Nutrients
There are
seven groups of nutrients which the human body needs to stay
healthy - Protein, Carbohydrates,
Fats, Vitamins, Minerals,
Roughage (Dietary Fiber), and Fluid
(water). Also, see the Recommended Dietary Allowance
Of Nutritional Elements
1.
Protein
There
is a popular misconception that meat is the only real source of protein,
and thus that a vegetarian diet is inherently unhealthy due to a lack
of protein. It is impossible to stress how untrue this is.
First
of all, the Recommended Daily Allowance of protein
is not as high as one might think, and many people - vegetarian or
not - eat more protein than their bodies actually need. The approximate
RDA of protein is only 47 grams for women and 54 grams for men.
Secondly,
there are many protein-rich vegetarian and vegan foods. The only problem
is that vegetable sources of protein, with the exception of soybeans,
are not complete proteins, so you need to eat more than one in order
to get the complete protein.
Vegan
sources of protein
-
Cereals
and grains - wheat, rye, corn...
-
Leafy
green vegetables, including spinach
-
Legumes
- beans, lentils, peas, peanuts
-
Nuts
- almonds, walnuts, cashews...
-
Seaweed
- kelp, spirulina...
-
Seeds
- sesame, sunflower...
-
Soy
products - tofu, tempeh, soy milk...
-
Vegetables
- Brussel sprouts, new potatoes, yuca
Ovo-lacto
sources of protein
As
long as vegetarians (and everyone else, for that matter) eat a wide
variety of foods, they will easily manage to eat enough protein -
not to mention other nutrients.
If
you want to be absolutely certain that you are getting enough protein,
you should eat food combinations which form a complete protein, such
as:
-
Legumes
+ seeds
-
Legumes
+ nuts
-
Legumes
+ non-dairy milk
-
Grains
+ legumes
-
Grains
+ non-dairy milk
Note
that these combinations don't necessarily have to be eaten at the
same time; you can eat one several hours after the other and still
benefit from the complete protein.
As
you can see, there are plenty of vegetarian sources of protein, so
the next time some "carnivore" says your diet is unhealthy, you'll
know how to respond.
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2.
Carbohydrates
Carbohydrates
are sometimes also called carbs or carbos, and your body can make
them. Carbs come in two different types: sugars and starches. Sugars
are called simple carbohydrates. They are called
simple because your body digests them quickly and easily. Simple carbs
are usually sweet tasting, like cookies, candy, soda, and other sugary
foods. And some foods from nature - like many fruits - are sources
of simple carbohydrates.
Starchy
carbohydrates are called complex carbohydrates. These
carbohydrates take longer to be digested than simple carbohydrates
do. Complex carbs are found in foods like bread, noodles, and rice,
and in lots of tasty veggies.
Why
Do We Need Carbohydrates?
Carbohydrates
have an important job: giving all the cells in your body the energy
they need! When you eat foods with carbohydrates in them, your body
breaks them down into two different types of fuel.
For
energy that you'll use right away, your body takes those carbs and
turns them into glucose. Glucose is carried in
your blood to all the cells in your body, and gives you energy.
It powers every part of your body. Glucose lets you run, jump, think,
blink, breathe, and more. Want to swim up and down the coast? Or
just make a tiny piece of toast? Whatever you do, as long as you're
using your body, you need the great power of glucose. Have you ever
felt hungry and found it kind of hard to think? That's because you
were running out of glucose, and your brain needed more fuel.
But
your cells can only use so much glucose at one time. So when there
is glucose left over that can't be used right away, your cells save
it. This leftover glucose is stored in your liver and muscles, and
is called glycogen. The glycogen that doesn't fit
into your liver and muscle cells is turned to fat.
Glycogen
hangs out until it's needed, and is then released for quick energy
when you're exercising. Your body decides to release the power from
either glycogen or fat depending on the type of sport or activity
you're doing, and how long you're doing it. If you're sprinting
or doing another quick exercise, your body calls on glycogen for
energy. But if you are exercising for a long time, your body turns
to its "reserve tank" of fuel for energy: fat.
Deficiency Of Carbohydrates
When a person is on a carbohydrate-free diet, protein
is used as energy source but the excessive breakdown of proteins to
sugars can lead to excessive ketones being formed in the liver and
in strict studies these people exhibited the same symptoms as those
on a starvation regimen.
Symptoms include abnormal fat metabolism, breakdown
of body protein, increased sodium excretion, loss of energy and fatigue.
It has been found that small amounts of carbohydrates, between 50
to 100 g, can prevent these symptoms.
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3.
Fats
"How
many fat grams does that have in it?" How
many times have we had this line rammed down our throats over the
last few years? Too many!
Some
people will mow the word 'fat' completely out of their diet and end
up looking like Uncle Fester in the process. This article explains
why fat is one of the essential ingredients to a healthy diet…
There
are so many different fat terms - saturated fat, polyunsaturated fat,
monounsaturated fat, etc. How did that little three-letter word blow
up into a seven-syllable word? Scary, isn't it? However, that three-letter
word plays a very significant, very vital part in our diet and overall
level of health and fitness.
Most
health associations and organizations recommend that you get no more
than 30% of your calories from fat. Generally, people are more concerned
about getting too much fat into their diet rather than not enough.
Although too much fat in the diet isn't healthy, too little fat can
have some very serious consequences.
Fats
and oils are a concentrated source of energy and are necessary for
good health and fitness. These are some of the side effects that can
occur when too much fat is trimmed from the diet:
-
hair can fall out faster than fleas off of a turkey's back;
- if one is lucky and manages to keep their hair, odds are that it
will lose luster and sheen;
- nails can become so brittle, or so hard and curly that they can
be used as next year's Christmas ribbon;
- without fat, vital organs will lack cushion;
Fats
make up part of all body cells, help us maintain body temperature,
and even delay hunger pangs.
