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Copyright © 2005 IslandTrainer.com. All Rights Reserved.
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Nutrition and Exercise Needs for the
Elderly
Beth H. Macy – 8 April 2005
Table of
Contents
I.
Overview.............................
3
II.
The Aging
Process............................. 4
III.
Exercise and
the Elderly............................. 7
IV.
Nutrition
and the Elderly.............................10
V.
Conclusions...............................13
References.............................14
Appendix A – What should an elderly person
eat?.............................15
Appendix B – Exercises for the elderly................................17
Appendix C – Bioflavonoids
and antioxidants..............................26
I.
Overview
This paper is to research the assumption that many of the issues
facing the older population are attributed to Ònormal agingÓ or even diagnosed
as a medical problem and treated with prescription drugs when many of these
Òold age symptomsÓ are actually caused by poor nutrition and exercise habits
and can be positively impacted by addressing those areas.
ÒElderlyÓ is defined a number of different ways, from being ÒSomewhat
old; advanced beyond middle age; bordering on old age; as, elderly people.Ó(1) to the US government defining
ÒSenior CitizenÓ as 60 years old or older and ACE classifying the older adult
as age 65 or above. The Canadian government classifies elderly as:
ÒDefinition of Elderly: Older people tend to be slower to learn
new skills, have difficulty in memorising and reacting quickly to instructions.
Also many elderly people prefer human assistance to using self-service
terminals.Ó (2)
II.
The Aging Process (3) (4)
The human aging process is complex and includes:
-
reduced
taste
-
vision
changes
-
hearing
changes
-
reduction in
smell
-
reduction in
the ability to tell when you are thirsty
-
changes in
skin
-
reduced
immune system function
-
dehydration
-
shrinking
height
-
memory
difficulties
-
difficulty
in learning
-
weight
changes
-
inability to
keep warm
-
increased
pain tolerance
-
deteriorating
vocal cords
Éamong other symptoms.
We start to lose our taste buds at the age of 10. We start with
around 500-600 and at age 30 have 245, and at age 85 have 88 left. The sweet
and salty ones decline first, so food tends to taste sour and bitter. Basically
food just isnÕt as interesting. There is also a decline in saliva production.
That means itÕs more difficult to eat; chewing and swallowing get more
difficult. Overall the elderly often start to eat less of a variety of foods.
It is common for people to lose teeth as they age, or to have
increasing problems with decay or mouth ulcers. If dentures are worn they may
become loose as a result of change in bone structure in the face and jaw.
Vision peaks at age 17 and then declines to age 35. Then around
age 45 we experience a rapid decline in near and night vision. As we age we get
sensitive to glare and lose our ability to distinguish between contrasting
colors. It takes longer to adjust to changes in lighting. We lose depth
perception and peripheral vision as we age. ItÕs harder to get around and do
things.
Hearing peaks at age 7, it rapidly declines after age 60,
especially in men, but baby boomers are experiencing loss earlier at 45. We can
no longer hear the pan boiling over. Cooking gets more dangerous.
The sense of smell ÒagesÓ the slowest. It starts to decline at 65
but medications and smoking and sinus infections and allergies can lessen,
affect and distort the sense of smell. If you canÕt smell, then you canÕt
taste. And you may not be able to smell the familiar food smells that you used
to smell.
Alcohol consumption, sugary sweets and medications can help
dehydrate. And as we age, we lose our sense of thirst. Symptoms of dehydration
mimic dementia, Alzheimers. And constipation can occur which will cause the
elderly to not want to eat more.
Memory wanes around age 30 with a rapid decline at age 70. We can
forget we left the stove burner on and rather than admit a decline we stop
using the stove!
Beginning at age 40 we start losing height caused by water loss,
weak muscles, postural changes, spinal disc deterioration and osteoporosis.
Older adults are typically cold due to less fat beneath the skin
and less blood flow to the skin.
ThereÕs a decrease in metabolic rate due to loss of muscle tissue,
and increase in body fat and a loss of bone mass. This can slow as much as 30%
over a lifetime.
