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FEEDING YOUR IMMUNE SYSTEM
- Vitamin C. Vitamin C
tops the list of immune boosters for many reasons. There has been more
research about the immune-boosting effects of Vitamin C than perhaps
any other nutrient. Vitamin C supplements are inexpensive to produce,
and it's available naturally in many fruits and vegetables. Also, you
can buy a vitamin-C-fortified version of just about anything. Here's
what the research shows about how this mighty vitamin protects your
body.
Vitamin
C increases the production of infection-fighting white blood cells and
antibodies and increases levels of interferon, the antibody that coats cell
surfaces, preventing the entry of viruses. Vitamin C reduces the risk of
cardiovascular disease by raising levels of HDL (good) cholesterol while
lowering blood pressure and interfering with the process by which fat is
converted to plaque in the arteries. As an added perk, persons whose diets
are higher in vitamin C have lower rates of colon, prostate, and breast
cancer.
You
don't have to take in massive amounts of vitamin C to boost your immune
system. Around 200 milligrams a day seems to be a generally agreed-upon
amount and one that can be automatically obtained by eating at least six
servings of fruits and vegetables a day. See Top
Seven Vitamin C-Containing Fruits. If you take vitamin C
supplements, it's best to space them throughout the day rather than take
one large dose, most of which may end up being excreted in the urine. I recommend
CITRIC C and CALLI TEA from Sunrider.
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TOP SEVEN VITAMIN C-CONTAINING FRUITS
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Fruit
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1. Guava, 1 medium
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2. Papaya, 1 cup, cubed
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3. Strawberries, 1 cup
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4. Kiwi, 1 medium
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5. Cantaloupe, 1 cup
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6. Orange, 1 medium
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7. Grapefruit, half
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- Vitamin E. This
important antioxidant and immune booster doesn't get as much press as
vitamin C, yet it's important to a healthy immune system.
Vitamin
E stimulates the production of natural killer cells, those that seek out
and destroy germs and cancer cells. Vitamin E enhances the production of
B-cells, the immune cells that produce antibodies that destroy bacteria.
Vitamin E supplementation may also reverse some of the decline in immune
response commonly seen in aging. Vitamin E has been implicated in lowering
the risk of cardiovascular disease. In the Harvard School of Public Health
study of 87,000 nurses, Vitamin E supplementation was shown to cut the risk
of heart attacks by fifty percent.
It's
not difficult to get 30 to 60 milligrams every day of Vitamin E from a diet
rich in seeds, vegetable oils, and grains, but it's difficult for most
people to consume more than 60 milligrams a day consistently through diet
alone. Supplements may be necessary to get enough vitamin E to boost your
immune system. I recommend ENERGY PLUS from Sunrider
You
need 100-400 milligrams per day, depending on your general lifestyle.
People who don't exercise, who smoke, and who consume high amounts of alcoholic
beverages will need the higher dosage. Those with a more moderate lifestyle
can get by with lower levels of supplementation.
- Carotenoids. Beta
carotene increases the number of infection-fighting cells, natural
killer cells, and helper T-cells, as well as being a powerful
antioxidant that mops up excess free radicals that accelerate aging.
Like the other "big three" antioxidants, vitamins C and E,
it reduces the risk of cardiovascular disease by interfering with how
the fats and cholesterol in the bloodstream oxidize to form arterial
plaques. Studies have shown that beta carotene can lower the risk of
cardiovascular disease, especially strokes and heart attacks, giving
scientific credence to the belief that a carrot a day can keep the
heart surgeon away. Beta carotene also protects against cancer by
stimulating the immune cells called macrophages to produce tumor
necrosis factor, which kills cancer cells. It has also been shown
that beta carotene supplements can increase the production of T-cell
lymphocytes and natural killer cells and can enhance the ability of
the natural killer cells to attack cancer cells.
Beta
carotene is the most familiar carotenoid, but it is only one member of a
large family. Researchers believe that it is not just beta carotene that
produces all these good effects, but all the carotenoids working together.
This is why getting carotenoids in food may be more cancer-protective than
taking beta carotene supplements. I recommend VITAFRUIT from
Sunrider.
The
body converts beta carotene to vitamin A, which itself has anticancer
properties and immune-boosting functions. But too much vitamin A can be
toxic to the body, so it's better to get extra beta carotene from foods and
let the body naturally regulate how much of this precursor is converted to
the immune-fighting vitamin A. It's highly unlikely that a person could
take in enough beta carotene to produce a toxic amount of vitamin A,
because when the body has enough vitamin A, it stops making it.
4.