Fats
in the form of monounsaturated fat help raise levels of protective
HDL cholesterol. Some of the foods that are a good source for monounsaturated
fat are the almond and the avocado.
Polyunsaturated
fat is valued for its ability to help lower total cholesterol. Safflower
oil has the highest amount of polyunsaturated fat of all the common
varieties of oil.
Saturate
or Not
Fatty
acids are saturated when they are loaded or saturated with all the
hydrogen atoms they can carry, such as those in meats, dairy products
and certain tropical oils such as coconut, palm and palm-kernel
oils. Fatty acids with two or more pairs of hydrogen atoms missing,
like the main fats in corn, soybean and other vegetable oils as
well as in fish oils are polyunsaturated.
Since
changing even a single atom in a molecule can profoundly affect
the chemical properties, saturated and unsaturated fats have very
different effects on health. Saturated fats have been associated
with raising blood cholesterol levels, which accumulates on the
artery walls and eventually restricts blood flow – especially
to the heart. A high saturated diet is also linked to obesity and
certain cancers.
Monounsaturated
(from the likes of olive oil) and polyunsaturated fats (from plants
and fish) can actually reduce blood-cholesterol levels by spurring
the liver to clear cholesterol from the blood. Omega-3 fatty acids
help to protect the heart against cardiovascular disease by inhibiting
the formation of blood clots, lowering triglyceride levels and stopping
the plaque growth that narrow the arteries leading to the heart.
To effectively increase body stores of EPA and DHA (omega-3 main
components), it is recommended to consume fatty fish, soybeans,
and flaxseed regularly.
Fatty
Acid Balance
The
American Heart Association recommends maintaining a fatty-acid balance
of 1 : 1 : 1 (saturated : polyunsaturated : monounsaturated) fatty
acids. Although studies are still being conducted to better define
the best fatty acid balance for optimal health, it is known that
the ratio of omega-6s to omega-3s in the body is important. While
the ideal ratio is believed to be 5:1, the ratio in the typical
Western diet has shifted to the range of 10:1 to 40:1. Such a skewed
ratio could have life-threatening consequences such as heart abnormalities
as well as promoting inflammatory diseases such as rheumatoid arthritis
and asthma.
The
omega imbalance is probably due to an excessive intake of commercial
vegetable oils and a limited intake of fish. The trend began in
the 1960’s when Americans were advised to replace foods high
in saturated fats and cholesterol with polyunsaturated fats. At
the same time, more processed foods, low in omega-3 fatty acids,
were being manufactured and consumed.
Currently,
there is no US dietary guideline for omega-3s, but many experts
consider 3 grams daily a reasonable amount. As further research
is carried out, new information on fatty acids and their effects
is sure to follow.
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4.
Vitamins
There
are two types of vitamins: fat-soluble and water-soluble.
When you eat foods that contain fat-soluble vitamins,
the vitamins are stored in the fat tissues in your body and in your
liver. They go and wait around in your body fat until your body needs
them. Fat-soluble vitamins are happy to stay stored in your body for
awhile - some stay for a few days, some for up to six months! Then,
when it's time for them to be used, special carriers in your body
take them to where they're needed. Vitamins A, D, E, and K are all
fat-soluble vitamins.
Water-soluble
vitamins are different. When you eat foods that have water-soluble
vitamins, the vitamins don't get stored as much in your body. Instead,
they travel through your bloodstream. They like to travel quickly,
compared with the fat-soluble vitamins, which like to hang around.
And whatever your body doesn't use comes out when you urinate. So
these kinds of vitamins need to be replaced often, since they don't
like to stick around! This crowd of vitamins includes vitamin C and
the big group of B vitamins - B1 (thiamin), B2 (riboflavin), niacin,
B6 (pyridoxine), folic acid, B12 (cobalamine), biotin, and pantothenic
acid.
The
Fat Soluble Vitamins - A, D, E, and K
In
recent years we've heard nutritionists extol the virtues of low-fat
diets. However, some fat is necessary for the body to absorb certain
vitamins such as A, D, E, and K. Fat is absorbed in the small intestine.
For people who have Crohn's disease fat absorption is a particular
problem. A small intestine that has undergone surgery to remove diseased
sections or is inflamed could impair the ability to absorb fat and
the fat-soluble vitamins.
Vitamin
A
Your
mother may have told you to eat your carrots because they are good
for eyesight. Don't look now, but your mother was right. Vitamin
A, also known as beta-carotene or retinol, is not only important
for vision but also for bones, skin and reproductive organ growth,
hormone creation, and tissue repair.
Vitamin A also helps the body fight infection in at least two ways.
Lymphocytes are white blood cells that fight off infection in the
body. Lymphocytes need vitamin A to function properly and protect
the body from harmful infections. Vitamin A is also important for
maintaining the linings of the eye, mucous membranes, and the respiratory,
urinary, and intestinal tracts. These linings work to prevent bacteria
and viruses from entering the body and causing infections.
Deficiencies in vitamin A can cause night blindness, hinder bone
growth, increase susceptibility to infection, and cause rough skin.
Diarrhea, inflammation in the small intestine, and malabsorption
of fat can all contribute to a loss of vitamin A. Symptoms of deficiency
include night blindness, dry skin, and increased infections such
as colds, flues, pneumonia, and bronchitis.
Healthy adults can have up to one year's worth of vitamin A stored
in the liver (which explains the high content of vitamin A in animal
liver), while children may have only a few weeks' worth. Therefore,
children with IBD may need close monitoring during bouts of inflammation
and diarrhea. Too much vitamin A can be toxic, so supplements should
be used with care.