We also experience loss in muscle, and subsequent reduction in
strength, reduced joint mobility. This affects things like walking, balance,
suppleness and agility, and consequently, with reduced activity, affects
overall fitness.
Again, itÕs harder to get around and do things, what used to be an
easy task seems daunting. The elderly tire easier.
Change in the digestive system may slow down digestion of food
(especially fat), alcohol tends to be less well tolerated, and absorption of
some nutrients, including folate, vitamin B12, calcium, iron, may be reduced.
Evidence indicates that up to 30% of elderly demented patients have low levels
of vitamin B12 in their blood
Many physicians chalk a host of problems up to Òold ageÓ and treat
them with medications. Elderly patients tend not to question and take a huge
array of drugs which could have adverse side effects. Some even self medicate,
borrowing drugs from others or going to numberous doctors and getting different
ÒsolutionsÓ to their problems via perscriptions in an attempt to feel better.
III.
Exercise
and the Elderly
As we can see from the information about aging, from our early
years onwards our bodies are aging. The rate at which we age can be attributed
to our genetics and how we live. Leonard Hayflick (5) findings indicate that
lifestyle changes alone will not allow us to overcome the genetically
programmed factors responsible for human aging.
However, most studies suggest that, on average, people who
exercise regularly have lower biological ages than people of the same
chronological age who do not exercise (6)
Available evidence indicates that biological aging is a complex
process related by numerous, redundant mechanisms. But although structural
decay and functional decline are an inescapable consequence of aging, both the
rate and extent of this decline vary widely between individuals (7)
The World Health Organization in 1997 stated that regular physical
activity can assist in avoiding, minimizing and/or reversing many of the
physical, psychological and social hazards that often accompany advancing age.
They stated physical activity can immediately help regulate blood
glucose levels, stimulate adrenalin and noradrenalin levels, and enhance sleep
quality and quantity in individuals of all levels.
They also stated that long term effects are improvements in
aerobic/cardiovascular endurance, muscle strengthening, flexibility,
balance/coordination, and velocity of movement. (8)
Evans and Rosenberg (1991) (9) formulated a list of 10 measurable,
modifiable and Òvitality-influencingÓ biomarkers based on a philosophy of maintaining
good health for the longest period of time:
1. Muscle Mass
2. Strength
3. Basal metabolic rate
4. Body-fat percentage
5. Aerobic Capacity
6. Blood-Sugar tolerance
7. Chloresterol/HDL ratio
8. Blood Pressure
9. Bone Density
10. Ability to regulate internal body temperature
There is convincing evidence that physiological aging advances
more rapidly with an accumulation of years of inactivity:
Bruce, 1984
–
Sedentary
individuals have a nearly a 2-fold faster rate of decline in VO2 max as they
age as compared to active individuals
Imamura et al, 1983 (10)
–
Muscle mass
reduction is primarily responsible for the age associated loss of strength,
which reflects a loss of total muscle protein caused by inactivity, aging or
both.
Heath, 1988
–
The major
cause of declining flexibility is a lack of movement in joints not usually in
daily activities.
Powell et al, 1987
–
The relative
risk of fatal coronary heart disease among the sedentary is about twice that of
active individuals
Spirduso, 1975 (11)
-
Movement
times for active people, both young and old, are faster than those in
corresponding age groups who are less active
-
Reaction
times of older men who have remained active for 20 or more years are equal to
or faster than those of inactive men in their 20Õs.
Hagberg et al, 1988
-
Athletes
over age 60 have consitently larger than expected values for vital capacity,
total lung capacity, residual volume, maximum voluntary ventilation and forced
expiratory volume based on their body size. The values are also significantly
larger than those of sedentary, age-matched, healthy counterparts.
If we look at the changes that come with aging through loss of
muscle mass such as lower metabolic rate, inability to control temperature, and
balance problems, as well as the medical problems such as high blood pressure,
breathing problems, high cholesterol, blood-sugar levels, we can readily see
how exercising can have positive benefits for the older population and can even
help significantly slow down the aging process.