Bioflavenoids. A group of phytonutrients
called bioflavenoids aids the immune system by protecting the cells of the
body against environmental pollutants. Bioflavenoids protect the cell
membranes against the pollutants trying to attach to them. Along the
membrane of each cell there are microscopic parking spaces, called receptor
sites. Pollutants, toxins, or germs can park here and gradually eat their
way into the membrane of the cell, but when bioflavenoids fill up these
parking spots there is no room for toxins to park. Bioflavenoids also reduce
the cholesterol's ability to form plaques in arteries and lessen the
formation of microscopic clots inside arteries, which can lead to heart
attack and stroke. Studies have shown that people who eat the most
bioflavenoids have less cardiovascular disease. A diet that contains a wide
variety of fruits and vegetables, at least six servings per day, will help
you get the bioflavenoids needed to help your immune system work in top
form. I recommend Alpha20C with NUPLUS or VITASHAKE from Sunrider
- Zinc. This
valuable mineral increases the production of white blood cells that
fight infection and helps them fight more aggressively. It also
increases killer cells that fight against cancer and helps white cells
release more antibodies. Zinc supplements have been shown to slow the
growth of cancer.
Zinc
increases the number of infection-fighting T-cells, especially in elderly
people who are often deficient in zinc, and whose immune system often
weakens with age. The anti-infection hype around zinc is controversial.
While some studies claim that zinc supplements in the form of lozenges can
lower the incidence and severity of infections, other studies have failed
to show this correlation. A word of caution: too much zinc in the form of
supplements (more than 75 milligrams a day) can inhibit immune function.
It's safest to stick to getting zinc from your diet and aim for 15 to 25
milligrams a day.
For
infants and children, there is some evidence that dietary zinc supplements
may reduce the incidence of acute respiratory infections, but this is
controversial. The best source of zinc for infants and young children is
zinc-fortified cereals. I recommend CITRIC C and METABALANCE 44
from Sunrider.
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RICH SOURCES OF
ZINC
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Food Source of
Zinc
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Serving Size
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Zinc (in
milligrams)
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Oysters
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6 medium
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76
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Zinc-fortified cereals
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1 ounce
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0-15
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Crab
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3 ounces
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7
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Beef
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3 ounces
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6
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Turkey, dark meat
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3 ounces
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3.8
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Beans
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1/2 cup
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1.2-1.8
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- Garlic. This
flavorful member of the onion family is a powerful immune booster that
stimulates the multiplication of infection-fighting white cells,
boosts natural killer cell activity, and increases the efficiency of
antibody production. The immune-boosting properties of garlic seem to
be due to its sulfur-containing compounds, such as allicin and
sulfides. Garlic can also act as an antioxidant that reduces the
build-up of free radicals in the bloodstream. Garlic may protect
against cancer, though the evidence is controversial. Cultures with a
garlic-rich diet have a lower incidence of intestinal cancer. Garlic
may also play a part in getting rid of potential carcinogens and other
toxic substances. It is also a heart-friendly food since it keeps
platelets from sticking together and clogging tiny blood vessels. I
recommend ALPHA20C from Sunrider
- Selenium. This mineral
increases natural killer cells and mobilizes cancer-fighting cells.
Best food sources of selenium are tuna, red snapper, lobster, shrimp,
whole grains, vegetables (depending on the selenium content of the
soil they're grown in), brown rice, egg yolks, cottage cheese, chicken
(white meat), sunflower seeds, garlic, Brazil nuts, and lamb chops. I
recommend METABALANCE 44 from
Sunrider
- Omega-3
fatty acids. A study found that children taking a half teaspoon of
flax oil a day experienced fewer and less severe respiratory
infections and fewer days of being absent from school. The omega 3
fatty acids in flax oil and fatty fish (such as salmon, tuna, and
mackerel) act as immune boosters by increasing the activity of
phagocytes, the white blood cells that eat up bacteria. (Perhaps this
is why grandmothers used to insist on a daily dose of unpalatable cod
liver oil.) Essential fatty acids also protect the body against damage
from over-reactions to infection. When taking essential fatty acid
supplements, such as flax or fish oils, take additional vitamin E,
which acts together with essential fatty acids to boost the immune
system. One way to get more omega-3 fatty acids in your diet is to add
one to three teaspoons of flax oil to a fruit and yogurt smoothie. I
recommend ENERGY PLUS from Sunrider. Children often
don't feel like eating following a cold or illness. Their nutrition
suffers and their immune system suffers. This accounts for the common
occurrence of getting
RECIPE FOR IMMUNE-BOOSTING SMOOTHIE
- ng one infection
after another. It's best to keep so well nourished that the
nutritional reserves can withstand several days of poor eating. Drink
this smoothie daily upon school entry in September, upon beginning
daycare, upon exposure to a contagious illness, or when you or your
child feels a cold coming on.