Vitamin A can be found in many foods, but these in particular have
significant amounts:
-
Liver
-
Carrots
-
Sweet
potatoes
-
Spinach
-
Cantaloupe
-
Kale
-
Red
Peppers
-
Broccoli
-
Mangos
-
Apricots
Vitamin
D
Vitamin
D, calciferol, is a fat-soluble vitamin. It is found in food, but
also can be made in your body after exposure to ultraviolet rays
from the sun. Vitamin D exists in several forms, each with a different
activity. Some forms are relatively inactive in the body, and have
limited ability to function as a vitamin. The liver and kidney help
convert vitamin D to its active hormone form.
The
major biologic function of vitamin D is to maintain normal blood
levels of calcium and phosphorus. Vitamin D aids in the absorption
of calcium, helping to form and maintain strong bones. It promotes
bone mineralization in concert with a number of other vitamins,
minerals, and hormones. Without vitamin D, bones can become thin,
brittle, soft, or misshapen. Vitamin D prevents rickets in children
and osteomalacia in adults, which are skeletal diseases that result
in defects that weaken bones.
Food
Sources
Fortified
foods are the major dietary sources of vitamin D. Prior to the
fortification of milk products in the 1930s, rickets (a bone disease
seen in children) was a major public health problem in the United
States. Milk in the United States is fortified with 10 micrograms
(400 IU) of vitamin D per quart , and rickets is now uncommon
in the US.
One
cup of vitamin D fortified milk supplies about one-fourth of the
estimated daily need for this vitamin for adults. Although milk
is fortified with vitamin D, dairy products made from milk such
as cheese, yogurt, and ice cream are generally not fortified with
vitamin D. Only a few foods naturally contain significant amounts
of vitamin D, including fatty fish and fish oils.
Exposure
To Sunlight
Exposure
to sunlight is an important source of vitamin D. Ultraviolet (UV)
rays from sunlight trigger vitamin D synthesis in the skin. Season,
latitude, time of day, cloud cover, smog, and suncreens affect
UV ray exposure. For example, in Boston the average amount of
sunlight is insufficient to produce significant vitamin D synthesis
in the skin from November through February. Sunscreens with a
sun protection factor of 8 or greater will block UV rays that
produce vitamin D, but it is still important to routinely use
sunscreen whenever sun exposure is longer than 10 to 15 minutes.
It is especially important for individuals with limited sun exposure
to include good sources of vitamin D in their diet.
Vitamin
D And Osteoporosis
It
is estimated that over 25 million adults in the United States
have, or are at risk of developing osteoporosis. Osteoporosis
is a disease characterized by fragile bones. It results in increased
risk of bone fractures. Having normal storage levels of vitamin
D in your body helps keep your bones strong and may help prevent
osteoporosis in elderly, non-ambulatory individuals, in post-menopausal
women, and in individuals on chronic steroid therapy.
Researchers
know that normal bone is constantly being remodeled (broken down
and rebuilt). During menopause, the balance between these two
systems is upset, resulting in more bone being broken down (resorbed)
than rebuilt. Estrogen replacement, which limits symptoms of menopause,
can help slow down the development of osteoporosis by stimulating
the activity of cells that rebuild bone.
Vitamin
D deficiency, which occurs more often in post-menopausal women
and older Americans, has been associated with greater incidence
of hip fractures. A greater vitamin D intake from diet and supplements
has been associated with less bone loss in older women. Since
bone loss increases the risk of fractures, vitamin D supplementation
may help prevent fractures resulting from osteoporosis.
In
a group of women with osteoporosis hospitalized for hip fractures,
50 percent were found to have signs of vitamin D deficiency. Treatment
of vitamin D deficiency can result in decreased incidence of hip
fractures, and daily supplementation with 20 mcg (800 IU) of vitamin
D may reduce the risk of osteoporotic fractures in elderly populations
with low blood levels of vitamin D. Your physician will discuss
your need for vitamin D supplementation as part of an overall
plan to prevent and/or treat osteoporosis when indicated.
Vitamin
K
Vitamin
K is used for the body to regulate blood clotting. A deficiency
in vitamin K can result in bruising or, in rare cases, bleeding.
The relationship between vitamin K deficiency and the onset of osteoporosis
is an ongoing debate in the medical community. The National Institutes
of Health maintain that currently, there is not enough information
to either prove or disprove this theory.
Vitamin K is unusual because it is actually made inside the body.
The "good" bacteria in the large intestine actually synthesize
vitamin K for use by the body. About 80% of vitamin K needed is
made in this way. The other 20% must come from food sources. If
the "good" bacteria in the intestine is wiped out by antibiotics
or affected by diarrhea, vitamin K production may be decreased.
Vitamin K can be toxic in large does, and supplements should be
used with care. Those taking the prescription drug Coumadin (Warfarin
sodium) should not take vitamin K from supplements or food sources.
Vitamin K is found in various foods including:
- Cabbage
- Cauliflower
- Spinach
And Other Green Leafy Vegetables
- Cereals
- Soybean
Vitamin
E
Vitamin
E has eight different forms, each with it's own purpose in the body.
The form that is most often used by our bodies is alpha-tocopherol.
Vitamin E in the form of alpha-tocopherol is an antioxidant that
removes free radicals from the body. Free radicals are a natural
result of the metabolic process (the use of glucose by the body
for fuel). If not removed from the body, free radicals can cause
damage to the cells in the body. This cell damage may contribute
to cancer or heart disease. The use of vitamin E to prevent these
chronic illnesses is still being studied.
People who don't absorb fat well in their intestines are at risk
for a deficiency of vitamin E. If fat is passing through the intestines
unabsorbed, it often results in greasy looking stools and/or diarrhea.