Evans and Rosenberg and their colleagues at the U.S. Department of
Agriculture's Human Nutrition Center on Aging at Tufts University have found
that "the muscles of elderly people are just as responsive to weight
training as those of younger people." Startlingly, an 8-week program of
strength training by 87- to 96-year-old women confined to a nursing home
resulted in a tripling of strength and a muscle-size increase of ten percent.
(12)
Exercise is not a panacea but it can significantly help in areas
where traditional medicine is handing out perscriptions without properly
encouraging the elderly to be more active.
IV. Nutrition and the Elderly
If we now focus on nutrition and the aging process, we remember
that part of the aging process includes loss of taste buds, loss of smell,
vision problems, decrease in thirst, potential mouth and teeth problems making
it difficult or even painful to eat.
Also many elderly people live alone and are not motivated to cook
for themselves, or may even be afraid to cook for themselves.
And many elderly people are living on a fixed income and are
scrimping on the amount they spend on meals often buying the cheap fast food.
Food often tastes bitter so they
look for things that taste sweet.
There is also the problem of depression in the elderly which can
lead to increased use of alcohol and decreased desire to eat. Add digestive
problems, possible constipation due to dehydration, and plethora of medication
given to the elderly, you end up with a stage for poor eating habits. These
poor eating habits can lead to chronic fatigue, depression, and a weakened
immune system.
Kidney function declines so that by the time weÕre about 80 years
old it's only about 50-60% of what it was as a younger person. The result is
reduced ability to handle substances such as sodium, protein and vitamin D, and
reduced absorption of calcium. These changes can contribute to higher blood
pressure and osteoporosis.
Evidence from numerous sources indicate that a significant number
of elderly fail to get the amounts and types of food necessary to meet
essential energy and nutrient needs. (13)
And while there are many physical and clinical factors that can
contribute to undernutrition in the elderly, there are as many equally
important social and economic factors which can further complicate the
nutritional well-being of an older individual. Contributing factors include
loneliness, lack of cooking skills, depression, economic concerns, weakness and
fatigue, and, in too many cases, an unwarranted fear of many high quality,
nutrient dense, affordable foods. All these factors can contribute to the fact
that a significant number of older men and women consume less food than
required to meet energy and nutrient requirements, and are at moderate to high
nutritional risk. (13)
The nutritional risk of the elderly is no doubt affected by the
fact that the low-fat, low-cholesterol diet message has been heard loud and
clear by this population. (13) And there are cases where they are taking it to
the extreme, ignoring the need to have some fat and good fats in their diet.
The nutrients most often assessed as being consumed in low amounts
by the elderly are protein, calcium, zinc, folate, B12 and other B group
vitamins, fibre, vitamin D (also absorbed from sunlight), magnesium, and vitamin
E.
As in the general population, healthy eating is one factor in
reducing the risk of disease, including heart disease and diabetes. In addition
a balanced diet will reduce the need to take medications to deal with
nutrition-related problems such as constipation and osteoporosis (bone-thinning
disease).
The endocrine system consists of various glands and organs (such
as the thyroid gland) which release secretions into the blood or lymph system.
These secretions act on other organs in the body, influencing the way they
work. Changes in endocrine function lead to reduced immunity to disease, and
changes in levels of various hormones. One of the most dramatic age-related
hormone changes is a reduction in the production of oestrogen in women. This
changes the way the body absorbs calcium, and can increase the risk of
osteoporosis.
The brain needs glucose in the bloodstream in order to function.
Many older people go for prolonged periods without eating, due to lack of
interest, inability to get their own food, lonliness, depression, among other
reasons.
So it is clear that proper nutrition is an issue for many of the
elderly. And that poor nutrition can lead to dementia, osteoporosis, high blood
pressure, dehydration, fatigue, chronic fatigue, weakness, heart disease,
constipation, and even mimic althzeimers disease. By the converse, attention to
nutrition can help alliviate many of these symptoms that have been chalked up
to signs of aging.