· 2 cups milk or soy or rice beverage (add more water if
needed)
· 1 cup plain nonfat yogurt
· 1 serving of a NUPLUS or VITASHAKE
1 tbsp.Vitafruit
· one frozen banana, cut up
· 1/2 cup frozen blueberries
· 1/2 cup each of your favorite fruit, frozen (e.g., organic
strawberries, papaya, mango)
· 1 tbsp. flax oil or 2 tbsp. flaxseed meal (Because fiber
steadies the absorption of carbohydrates and therefore contributes to a
steadier blood sugar we suggest using rich sources of fiber, such as
flaxseed meal (i.e., ground flax seeds, containing both the oil and fiber),
although flax oil has a more palatable consistency than flaxseed meal. For
additional fiber, if you don't mind an even grainier texture, add 1 tbsp.
or more of oat bran.)
· 3 ounces tofu
· 2 tbsp. peanut butter (optional)
Combine all the ingredients
and blend until smooth. Serve immediately after blending while the mixture
still has a bubbly milkshake-like consistency.
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HABITS THAT WEAKEN THE IMMUNE SYSTEM
Certain foods and environmental influences can keep the immune
system army from doing a good job. Watch out for these threats to your
body's defenses.
- Overdosing
on sugar.
Eating or drinking 100 grams (8 tbsp.) of sugar, the equivalent of
about two cans of soda, can reduce the ability of white blood cells to
kill germs by forty percent. The immune-suppressing effect of sugar
starts less than thirty minutes after ingestion and may last for five
hours. In contrast, the ingestion of complex carbohydrates, or
starches, has no effect on the immune system.
- Excess
alcohol.
Excessive alcohol intake can harm the body's immune system in two
ways. First, it produces an overall nutritional deficiency, depriving
the body of valuable immune- boosting nutrients. Second, alcohol, like
sugar, consumed in excess can reduce the ability of white cells to
kill germs. High doses of alcohol suppress the ability of the white
blood cells to multiply, inhibit the action of killer white cells on
cancer cells, and lessen the ability of macrophages to produce tumor
necrosis factors. One drink (the equivalent of 12 ounces of beer, 5
ounces of wine, or 1 ounces of hard liquor) does not appear to bother
the immune system, but three or more drinks do. Damage to the immune
system increases in proportion to the quantity of alcohol consumed.
Amounts of alcohol that are enough to cause intoxication are also
enough to suppress immunity.
- Food
allergens.
Due to a genetic quirk, some divisions of the immune army recognize an
otherwise harmless substance (such as milk) as a foreign invader and
attack it, causing an allergic reaction. Before the battle, the
intestinal lining was like a wall impenetrable to foreign invaders.
After many encounters with food allergens, the wall is damaged,
enabling invaders and other potentially toxic substances in the food
to get into the bloodstream and make the body feel miserable. This
condition is known as the leaky gut syndrome.
- Too much
fat.
Obesity can lead to a depressed immune system. It can affect the
ability of white blood cells to multiply, produce antibodies, and rush
to the site of an infection.
HOW
YOUR IMMUNE SYSTEM WORKS- Why We ALL NEED A SUNPACK!
An army of millions of microscopic soldiers operates within
you, each one ready to spring into battle against invading germs and to do
sentry duty to prevent disease from occurring in the first place. How you
feed these soldiers has a great influence on how well they protect you from
germs and disease. Because of poor diets, many school-age children and
adults have immune systems that don't operate at peak efficiency. They get
sick more often. Here's how to have a well-nourished immune system.
Think of the immune system as
an army in which each division has a specific job, depending on the enemy
they are fighting. Let's meet the troops to see what each kind of defender
does.
White blood cells are the
body's infantry, the hard-working soldiers on the front lines. These cells
patrol the highway of the body's bloodstream, preventing germs from gaining
a foothold. There are millions of these microscopic fighters in each drop
of blood. There are also many specialized units. For example, when enemy
cells try to hide from the main white cell troops, specialized units of
white cells, called macrophages (the word means "big eaters"),
mount search-and-destroy missions, going into all the nooks and crannies of
the body to gobble up harmful invaders.
Suppose a flu virus enters
your body, multiplies rapidly, and threatens to overwhelm the circulating
white cell army. The main troops can call out the reinforcements. These
specialized cells include T-lymphocytes (white cells that originate in the
thymus, a tiny gland in front of the heart) and even a special SWAT team
called killer lymphocytes.