Too much vitamin E in the body is associated with very few health
risks, but the long-term effects of vitamin E supplementation are
still unknown.
Vitamin E can be found in both natural and fortified foods, including:
- Wheat
Germ Oil
- Almonds
- Safflower
Oil
- Corn
Oil
- Peanuts
Before starting any program of supplements, talk to your doctor.
Vitamin deficiencies are rare in the United States as most people
get all the vitamins they need from food.
Water
Soluble Vitamins
Water-soluble
vitamins consist of members of the vitamin B complex and vitamin
C. They are generally found together in the same foods with the
exception of B12 which is present only in meat and dairy
foods. The others are found in whole grain cereals, legumes, leafy
green vegetables, and fruits. The water-soluble vitamins generally
function to assist the activity of important enzymes such as those
involved in the production of energy from carbohydrates and fats.
They are often referred to as "cofactors". Other roles
may be defined with further research. The water-soluble vitamins
are not stored to a great extent in the body so frequent consumption
is necessary. When present in excess of the body's needs, they are
excreted in the urine. Because they are readily excreted, they are
generally non-toxic, although symptoms have been reported in some
individuals taking megadoses of niacin, vitamin C or pyridoxine.
The lack of water soluable vitamins most greatly affects tissues
that are growing or metabolizing rapidly such as skin, blood, the
digestive tract and nervous system. These molecules present in fruit,
vegetables and grains are all unstable in the presence of heat so
that processing and cooking methods can greatly affect the amount
of vitamin actually available in food.
Vitamin B Complex The
vitamin B complex is traditionally made up of 10 members (listed
below) that differ in their biological actions, although many participate
in energy production from carbohydrates and fats. They were grouped
together into a single class because they were initially isolated
from the same sources, liver and yeast.
Thiamine
(Vitamin B1) is important for energy metabolism
and in the initiation of nerve impulses. A deficiency of thiamine
causes a condition known as beriberi. In certain parts of the world
where the diet consists largely of polished rice, this condition
is frequently seen. In these countries, a deficiency in mothers
can cause a deficiency in infants and may lead to death. In the
US, thiamine deficiency is most commonly seen in alcoholics, although
it can occur in the presence of several diseases. Pregnancy increases
thiamine requirements slightly and when a pregnancy is associated
with a prolonged period of vomiting and/or poor food intake, thiamine
deficiency may result.
The major symptoms of the deficiency are related to the nervous
system (i.e. sensory disturbances, muscle weakness, impaired memory)
and the heart (i.e. shortness of breath, palpitations, and heart
failure). Wernickes syndrome is a serious complication of
alcoholism and thiamine deficiency that may manifest as impaired
muscle coordination, impaired ability to move the eyes, and marked
confusion. It may lead to Korsakoffs psychosis, a chronic
disorder in which memory and learning are impaired.
Thiamine is used to treat thiamine deficiency. There are many unproven
uses of thiamine including a treatment for poor appetite, canker
sores, motion sickness, poor memory, fatigue and as an insect repellant.
The RDA for women over 18 years is 1.1 mg; for pregnant women, 1.4
mg; for lactating women, 1.5 mg; and for men over 14 years, 1.2
mg.
Riboflavin (Vitamin B2) is important
in promoting the release of energy from carbohydrates, fats and
proteins. It also aids in maintaining the integrity of red blood
cells. Riboflavin deficiency can occur most frequently in people
with long-standing infections, liver disease, and alcoholism. A
sore throat and sores at the corners of the mouth are generally
the first symptoms of a deficiency. This can be followed by a swollen
tongue, seborrheic dermatitis, anemia and impaired nerve function.
These manifestations are commonly seen in other diseases, including
many vitamin deficiencies. The RDA for women over 18 years is 1
mg; for pregnant women, 1.4 mg; for lactating women, 1.6 mg, and
for men over 14 years, 1.3 mg.
A deficit of cellular energy metabolism may play a role in migraine
headaches. A recent study indicated that high-dose (400 mg/day)
riboflavin was effective in decreasing the frequency of migraines.
Further studies are needed to confirm this effect. High dose riboflavin
can cause a yellow-orange fluorescence or discoloration of the urine.
Nicotinic acid (Niacin, Vitamin B3)
is important for the release of energy from carbohydrates and fats,
the metabolism of proteins, making certain hormones, and assisting
in the formation of red blood cells. Niacin deficiency causes pellagra,
a condition that affects the skin (dermatitis), GI tract (i.e. diarrhea,
nausea, vomiting and swollen tongue) and nervous system. (i.e. headache,
depression, impaired memory, hallucinations and dementia). Frequent
causes of a deficiency include a poor diet, isoniazid therapy (used
in the treatment of tuberculosis) and carcinoid tumors. Rarely a
deficiency can occur in the presence of hyperthyroidism, , cirrhosis,
pregnancy or lactation.
Dietary niacin and niacin formed within the body from the amino
acid tryptophan are converted to niacinamide. Niacinamide (nicotinamide)
is the biologically active form of niacin and it may be preferred
as a supplement because it lacks the flushing effects of niacin.
The RDA for women over 14 years is 14 mg; for pregnant women, 18
mg; for lactating women, 17 mg; and for men over 14 years, 16 mg.
Niacin is used for the treatment of niacin deficiency but at large
doses is also used to treat high cholesterol and triglycerides.
High doses should only be taken under the supervision of a physician
because there is a risk of developing serious side effects such
as liver dysfunction. There are also several medical conditions
that may be worsened by its use at the high, therapeutic doses.