V. Conclusions
Although proper exercise and nutrition will not stop or completely
stem the tide of the aging process, it is clear that both will enhance the
quality of later years. It is also clear from the early onset of many of the
aging processes that these areas should be attended to throughout life rather
than just at the later stages. However, it is never too late to start. As has
been previously discussed, studies have shown improvement in health (where
health is defined here as a lessoning of the symptoms of aging) at veru
advanced chronologicall years.
References:
1. http://www.bootlegbooks.com/Reference/Webster/data/509.html
2. Òhttp://www.apt.gc.ca/dDisabExpandE.asp?Action=''&Id=7
3. Exercise Etc Inc information on the Aging Process
4.http://www.csiro.au/index.asp?type=faq&id=Elderly&stylesheet=divisionFaq
5. Hayflick, L. (1985). Review Article. Theories of Biological
Aging. Experimental Gerontology, 20, 145-149.
6. Chodzko-Zajko & Ringle, 1987; Heikkinen et al.,1994; Kin
7 Tanaka, 1995
7. Fries JF, Crapo LM. (1981). Vitality and Aging. New York: WH
Freeman and Co. 8.http://www.who.int/moveforhealth/advocacy/information_sheets/elderly/en/index.html
9. American Council on Exercise, Exercise for the Older Adult,
1998
10. Imamura K., Ashida H., Ishikawa T., Fujii M. Human major
psoas muscle and sacrospinalis muscle in relation to age: a study by computed
tomography. J. Gerontol. 1983
11. Spirduso, W. W. (1975). Reaction and movement time as a
function of age and activity level. Journal of Gerontology
12. http://www.cbass.com/METABOLI.HTM
13. http://www.enc-online.org/elderly.htm
Appendix A: What
should an elderly person eat?
Since good nutrition is of
immense significance during old age, care should be taken that the diets of
elderly are nutritionally adequate and well balanced.
With the advancement of age,
the energy needs are reduced as a result the total quantum of food intake
intake is lowered while the requirement of most of the other nutrients remains
unaltered. Therefore, it becomes all the more important to provide adequate
amounts of all the nutrients within the decreased energy levels. It's
important to get plenty of variety. Plenty of bread and cereals, fruit and
vegetables, and some meat and dairy (or alternative) products are especially
important.
As elderly peoples' energy
requirements are generally lower it's good to avoid too many indulgences which
have lots of calories but few nutrients. Intake of energy rich foods like
sweets, fried or high fat foods, cereals and starches needs to be reduced while
liberal amounts of milk and milk products, fresh fruits, vegetables particularly
green leafy vegetables, should be included to meet the vitamin and mineral
needs. Avoiding excess energy intakes, while keeping physically active, will
help maintain a reasonable weight and mobility. Intake of simple sugars, should
be reduced as these provide only empty calories.
Food rich in fats, especially
saturated fats and trans fats, should be avoided and instead oils containing
high levels of poly unsaturated fatty acids such as sunflower oils, soyabean
oil etc. should be used to prevent and control the condition of hypertension
and other cardio-vascular diseases.
Plenty of fluids - and water
is the best thing to drink.
Plenty of fibre, plenty of
fluid, and moderate intake of sodium (eg. salt) is good for digestive and renal
function. Dietary fibre has a beneficial effect in various conditions
associated with aging such as constipation, diabetes and cardiovascular
diseases, adequate amount of food rich in dietary fibre should be included in
the diet. Increasing high fibre foods, such as wholegrain breads and cereals,
and fruit and vegetables, will also increase intake of other nutrients
including vitamins C, D, B6 and folic acid, iron and magnesium. An adequate
intake of calcium, in particular, should be ensured to compensate for its
losses due to gradual demineralization of bones associated with
aging.
And shut-ins who cannot use
the sunlight to produce Vitamin D may become D deficient, so ensuring they get
vitamin D rich foods is important.
With the advancement of age,
the capacity to digest and tolerate large meals often decreases. Therefore, the
quantity of food given at a time needs to be decreased. If required number of
meals can be increased as per the individual's tolerance
If the elder has sores in
his/her mouth or has denture problems or thrush or other painful mouth
exoperiences, modifications in consistency needs to be done. The diet should be
soft, well cooked and should include foods that need little or no mastication
such as milk and yogurts, soft cooked eggs, tender meats, gruels, soft cooked
vegetables, grated salads, fruit juices, soft fruits like banana or stewed
fruits.
