodstream, where they are circulated throughout the body.
As they circulate in the blood, their fatty components are
distributed to all tissues of the body. The lipoproteins get
smaller and smaller, until there is little left of them. At this
time they are picked up by the liver, broken apart, and used to
produce energy or, if needed, repackaged into other lipoproteins
and sent back into the bloodstream to be distributed throughout
the body. Cholesterol, saturated fat, monounsaturated fat, and
polyunsaturated fat are all packaged together into lipoproteins
and carried throughout the body in this way. In contrast,
medium-chain fatty acids are not packaged into lipoproteins but
go to the liver where they are converted into energy. Ordinarily
they are not stored to any significant degree as body fat.
Medium-chain fatty acids produce energy. Other dietary fats
produce body fat.
Because of the above advantages, coconut oil has
been a lifesaver for many people, particularly the very young
and the very old. It is used medicinally in special food
preparations for those who suffer digestive disorders and have
trouble digesting fats. For the same reason, it is also used in
infant formula for the treatment of malnutrition. Since it is
rapidly absorbed, it can deliver quick nourishment without
putting excessive strain on the digestive and enzyme systems and
help conserve the body's energy that would normally be expended
in digesting other fats. Medium-chain triglycerides comprise a
major ingredient in most infant formulas commonly used today.
Metabolism and Energy
Eating foods containing MCT is like putting high
octane fuel into your car. The car runs smoother and gets better
gas mileage. Likewise, with MCT your body performs better
because it has more energy and greater endurance. Because MCFA
are funnelled directly to the liver and converted into energy,
the body gets a boost of energy. And because MCFA are easily
absorbed by the energy-producing organelles of the cells,
metabolism increases. This burst of energy has a stimulating
effect on the entire body.
The fact that MCT digest immediately to produce
energy and stimulate metabolism has led athletes to use them as
a means to enhance exercise performance. Studies indicate this
may be true. In one study, for example, investigators tested the
physical endurance of mice who were given MCT in their daily
diet against those that weren't. The study extended over a
six-week period. The mice were subjected to a swimming endurance
test every other day. They were placed in a pool of water with a
constant current. The total swimming time until exhaustion was
measured. While at first there was little difference between the
groups of mice, those fed MCT quickly began to out-perform the
others and continued to improve throughout the testing period.
Tests such as this demonstrated that MCT had the ability to
enhance endurance and exercise performance, at least in mice.
In another study using humans, conditioned
cyclists were used. The cyclists pedaled for three hours. During
the last hour they were each given a beverage to drink. Those
who received beverages containing MCT out-performed the others.
Because of studies like these many sports drinks and energy bars
sold at health food stores contain MCT to provide a quick source
of energy.
It's easy to see why athletes would be
interested in gaining greater endurance and energy, but what
about non-athletes? MCT can do the same for them. If eaten
regularly MCT can provide a boost in energy and performance of
daily activities. Would you like to increase your energy level
throughout the day? If you get tired in the middle of the day or
feel you lack energy, adding coconut oil to your daily diet may
provide you with a much needed boost to help carry you through.
Besides increasing your energy level, there are
other very important benefits that results from boosting your
metabolic rate: it helps protect you from illness and speeds
healing. When metabolism is increased, cells function at a
higher rate of efficiency. They heal injuries quicker, old and
diseased cells are replaced faster, and young, new cells are
generated at an increased rate to replace worn-out ones. Even
the immune system functions better.
Several health problems such as obesity, heart
disease, and osteoporosis are more prevalent in those people who
have slow metabolism. Any health condition is made worse if the
metabolic rate is slower than normal, because cells can't heal
and repair themselves as quickly. Increasing metabolic rate,
therefore, provides an increased degree of protection from both
degenerative and infectious illnesses.
Nature's perfect food
Among all the foods in nature there is one that
stands head and shoulders above all the rest. That food is
mother’s milk. Milk was designed by nature to supply all the
nutrients a baby needs for the first year or so of life. It
contains a perfect blend of vitamins, minerals, proteins, and
fats for optimal growth and development. Without doubt breast
milk is one of the wonders of nature.
Children who are breastfed not only take in
important nutrients from the milk, but also receive antibodies
and other substances necessary to protect them against childhood
illnesses such as ear infections, later in life. Breastfed
children are healthier than those who are not. They have better
teeth and jaw formation, they are less prone to allergies, have
better digestive function, and are better able to fight off
infectious disease. Research suggests that breastfed children
may even develop higher intelligence. Recognizing the
superiority of nature, scientists have attempted to make baby
formula match mother's milk as closely as possible.
An important component of breast milk is
medium-chain fatty acids, principally lauric acid. Lauric acid
is also the primary saturated fatty acid found in coconut oil.
Apparently nature thought it essential to the baby's health to
include it. Nature has a reason for everything it does. It
doesn't do things, such as putting MCT in milk, just for the fun
of it.