It can cause the release of histamine resulting in increased gastric
acid, therefore it is generally not used in the presence of an active
peptic ulcer. Large amounts can also decrease uric acid excretion,
possibly precipitating a gout attack in people predisposed to this
condition, and it can impair glucose tolerance, interfering with
blood sugar control in diabetics. In the treatment of high cholesterol
the simultaneous use of niacin withdiabetes mellitus drugs that
inhibit cholesterol formation, known as the HMG-CoA reductase inhibitors
(i.e. Lipitor®, Baycol®, Mevacor®, Zocor® and Pravachol®)
increases the occurrence of serious muscle disorders.
Due to common side effects (flushing, nausea, dizziness, itching,
low blood pressure), many people do not tolerate high doses of niacin,
even though some may lessen in intensity with continued usage.
Pyridoxine (Vitamin B6) is necessary
for the proper function of over 60 enzymes that participate in amino
acid metabolism. It is also involved in carbohydrate and fat metabolism.
A deficiency in adults mainly affects the skin (seborrhea-like lesions
around the eyes, nose and mouth), mucous membranes, peripheral nerves
and blood forming system. Convulsive seizures may also occur. Deficiencies
can manifest in people with kidney disease, cirrhosis, alcoholism,
impaired gastrointestinal absorption (malabsorption), congestive
heart failure and hyperthyroidism.
The RDA for pyridoxine in women from 19-50 years of age is 1.3 mg;
women over 50 years, 1.5 mg; for pregnant women, 1.9 mg; for lactating
women, 2 mg; for men 14 to 50 years of age, 1.3 mg; and for men
over 50 years, 1.7 mg. Prolonged doses in excess of 200 mg. per
day have been associated with neurotoxicity. Pyridoxine may be effective
in lowering high levels of homocysteine, a risk factor for heart
disease, decreasing the symptoms of premenstrual syndrome, as an
adjunct to other treatments for improving behavior in autism, and
for reversing some of the side effects of flurouracil in cancer
patients. It is also used in treating some metabolic disorders.
Several drugs can increase the pyridoxine requirement, such as hydralazine,
isoniazid and oral contraceptives. Simultaneous use of pyridoxine
with amiodarone can increase the risk of drug-induced sensitivity
to sunlight, and pyridoxine can decrease the effects of phenytoin
and phenobarbital.
Pantothenic acid (Vitamin B5) is the
precursor to coenzyme A that is vital for the metabolism of carbohydrates,
the synthesis and degradation of fats, the synthesis of sterols
and the resultant steroid hormones, and the synthesis of many other
important compounds. A deficiency has not been seen in humans on
a normal diet because it is so widely distributed in foods, however
it is often included in multivitamin preparations.
There is insufficient information to establish RDAs for pantothenic
acid. The Committee on Dietary Allowances provides provisional recommendations
for adults of 4 to 7 mg. per day.
Folic acid (Vitamin B9) plays a major
role in cellular metabolism including the synthesis of some of the
components of DNA. It is necessary for normal red blood cell formation
and adequate intake can reduce damage to DNA.
Folic acid deficiency is a common complication of diseases of the
small intestine that interfere with the absorption of folic acid
from food and the recycling of folic acid from the liver back to
the intestines. Alcoholism can result in folic acid deficiency.
Folic acid activity can also be reduced by several drugs including
large doses of nonsteroidal anti-inflammatory drugs (NSAIDs), methotrexate,
trimethoprim, cholestyramine, isoniazid, and triamterene. The simultaneous
ingestion of folic acid supplements may, in theory, interfere with
the effectiveness of methotrexate cancer treatments, however their
combined use in the treatment of rheumatoid arthritis and psoriasis
has resulted in lessened side effects from methotrexate.
Although the anemia that results from folic acid deficiency is not
distinguishable than that resulting from B12 deficiency,
folic acid deficiency is rarely associated with neurological abnormalities
(see Vitamin B12). Excessive doses of folic acid may
mask the anemia that results from B12 deficiency, preventing
diagnosis of the deficiency and allowing progression of neurological
damage.
Adequate folic acid intake is associated with a reduced risk of
neural tube birth defects. It is recommended that all women of childbearing
age consume at least 400 micrograms of folic acid each day. Folic
acid supplements are also used to lower elevated homocysteine levels,
a known risk factor for heart disease. Recent studies have suggested
that folic acid supplements may be effective in lowering the risk
of colon cancer. Topical folic acid formulations are used for gingival
hyperplasia that result from phenytoin therapy and for gingivitis
associated with pregnancy.
The RDA for folic acid for adults over 13 years, 400 micrograms;
for pregnant women, 600 micrograms; and lactating women, 500 micrograms.
Vitamin B12 (Cyanocobalamin) is important
for the proper functioning of many enzymes involved in carbohydrate,
fat and protein metabolism, synthesis of the insulating sheath around
nerve cells, cell reproduction, normal growth and red blood cell
formation. It is essential for proper folic acid utilization. A
deficiency results in anemia, gastrointestinal lesions and nerve
damage. Many drugs can interfere with the absorption of vitamin
B12 including drugs commonly used to treat ulcers (such
as cimetidine, omeprazole), and drugs used to treat seizures (such
as phenytoin and phenobarbital).
A protein called intrinsic factor is secreted by the stomach and
is required for vitamin B12 absorption from the lower
part of the small intestine. Signs of B12 deficiency
often occur in the presence of adequate B12 intake, but
result from impaired absorption. Conditions that are associated
with this include some gastric surgeries, pancreatic disorders,
bacterial overgrowth or intestinal parasites, and damage to the
intestinal cells.
The RDA for vitamin B12 for adults is 2.4 micrograms;
for pregnant women, 2.6 micrograms; and for lactating women, 2.8
micrograms. Approximately 10 to 30% of people over 50 years of age
have difficulty absorbing food-bound vitamin B12, so
they should eat foods fortified with the vitamin or take a supplement.