The food for the elderly
should be colourful, attractive and tasty, without adding too much salt or
sugar, and should be served in pleasant surroundings so as to arouse their
appetite and interest in the food. Herbs and spices can add exciting
flavours.
(14)http://www.csiro.au/index.asp?type=faq&id=Elderly&stylesheet=divisionFaq
(15)
http://www.indiadiets.com/diets/Normal_diets/diet_in_oldage.htm
Appendix B:
Exercises for the elderly
(Developed by
Beth H. Macy for her 83 year old mother)
It is important
to wear loose, comfortable clothing and well-fitting, sturdy shoes. Your shoes
should have a good arch support, and an elevated and cushioned heel to absorb
shock.
Begin slowly.
Start with exercises that you are already comfortable doing. Starting slowly
makes it less likely that you will injure yourself. Starting slowly also helps
prevent soreness from "overdoing" it. The saying "no pain, no
gain" is not true. You do not have to exercise at a high intensity to get
most health benefits.
Warm up for five
minutes before each exercise session. Walking slowly on the treadmill and
stretching are good warm-up activities. You should also cool down with more
stretching for five minutes when you finish exercising.
Exercise is only
good for you if you are feeling well. Wait to exercise until you feel better if
you have a cold, flu, or other illness. If you miss exercise for more than two
weeks, be sure to start slowly again.
If your muscles
or joints are sore the day after exercising, you may have done too much. Next
time, exercise at a lower intensity. If the pain or discomfort persists, you
should talk to your doctor. You should also talk to your doctor if you have any
of the following symptoms while exercising:
* Chest pain
or pressure
* Trouble
breathing or excessive shortness of breath
* Light-headedness
or dizziness
* Difficulty
with balance
* Nausea
Remember to
either alternate days between upper and lower body or rest 24-48 hrs after
doing the entire body!!!
Exercises:
Upper body:
CHIN TUCKS:
Stand as erect as possible. Gently tuck
in your chin, creating a straight line from ear to shoulder. Repeat 3 times,
relaxing, breathing and holding for 10 seconds. Remember to hold the position,
not your breath.
BICEP CURLS:
WALL-UPS:
SHOULDER
SHRUGS:
Pull shoulders back as if a piece of
elastic were pulling your shoulder blades together in the back. Hold this
position 10 seconds, and relax. Repeat 3 times, relaxing, breathing, and
holding the position.
Start the
shoulder shrugs first without the weights then slowly work up to adding weight.
ARM RAISES:
Sit up tall in the chair,
slowly raise both arms out in front at shoulder level; keeping the head up pull
both arms backwards, so that the hands come back towards the shoulders.
Next elevate both arms up
straight towards the ceiling, bringing the arms back as close to the ears as
possible. Gently pull both arms down towards your shoulders again, keep your
head up.
If you experience any
discomfort or pain, STOP immediately.
LOWER BODY
Chair/Couch
Squats:
TOES UP:
Go up on your toes as high as possible
and come back down. Start out doing this 10 times and increase by five each
week until you build up to 20.
LEG LIFTS:
1) Holding on to a chair, stand up and
gently swing each leg back and forth 10 times. Repeat the motion out to the
side and back 10 times.
2) Sitting on a
chair raise your feet out straight in front and lower.
When this feels
good, add the ½ pound weights.
THIGH
STRENGTHENING:
Sit down on a flat surface with legs
extended and flat against the surface. Tighten the muscles on top of the thigh
as tightly as possible and hold. Hold for 10 seconds, trying each second to
tighten even tighter. Relax for 10 seconds and try again.
HEEL CORD
STRETCH:
Stand and face a wall with hands against the wall and heels flat.
Lean into the wall, feeling a stretch in your calf muscles. Hold for 30 seconds
and repeat.