Some of the important reasons medium-chain fatty
acids are included in milk are improved nutrient absorption and
digestive function. As noted earlier, pancreatic enzymes aren't
even necessary to digest them. They also help to regulate blood
sugar levels. Another very important function is that
medium-chain fatty acids protect the baby from harmful
microorganisms. The baby's immature immune system is supported
by the antibacterial, anti-viral, anti-fungal, and
anti-parasitic properties of these vital fatty acids. In fact,
without these unique saturated fats, the baby would probably not
survive long. It would become malnourished and highly
susceptible to a myriad of infectious diseases.
Milk quality and MCT
Milk that is rich in medium-chain fatty acids is
vital for the healthy growth and development of the child. For
this reason, MCT are added to most, if not all, baby formulas.
Yet, these fatty acids are not exactly the same as those found
naturally in mother's milk.
Just as the fatty acid content and quality of
formula can be altered, so can human breast milk. Breast milk
is, without question, the best choice of food for babies. Not
all breast milk is the same however. The quality of the milk is
influenced by the mother's health and diet. Breast milk is made
from the nutrients the mother consumes. If she doesn't eat the
right amount of nutrients, her body will pull them out of her
own tissues. If the mother is deficient in these vital nutrients
herself, then the milk she produces will also be deficient.
Similarly, if she eats foods containing toxins (such as trans
fatty acids) her milk may contain them as well. Eating wisely is
very important for pregnant and nursing women and their babies.
The mammary glands produce small amounts of all
the medium-chain fatty acids, vital components in human breast
milk. They are there because they are easy for an infant's
immature digestive system to absorb and utilize. They help give
the baby the nutrients and energy it needs to grow and develop
properly. Because they also have antimicrobial properties they
give the infant some degree of protection against viruses such
as HIV and herpes, bacteria such a chlamydia and H. pyloris,
fungi such as Candida and protozoa such as giardia.
Both animal and human studies have shown MCT to
be an important component in mother's milk for the proper growth
and development of their offspring. For example, when pregnant
and lactating pigs were fed diets containing either long-chain
fatty acids (vegetable oil) or medium-chain fatty acids (coconut
oil) there was a pronounced difference in the survival and
growth rates. The piglets whose mothers received the MCT grew
faster and healthier and had a survival rate of 68% compared to
32%. This was particularly true with piglets which were born
underweight.5
The same thing appears to happen in humans. For
example, coconut oil was added to the formula of 46 very low-birthweight
babies to see if supplementation was capable of enhancing their
weight gain. The group with the coconut oil gained weight
quicker. The weight gain was due to physical growth and not fat
storage.6 The babies gained more weight and grew better with the
coconut oil because their bodies were able to digest it easily.
The vegetable oils, to a great extent, passed through their
digestive tracts undigested and thus deprived them of the fat
calories they needed for proper development. MCT not only allow
infants to absorb needed fats but they improve the absorption of
fat-soluble vitamins, minerals, and protein.7,8
Human milk fat has a unique fatty acid
composition. The primary fat is saturated, comprising about
45-50 percent of the total fat content. The next most abundant
fat is monounsaturated which makes up about 35 percent of the
milk fat. Polyunsaturated fat comprises only 15-20 percent of
the total. A significant portion of the saturated fat in human
breast milk can be in the form of MCT. Sadly, many mothers
produce very little. This can have dramatic consequences on the
health of their children.
If breast milk does not contain enough MCT, an
infant can suffer from nutritional deficiency and become
vulnerable to infectious illness. Therefore, it is important
that mother's milk contain as much MCT as nature will allow.
This can be done with diet. Given an ample supply of food
containing medium-chain fatty acids, a nursing mother will
produce a milk rich in these health-promoting nutrients.9 While
cow's milk and other dairy products contain small amounts, the
foods richest in medium-chain fatty acids are the tropical oils,
principally coconut oil.
The levels of these antimicrobial fatty acids
can be as low as 3 to 4 percent, but when nursing mothers eat
coconut products (shredded coconut, coconut milk, coconut oil,
etc.) the levels of MCT in their milk increase significantly.
For instance, eating 40 grams (about 3 tablespoons worth) of
coconut oil in one meal can temporarily increase the lauric acid
in the milk of a nursing mother from 3.9% to 9.6% after 14
hours.10 The content of caprylic and capric acids are also
increased. "This gives an important benefit," says Mary G. Enig,
Ph.D. an expert in lipid chemistry and Fellow of the American
College of Nutrition. "The milk has increased amounts of the
protective antimicrobials lauric acid and capric acid, which
gives even greater protection to the infant." If the mother
consumes coconut oil every day while nursing, the medium-chain
fatty acid content will be even greater.