Vitamin B12 and folic acid have a close relationship.
A deficiency in either one results in abnormal synthesis of DNA
in any cell in which cell division is taking place. Tissues such
as the blood forming system are most severely affected, therefore
an early sign of deficiency of either vitamin is a type of anemia
termed megaloblastic anemia.
Choline
is traditionally not a vitamin, however it was identified as part
of the vitamin B complex and has several important functions. Choline
is a component of many biological membranes and fat transport molecules
in the blood. It is able to stimulate the removal of excess fat
from the liver. Choline serves as the precursor to many substances
including a the transmitter of the parasympathetic nervous system,
acetylcholine. Some athletes use choline to delay muscle fatigue
because acetylcholine is involved in muscle contraction, but this
effect has not been proven. A deficiency is uncommon except among
people receiving long-term IV nutrition. It is added to infant formulas
to approximate the amount found in human milk.
The Daily Reference Intake (DRI) is 550 mg for adult males and lactating
females; 425 mg for adult females; and 450 mg for pregnant females.
Oral choline supplements have not been proven to be effective in
treating memory loss, Alzheimers disease, dementia and schizophrenia.
Inositol is an important part
of cell membranes and is part of a signaling mechanism that transmits
information from the outside to the inside of cells. Some evidence
suggests it participates in the movement of fat out of the liver
and intestinal cells, and that it may reverse desensitization of
serotonin receptors, however this remains to be confirmed. Although
it may be effective in treating panic disorders, depression and
obsessive-compulsive disorders, these uses remain to be verified.
A dietary need for inositol has not been established, probably due
to its production by gut bacteria, the existence of tissue stores
following absorption from food, and possible synthesis in some organs.
It may be added to infant formulas to approximate the content of
human milk.
Biotin has an important role
in carbohydrate and fat metabolism. It can be synthesized by gut
bacteria and recycled. A deficiency rarely occurs in humans. If
raw egg whites are consumed in large quantities, a biotin deficiency
can occur. Signs of a deficiency include dermatitis, muscle pain,
loss of appetite, slight anemia, an inflamed tongue, and weakness.
There is no RDA for biotin.
Vitamin C (Ascorbic Acid) has
many important functions in the body. It is a powerful antioxidant,
protecting against oxidative damage to DNA, membrane lipids and
proteins. It is involved in the synthesis of numerous substances
such as collagen, certain hormones and transmitters of the nervous
system, lipids and proteins. It is necessary for proper immune function,
a fact that has led many to use vitamin C to prevent or treat colds,
although this has not been supported by current studies. It may,
however, shorten or reduce the severity of a cold.
Vitamin C deficiency causes scurvy that is characterized by capillary
fragility resulting in bruising and hemorrhaging, inflammation of
the gums, loosening of the teeth, anemia and general debility that
can lead to death. The RDA for adults 15 years and older is 60 mg;
for pregnant women, 70 mg; and for lactating women in the first
six months, 95 mg decreasing to 90 mg for the second six months.
There may be increased vitamin C requirements for people taking
estrogens, oral contraceptives, barbiturates, tetracyclines, aspirin
and for cigarette smokers. Large doses of vitamin C can interfere
with many laboratory tests. Side effects from large doses include
nausea, vomiting, heartburn, abdominal cramps, headache and diarrhea.
Diets containing 200mg or more of vitamin C from fruits and vegetables
are associated with a lower cancer risk, particularly for cancers
of the colon, lung, mouth, esophagus and stomach. The consumption
of dietary supplements have not been shown to have the same effect.
It may block the formation of N-nitrosamines, cancer-causing agents
from certain foods. Ascorbic acid alone does not appear to prevent
heart disease, however the combined use with vitamin E may reduce
the risk of heart disease.
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5.
Minerals
Minerals
are the basic building blocks of all things, both living and non-living.
Their functions in our bodies are critical and are essential for good
health.
The
body utilizes over 80 minerals for maximum function. Because our plants
and soils are so nutrient depleted, even if we eat the healthiest
foods, we are not getting all the minerals we need. Evidence of
mineral malnutrition are various minor and serious health conditions
such as energy loss, premature aging, diminished senses, and degenerative
diseases like osteoporosis, heart disease, and cancer.
In
many cases, these could be prevented with proper mineral supplementation.
The
more you learn about the benefits of minerals, the more you will be
able to take charge of your own health!
Every
living cell depends on minerals for proper structure and function.
Minerals are needed for the formation of blood and bones, the proper
composition of body fluids, healthy nerve function, proper operation
of the cardiovascular system, among others. Like vitamins, minerals
function as co-enzymes, enabling the body to perform its functions
including energy production, growth and healing. Because all enzyme
activities involve minerals, they are essential for the proper utilization
of vitamins and other nutrients. Nutritionally, minerals are grouped
into two categories: bulk or essential minerals, also called macro-minerals,
and trace minerals or micro-minerals. Macro-minerals such as calcium
and magnesium are needed by the body in larger amounts. Although only
minute quantities of trace minerals are needed, they are nevertheless
important for good health. Micro-minerals include boron, chromium,
iron, zinc, and many others.
Three
basic classifications of minerals exist. They are "metallic minerals,"
"chelated minerals," and "colloidal minerals."
Metallic
minerals are found in their pure elemental form or
as salts such as sodium chloride and zinc sulfate. They are the
most commonly used form in nutritional supplements, especially
for the essential minerals, because larger amounts are indicated.
They are generally the least expensive form of minerals but their
primary disadvantage is that their degree of absorption is
the least of all three forms. Although they have their place,
metallic minerals do not represent the full spectrum of all the
trace minerals that are known to be of value in human nutrition.