HIP CLOCKS:
Standing in front of a mirror, gradually
make a big circle with your hips, as if there were a clock around your feet,
going around to one, then two, then three, etc. until the clockwise direction
is completed. Repeat the circle in a counterclockwise direction. Try to avoid
moving the shoulders.
GLUTEAL SETS:
Pinch the buttock together. Hold 5 seconds, and then relax. Repeat
10 times.
BALANCE:
Holding onto the back of a
chair stand on one foot. If comfortable, lift hand slightly off back of chair
and balance for 10 seconds without support. Repeat with other side.
Appendix C
– Bioflavonoids and antioxidants
I just need to add here a note on supplimenation, especially as
regards to bioflavonoids and antioxidants that are currently being peddled to
the elderly (and others) as the fountain of youth. Many "antioxidant"
products are marketed with claims that, by blocking the action free radicals,
they can help prevent heart disease, cancer, and various other conditions
associated with aging.
One of the health
food distributors is targetting itÕs marketing to the elderly for OPC-3 (as I
am sure others are).
Here is a blurb
marketing OPC from one of the websites:
ÒOPC-3 is a powerful combination of
plant-derived bioflavonoids, known as oligomeric proanthocyanidins, or OPC's.
Made from a unique combination of grape seed, pine bark and red wine extracts
(in addition to bilberry and citrus extracts), these OPC's are super-effective
free radical neutralizers. Not limited to just being strong antioxidants, OPCs
are also crucial in their role in supporting the circulatory system and
strengthening the capillaries. OPC-3 is a natural, great tasting supplement
that should be taken for a lifetime!
OPC-3
is a powerful combination of plant
derived bioflavonoids, know as oligomeric
proanthocyanidins (OPC's). It is made from a combination of grape seed,
pine bark and red wine extracts in
addition to bilberry and citrus extracts. These OPC's are super effective free radical neutralizers. They
are not limited to being strong
antioxidants, they are also crucial in their role in supporting the circulatory system and
strengthening the capillaries. OPC-3 is a natural food supplement that should
be taken for a lifetime.Ó (16)
However, most of the studies
on antioxidants and bioflavonoids have been negative or inconclusive. Until 1968, many doctors were prescribing
Bioflavonoids . Then in 1968, the FDA, relying on a review of literature
conducted by a panel of the National Academy of Sciences/National Research
Council, withdrew the bioflavonoid drugs from the marketplace, declaring that
they were ineffective in humans "for any condition". That FDA
directive stopped physicians from prescribing Bioflavonoids, But did nothing to
prevent consumers from purchasing them in health-food stores, usually in
combination with vitamin C. (17)
The evidence continues to mount against supplimentation with
antioxidants. Researchers from the University
of Washington have reported that patients taking antioxidant vitamins in
addition to statin and niacin therapy failed to increase their HDL cholesterol
(the "good" cholesterol) as much as patients not taking antioxidants.
These results, reported in the August 9, 2001 issue of Arteriosclerosis, Thorombosis, and
Vascular Biology, are but the
latest in a series of disappointing results in trials examining the ability of
antioxidants to prevent heart disease. The study from the University of
Washington, reported last week, brings up the possibility that antioxidant
therapy may do more than merely fail to halt the progression of coronary artery
disease. This new study suggests the possibility of harm.
(18)
Because
of the failure of randomized trials to demonstrate a benefit from taking
antioxidants, both the American Heart Association and the Institute of Medicine
have released recent statements saying that, while a diet rich in antioxidant
vitamins seems prudent, there is insufficient evidence to recommend using
supplements of of vitamin C, vitamin E, beta-carotine, selenium, or other
antioxidants to prevent heart disease.