Preparation by the mother should start before
the baby is born. Pregnant women store fat to be used later in
making their milk. After the baby is born the fatty acids stored
in the mother's body and supplied by her daily diet are used in
the production of her milk. If she has eaten and continues to
eat foods which supply ample amounts of MCFA, particularly
lauric acid and capric acid (the two most important
antimicrobial medium-chain fatty acids), her milk will provide
maximum benefit to her baby. These mothers can have as much as
18 percent of the saturated fatty acids in their milk in the
form of lauric and capric acids.
If the mother did not eat foods containing MCT
and does not eat them while nursing, her mammary glands will
only be capable of producing about 3 percent lauric acid and 1
percent capric acid. Her child will lose a great deal of the
nutritional benefits as well as the antimicrobial protection the
infant could have otherwise had.
Protection from Illness
One of the major characteristics of human breast
milk is its ability to protect infants from a myriad of
infectious illnesses during a time when their immune systems are
immature and incapable of adequately defending themselves. The
protective antimicrobial substances in milk that protect the
child from a world teaming with infectious germs and parasites
are the MCFA. There are some illnesses that even an adult with a
healthy immune system may have difficulty fighting off. If the
baby is not protected with an adequate amount of MCT in his or
her milk, exposure to such an infection could result in serious
illness.
When a nursing mother is infected with such an
illness, her child is also vulnerable. Mothers infected by
certain viruses can pass the infection on to their infants
through breastfeeding. In these cases breastfeeding is not
recommended. This is particularly true when the mother is
infected with a dangerous virus such as HIV. Recent research has
shown that mothers who include a source of lauric acid, such as
coconut oil, in their diets have lower risk of infecting their
nursing infants. The presence of the MCT in the milk lowers the
level of the virus in the milk and thus helps lower the risk of
transmission of the disease.
While HIV-infected mothers are usually advised
not to breastfeed their young for fear that the virus may be
transferred, there is no feasible option in some parts of the
world. Many women in resource-poor areas do not have the
financial means to buy infant formula. Breastfeeding is really
their only option. Adding coconut products and coconut oil to
the mother's diet is the only practical defense these women have
against passing the AIDS virus to their children.
It has been recommended that HIV-infected
mothers who are breastfeeding consume 24-28 grams/day of lauric
acid and 3-4 grams/day of capric acid to prevent the transfer of
the virus. Since coconut oil is nearly 48 percent lauric acid
and 7 percent capric acid, this requirement would be met if the
mother ate about 50-55 grams of coconut oil each day. A
tablespoon is equivalent to 14 grams. So 31/2 tablespoons of
coconut oil a day would provide the recommended amount of both
lauric and capric acids.
Other viral infections such as those that cause
measles, herpes, mononucleosis, and such are also a threat to
nursing infants. Pregnant women and nursing mothers can help
protect their children by eating an abundant amount of coconut
oil or products that contain coconut oil, such as shredded
coconut or coconut milk.
Any mother or expectant mother who desires a
healthy, well-developed baby should consider adding coconut oil
to her diet. She will not only assure better health for her
children but will benefit greatly herself.
MCFA are vital nutrients and protectors found
naturally in human milk. They are deadly enough to kill the AIDS
virus yet gentle enough to nourish a premature infant to health.
As we grow to adulthood and beyond, our bodies begin to wear
down. MCFA can help nourish and protect us, as it does infants,
from infectious and degenerative disease. It appears that
coconut oil provides many health benefits to those who are very
young and those who are very old and all those in between!
References:
1. Thampan, P.K. 1994. Facts and Fallacies
About Coconut Oil. Asian and Pacific Coconut Community, p.8
2. Kiyasu G.Y., et al. 1952. The portal
transport of absorbed fatty acids. Journal of Biological
Chemistry 199:415
3. Fushiki, T. and Matsumoto, K. 1995,
Swimming endurance capacity of mice is increased by chronic
consumption of medium-chain triglycerides. Journal of
Nutrition 125:531
4. Applegate, L. 1996. Nutrition. Runner's
World 31:26
5. Azain, M.J., 1993. Effects of adding
medium-chain triglycerides to sow diets during late gestation
and early lactation on litter performance. J. Anim. Sci.
71(11):3011
6. Vaidya, U.V., et al. 1992 Vegetable oil
fortified feeds in the nutrition of very low birthweight
babies. Indian Pediatr. 29(12):1519
7. Tantibhedhyangkul, P. and Hashim, S.A.,
1978. Medium-chain triglyceride feeding in premature infants:
effects on calcium and magnesium absorption. Pediatrics
61(4):537
8. Jiang, Z.M.,Et al. 1993. A comparison of
medium-chain and long-chain triglycerides in surgical
patients. Ann. Surg. 217(2):175
9. Francois, C.A., et al. 1998. Acute effects
of dietary fatty acids on the fatty acids of human milk. Am.
J. Clin. Nutr. 67:301
10. Ibid