Chelated
minerals are the next step up the ladder in so far as
the body's ability to assimilate. The term "chelate" originates
from a Greek word that means "claw." In this process, be it either
in the laboratory or in nature itself, a metallic mineral is "chelated"
with an amino acid. The amino acid actually surrounds the metallic
mineral like a claw and thereby helps to solubilize it, making the
"mineral chelate" more bio-available or useful to the body. Examples
of chelated minerals are the magnesium aspartate (magnesium chelated
with the natural aspartic acid) and chromium picolinate (chromium
chelated with picolinic acid). In many cases, chelated minerals
are about 40% more efficient in regards to absorption and assimilation
into the body than metallic minerals.
Colloidal
minerals are those that occur in nature in the colloid
state. That is, they are minute particles that either are or can
be easily dispersed in a medium such as water. In that they are
made up of such small particles, there is a major increase in
surface area giving them greater exposure to the liquid or solvent
they are to be distributed in. This results in increased solubility,
bio-availability, absorption, and usefulness to the body. Plant-derived
colloidal minerals provide the best of all forms of minerals
not only because of this increased solubility but also because
they are associated with natural plant tissue. This gives them
all the advantages of chelated and metallic minerals and more!
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6.
Roughage (Dietary Fiber)
Roughage
helps food to be processed, so that it can pass easily through the
digestive system. Also referred to as dietary fiber, roughage is that
portion of plant-related foods (such as fruits, legumes, vegetables
and whole grains) that cannot be completely digested. Besides the
accepted benefits of fiber in reducing cancer and serious health concerns,
studies have shown that fiber markedly decreases mycotoxicity. Fiber
acts like a sponge, soaking up acids from the body. It also works
like a broom, cleaning out the intestines.
What
is the difference between insoluble and soluble fiber?
Soluble
fiber forms a gel when mixed with liquid, while insoluble fiber
does not. Insoluble fiber passes through your digestive tract largely
intact. Both types of fiber are important in the diet and provide
benefits to the digestive system by helping to maintain regularity.
Soluble fiber has some additional benefits to heart health.
What
are some good sources of soluble fiber?
Soluble
fiber is found in oats, peas, beans, certain fruits, and psyllium
(pronounced sil'e-um). Psyllium is a grain that is found in some
cereal products, in certain dietary supplements, and in certain
bulk fiber laxatives. Read labels carefully to check for the addition
of psyllium.
What
are the benefits of soluble fiber?
In
additional to the digestive system benefits mentioned above, soluble
fiber has been scientifically proven to reduce blood cholesterol
levels, which may help reduce your risk of heart disease. In fact,
the Food and Drug Administration recently authorized food companies
to use a health claim for soluble fiber from both psyllium and oats.
For example, the new claim for psyllium states, "Soluble fiber from
foods with psyllium husk, as part of a diet low in saturated fat
and cholesterol, may reduce the risk of heart disease."
Overall,
how much fiber should I eat and how much soluble fiber do I need?
Americans
should eat 20-35 grams of fiber each day, including both soluble
and insoluble fiber. The average American currently eats 12-17 grams
of fiber a day. Only about 1/4
of this is soluble fiber; therefore, the average American is eating
only 3-4 grams of soluble fiber--below the recommended amount of
5-10 grams. Eating 3 grams a day of soluble fiber from oats or 7
grams a day of soluble fiber from psyllium has been shown to lower
blood cholesterol levels.
Elevated
levels of blood cholesterol may increase your risk of heart disease.
Your doctor is familiar with your family history and other possible
risk factors, can assess your overall health, and help you set goals
to reduce your risk, including reducing cholesterol.
| Food |
Portion |
Fiber |
Soluble |
Insoluble |
| Fruits |
|
| Apple |
1
Medium |
2.9 |
0.9 |
2.0 |
| Orange |
1
Medium |
2.0 |
1.3 |
0.7 |
| Banana |
1
Medium |
2.0 |
0.6 |
1.4 |
| |
| Vegetables |
|
| Broccoli |
1
stalk |
2.7 |
1.3 |
1.4 |
| Carrots |
1
large |
2.9 |
1.3 |
1.6 |
| Tomato |
1
small |
0.8 |
0.1 |
0.7 |
| Potato |
1
medium |
1.8 |
1.0 |
0.8 |
| Corn |
2/3
cup |
1.6 |
0.2 |
1.4 |
| |
| Grains |
|
| All-Bran |
1/2
cup |
9.0 |
1.4 |
7.6 |
| Oat
Bran |
1/2
cup |
4.4 |
2.2 |
2.2 |
| Cornflakes |
1
cup |
0.5 |
0 |
0.5 |
| Rolled
Oats |
3/4
cup cooked |
3.0 |
1.3 |
1.7 |
Whole-wheat
Bread |
1
slice |
1.4 |
0.3 |
1.1 |
| White
Bread |
1
slice |
0.4 |
0.3 |
0.1 |
| Macaroni |
1
cup cooked |
0.8 |
0.5 |
0.3 |
| |
| Legumes |
|
| Green
Peas |
2/3
cup cooked |
3.9 |
0.6 |
3.3 |
| Kidney
Beans |
1/2
cup cooked |
6.5 |
1.6 |
4.9 |
| Pinto
Beans |
1/2
cup cooked |
5.9 |
1.2 |
4.7 |
| Lentils |
2/3
cup cooked |
4.5 |
0.6 |
3.9 |
7. Fluid
Your
body is approximately 70 percent water, and water is the environment
within which all of your other nutrients function. Dehydration, or
the loss of body water, can disturb cardiovascular function, cell
metabolism, and temperature regulation. In general, dehydration leading
to body weight losses of only 2 percent may lead to decreases in aerobic
endurance capacity.