(18)
And the American
Heart Association recommends getting antioxidants from your diet:
AHA
Scientific Position
The
American Heart Association doesn't recommend using antioxidant vitamin
supplements until more complete data are available. We continue to recommend
that people eat a variety of foods daily from all the basic food groups:
¥
six or more servings of breads,
cereals, pasta and starchy vegetables
¥
five servings of fruits and
vegetables
¥
two-to-four servings of fat-free
milk, low-fat dairy products
¥
up to six cooked ounces of lean
meat, fish, poultry
Eating
a variety of foods low in saturated fat and cholesterol will provide a rich
natural source of these vitamins, minerals and fiber. (19)
And other sources
show the harmful effects of supplimentation with antioxidants:
Free radicals are atoms or groups of atoms that have
at least one unpaired electron, which makes them highly reactive. Free radicals
promote beneficial oxidation that produces energy and kills bacterial invaders.
In excess, however, they produce harmful oxidation that can damage cell
membranes and cell contents. It is known that people who eat adequate amounts
of fruits and vegetables high in antioxidants have a lower incidence of
cardiovascular disease, certain cancers, and cataracts. Fruits and vegetables
are rich in antioxidants, but it is not known which dietary factors are
responsible for the beneficial effects. Each plant contains hundreds of
phytochemicals (plant chemicals) whose presence is dictated by hereditary
factors. Only well-designed long-term research can determine whether any of
these chemicals, taken in a pill, would be useful for preventing any disease.
The most publicized phytochemicals with antioxidant
properties have been vitamin C, vitamin E, and beta-carotene (which the body
converts into vitamin A). Evidence exists that vitamin E can help prevent
atherosclerosis by interfering with the oxidation of low-density lipoproteins
(LDL), a factor associated with increased risk of heart disease. However,
vitamin E also has an anticoagulant effect that can promote excessive bleeding.
In 1993, The
New England Journal of Medicine published two epidemiologic studies which found that
people who took vitamin E supplements had fewer deaths from heart disease
[1,2]. These studies did not prove that taking vitamin E was useful because
they did not rule out the effects of other lifestyle factors or consider death
rates from other diseases. Moreover, other studies have had conflicting
results. The only way to settle the question scientifically is to conduct
long-term double-blind clinical studies comparing vitamin users to nonusers and
checking death rates from all causes. (20)
The
first trial compared the effects of vitamin E (alpha-tocopherol),
beta-carotene, and a placebo among heavy smokers. The researchers found no
benefit from vitamin E and 18% more lung cancer among those who received beta-carotene.
In addition, the overall death rate of beta-carotene recipients was 8% higher,
and those who took vitamin E had a higher frequency of hemorrhagic stroke (20,
21)
More
recently, a double-blind clinical trial found that taking high doses of vitamins
C and E and beta-carotene did not reduce the odds of arteries reclogging after
balloon coronary angioplasty. (22)
In our quest for
youth and health we overlook the natureal way of getting our vitamins and
minerals is through our food. Although we have come a long way in our
knowledge, we do not yet know all of the complex mechanisms that go on in
ourfood and body to ensure balance. Eating a good diet with plenty of fruits
and vegetables is still our best course of action. No pill can replace that.
Many types of pills described as
"concentrates" of fruits and/or vegetables are being marketed.
However, it is not possible to condense large amounts of produce into a pill
without losing fiber, nutrients, and many other phytochemicals (23). Although
some products contain significant amounts of nutrients, these nutrients are
readily obtainable at lower cost from foods. (20)
We should
continue to look for ways to encourage people to eat balanced diets vs looking
for the answer in a pill bottle. There are valid cases for perscription drugs
and some supplementation (ex pregnant women, multivitamin usage, vitamin D for
shut ins), but we are looking for Ponce de LeonÕs fountain of youth and are
ignoring the fact that some things are inevitable and others take hard work to
stem or reverse.
(16)
http://www.isotonic-opc.com/
(17) http://www.earthtouch.com/04biofav.htm
(18)
http://heartdisease.about.com/mbiopage.htmFrom Richard N. Fogoros, M.D.,
(19)
http://www.americanheart.org/presenter.jhtml?identifier=4452
(20) http://www.quackwatch.org/03HealthPromotion/antioxidants.html
(21) Alpha-Tocopherol, Beta Carotene
Cancer Prevention Study Group. The effect of
vitamin E and beta carotene on the incidence of lung cancer and other cancers in male smokers. New England Journal of Medicine 330:1029-1035, 1994.
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