Chemical messengers
and fighters. The immune army has a magnificent communication system. If a
germ enters the body through a break in the skin or maybe an infection in
the throat the white cells send out chemical messengers that quickly
mobilize reinforcements and direct them to the area of infection. Once they
reach the battle, these cells produce chemical fighters, known as cytokines
(meaning molecules that move to the cells). These cytokines perform all
kinds of functions around the infection site to surround the invaders and
heal the havoc the enemy has created. They dilate the blood vessels,
causing more blood flow and enabling more white cell police to enter the
infected area of battle. One well-known cytokine, interferon, even sends a
signal back to command headquarters to tell the brain the body needs to
rest. This allows the body to concentrate its energies on the battle
against the disease. Another important cytokine is called the tumor
necrosis factor. It can gobble up cancer cells that are acting like
traitors and weakening the body from within. Another task of these cytokine
messengers is to tell the body to conserve supplies, such as important
nutrients that are needed to win the infection battle. For example, the
command center instructs the body to hold onto immune-boosting elements,
such as zinc, rather than eliminating it through the kidneys.
Chemical weapons. The
army of white cells and chemical messengers have a number of chemical
weapons available. They can shoot gamma-interferon into the enemy, like a
poisonous dart. This substance interferes with the body's ability to
reproduce itself. Another special group of white cells, called B-cells,
produces chemicals called antibodies, which act like smart missiles,
seeking out and attaching themselves to specific germs. Some of these antibodies,
called immunoglobulins, poke holes in the germs, so that in essence it
"bleeds" to death. Others act like a chemical glue, making the
germs stick together so that they can be rounded up easily by the white
blood cells. The immune army also guards strategic entry points to the
body, such as the respiratory and gastrointestinal tracts. Within the mucus
that lines these passages, specialized immunoglobulin antibodies called
secretory IgA patrol the walls and prevent bacteria and allergens from invading
the tissues.
The most fascinating aspect
of this immune army is the remarkable memory it possesses. It remembers
every past battle and learns from experience. If the same, or a similar,
germ tries to attack again, the army is ready for it. It recognizes the
invader and pounces on it, winning every time. This is the rationale behind
immunizations. The small dose of killed virus given in an immunization sets
up a training exercise for the immune army. It uses the lessons learned in
training to overcome threats from the real germ.
Problems in the ranks.
While the immune system works well most of the time, some germs, like the
herpes virus, are particularly adept at evading attacks. Herpes can lie
undetected in the tissues for long periods of time, only to come out and
spread when the army's defenses are down. Then it retreats back into its
hideout, lying dormant for months or years before it wages another attack.
Some viruses, such as HIV, can even hide within the immune system itself,
infiltrating the ranks of the army and destroying it from within.
Cancer cells are another
tough challenge to the immune system. These are cells whose internal
control mechanism is damaged, allowing the cells to multiply out of
control. Most of the time the immune army quickly recognizes these
"criminal" elements and eliminates or jails them before they
cause damage. Sometimes the cancer culprits go unnoticed for a while, and
by the time they are detected, the immune system is powerless to stop them.
The battle spreads to other parts of the body (a disease process called
metastasis).
Sometimes the immune army
mutinies and attacks the very organs it is supposed to defend. Examples of
this include diseases such as arthritis (antibodies attacking tissues of
the joints), diabetes (antibodies attacking insulin-producing cells in the
pancreas), and perhaps multiple sclerosis (in which the immune system may
be attacking the myelin sheath of the nerves).
Finally, there are times when
the immune system overreacts, in effect, burning an entire village to kill
a few terrorists. This hypersensitive response can be triggered with an
allergy. The army of white cells not only engulfs the invading allergen,
such as a particle from a dust mite in the bedroom, but also releases
enough chemicals in this battle to cause other problems, such as wheezing
or rashes.
BOOST
YOUR CHILD'S IMMUNE SYSTEM
Do your children seem to catch more than their fair share of
illnesses? Here are some ways you can boost their immune system and keep
them in school. Take as many of these supplements as you feel is
appropriate every day:
- Vitamin C - this
simple vitamin can fight off invading germs. Younger kids up to age 6
will benefit from around 250 mg per day. Older kids and adults can
take 500 mg per day. Available as a chewable. I recommend
CITRIC C from Sunrider
- Probiotics - the
common name used for this is Acidophillus. These are healthy bacteria
that live in our intestines and help with our immune system. The best
species of probiotics are lactobacillus and bifidobacteria. Available
as powder, children and adults can take as directed. I
recommend VITADOPHILUS from Sunrider
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