The
body must continuously be in a proper state of hydration. Because
2.5 liters of water is lost each day through normal bodily functions,
this must be replaced. There are two major issues that emphasize the
need to keep the body adequately hydrated with water of the best quality,
content, and structure so it can maintain homeostasis. First, the
water we put in our body must be able to prevent toxins and chemical
substances from accumulating and creating destructive influences on
cells. Water must bring all minerals and nutrients required for cell
metabolism, and remove any substances that can damage the cell. It
must also be able to protect cell walls from damage and invasion.
Second, since water is involved in every function of the body, it
must act as a conductor of electrochemical activity, such as neurotransmission,
by moving water from one nerve cell to another smoothly and effectively.
Water
vs. Coke |
|
Water
-
75%
of Americans are chronically dehydrated. (Likely applies
to half world population)
-
In
37% of Americans, the thirst mechanism is so weak that
it is often mistaken for hunger.
-
Even
MILD dehydration will slow down one's metabolism as
much as 3%.
-
One
glass of water will shut down midnight hunger pangs
for almost
100% of the dieters studied in a U-Washington study.
-
Lack
of water, the #1 trigger of daytime fatigue.
-
Preliminary
research indicates that 8-10 glasses of water a day
could significantly ease back and joint pain for up
to 80% of sufferers.
-
A
mere 2% drop in body water can trigger fuzzy short-term
memory, trouble with basic math, and difficulty focusing
on the computer screen or on a printed page.
-
Drinking
5 glasses of water daily decreases the risk of colon
cancer by 45%, plus it can slash the risk of breast
cancer by 79%, and one is 50% less likely to develop
baldder cancer
Are
you drinking the amount of water you should every day?
COKE
- In
many states (in the USA) the highway patrol carries
two gallons of Coke in the truck to remove blood from
the highway after a car accident.
- You
can put a T-bone steak in a bowl of coke and it will
be gone in two days.
- To
clean a toilet: Pour a can of Coca-Cola into the toilet
bowl and let the "real thing" sit for one hour, then
flush clean. The citric acid in Coke removes stains
from vitreous china.
- To
remove rust spots from chrome car bumpers: Rub the bumper
with a rumpled-up piece of Reynolds Wrap aluminum foil
dipped in Coca-Cola.
- To
clean corrosion from car battery terminals: Pour a can
of Coca-Cola over the terminals to bubble away the corrosion.
- To
loosen a rusted bolt: Applying a cloth soaked in Coca-Cola
to the rusted bolt for several minutes.
- To
bake a moist ham: Empty a can of Coca-Cola into the
baking pan, wrap the ham in aluminum foil, and bake.
Thirty minutes before the ham is finished, remove the
foil, allowing the drippings to mix with the Coke for
asumptuous brown gravy.
- To
remove grease from clothes: Empty a can of coke into
a load of greasy clothes, add detergent, and run through
a regular cycle. The Coca-Cola will help loosen grease
stains. It will also clean road haze from your windshield.
For Your Info
-
The
active ingredient in Coke is phosphoric acid. Its pH
is 2.8. It will dissolve a nail in about 4 days. Phosphoric
acid also leaches calcium from bones and is a major
contributor to the rising increase in osteoporosis.
-
To
carry Coca-Cola syrup (the concentrate) the commercial
truck must use the Hazardous material place cards reserved
for Highly corrosive materials.
-
The
distributors of coke have been using it to clean the
engines of their trucks for about 20 years! Now the
question is, would you like a glass of water or coke?
|
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RDA
- Recommended Dietary Allowance Of Nutritional Elements
RDA,
or known by its full name, the Recommended Daily Allowance, is busy being
revised and will be called the Dietary Reference Intake (DRI) and is a
collaborative effort between the USA and Canada.
Until
publication of the new DRI, we herewith refer to the old RDA schedule,
with some of the new DRI worked in, as a point of reference only.
Ratings
For:
The RDA represents the establishment of a nutritional
norm for planning and assessing dietary intake, and are the levels of
intake of essential nutrients considered to be adequate to meet the known
needs of practically all healthy people.
These figures were first published in 1943 and have
been updated and expanded as data became available.
When introducing the new revision of the RDA in 1974,
Dr. Alfred E. Harper, the then Chairman of the Committee on Dietary Allowances,
Food and Nutrition Board said "...However requirements differ with age
and body size; among individuals of the same body size owning to differences
in genetic makeup; with the physiologic state of individuals - growth
rate, pregnancy, lactation; and with sex. .."
With this in mind, herewith the tables as they stand
at the moment:
|
|
Age |
Energy |
Protein |
Vitamin A |
Vitamin D |
Vitamin E |
Vitamin
K |
| |
k.
cal |
g |
IU |
*ug
RE |
IU |
*ug |
IU |
*mg
TE |
*ug |
| Children |
4-6 |
1,800 |
30/24 |
2,500 |
500 |
400 |
5 |
9 |
7 |
-/20 |
7-10 |
2,400/
2,000
|
36/28 |
3,300 |
500 |
400 |
5 |
10 |
7 |
-/30 |
| Males |
15-18 |
3,000 |
54/59 |
5,000 |
1,000 |
400 |
5 |
15 |
10 |
-/65 |
19-24 |
3,000/
2,900 |
54/58 |
5,000 |
1,000 |
400 |
5 |
15 |
10 |
-/70 |
25-50 |
2,700 |
56/63 |
5,000 |
1,000 |
- |
5 |
15 |
10 |
-/80 |
50+ |
2,400 |
56/63 |
5,000 |
1,000 |
- |
10 |
15 |
10 |
-/80 |
| Females |
15-18 |
2,100 |
48/44 |
4,000 |
800 |
400 |
5 |
12 |
8 | |