Whenever one hears the word “anemia”,
one usually thinks of things like dizziness, fainting spells and pale faces. However
not all people know what anemia really means and what happens to people who
have this condition. So, what really is anemia?
According to the definition, anemia
is a condition in which your blood has a lower than normal number of red blood
cells. Anemia also can occur if your red blood cells don't contain enough
hemoglobin. Hemoglobin is an iron-rich protein that gives blood its red color.
This protein helps red blood cells carry oxygen from the lungs to the rest of
the body. If you have anemia, your body doesn't get enough oxygen-rich blood.
As a result, you may feel tired and have other symptoms. Severe or long-lasting
anemia can damage the heart, brain, and other organs of the body. Very severe
anemia may even cause death.
Anemia has three main causes:
blood loss, lack of red blood cell production, or high rates of red blood cell
destruction. These causes may be due to many diseases, conditions, or other
factors. Many types of anemia can be mild, short term, and easily treated. You
can even prevent some types with a healthy diet. Other types can be treated
with dietary supplements. However, certain types of anemia may be severe, long
lasting, and life threatening if not diagnosed and treated.
There are many types of anemia
with specific causes and traits. Some of these types are aplastic anemia, blood
loss anemia, Cooley's anemia, Diamond-Blackfan anemia, Fanconi anemia, folate- or
folic acid-deficiency anemia, hemolytic anemia, iron-deficiency anemia, pernicious
anemia, sickle cell anemia and thalassemias. The three main causes of anemia
are blood loss, lack of red blood cell production and high rates of red blood
cell destruction.
Blood loss is the most common cause of anemia, especially
iron-deficiency anemia. Blood loss can be short term or persist over time. Heavy
menstrual periods or bleeding in the digestive or urinary tract can cause blood
loss. Surgery, trauma, or cancer also can cause blood loss.
Both acquired and inherited conditions and factors can
prevent your body from making enough red blood cells. "Acquired"
means you aren't born with the condition, but you develop it.
"Inherited" means your parents passed the gene for the condition on
to you. Examples of acquired conditions and factors that can prevent your body
from making enough red blood cells include diet, hormones, some chronic
(ongoing) diseases, and pregnancy. Aplastic anemia also can prevent your body
from making enough red blood cells. This condition can be acquired or
inherited.
A diet that lacks iron, folic acid (folate), or vitamin B12
can prevent your body from making enough red blood cells. Your body also needs
small amounts of vitamin C, riboflavin, and copper to make red blood cells. Conditions
that make it hard for your body to absorb nutrients also can prevent your body
from making enough red blood cells.
Your body needs the hormone
erythropoietin to make red blood cells. This hormone stimulates the bone marrow
to make these cells. A low level of this hormone can lead to anemia.
Chronic diseases, like kidney
disease and cancer, can make it hard for your body to make enough red blood
cells. Some cancer treatments may damage the bone marrow or damage the red
blood cells' ability to carry oxygen. If the bone marrow is damaged, it can't
make red blood cells fast enough to replace the ones that died or were
destroyed. People who have HIV/AIDS may develop anemia due to infections or
medicines used to treat their diseases.
Anemia can occur during pregnancy
due to low levels of iron and folic acid and changes in the blood. During the
first 6 months of pregnancy, the fluid portion of a woman's blood (the plasma)
increases faster than the number of red blood cells. This dilutes the blood and
can lead to anemia.
Some infants are born without the
ability to make enough red blood cells. This condition is called aplastic
anemia. Infants and children who have aplastic anemia often need blood
transfusions to increase the number of red blood cells in their blood.
Acquired conditions or factors,
such as certain medicines, toxins, and infectious diseases, also can cause
aplastic anemia. Both acquired and inherited conditions and factors can cause
your body to destroy too many red blood cells. Hemolytic anemia is another
example of a condition in which your body destroys too many red blood cells.
Inherited conditions can cause this type of anemia. Acquired conditions or
factors also can cause hemolytic anemia. Examples include immune disorders, infections,
certain medicines, or reactions to blood transfusions.
Factors that raise your risk of
anemia include a diet that is low in iron, vitamins, or minerals, blood loss
from surgery or an injury, long-term or serious illnesses, long-term infection
and a family history of inherited anemia, such as sickle cell anemia or
thalassemia.
So how do you know if you have
anemia? The most common symptom of
anemia is fatigue. If you have anemia, it may seem hard to find the energy to
do normal activities. Other signs and symptoms of anemia include shortness of
breath, dizziness, headache, coldness in the hands and feet, pale skin and chest
pain. These signs and symptoms can occur because your heart has to work harder
to pump oxygen-rich blood through your body. Mild to moderate anemia may cause
very mild symptoms or none at all.
Often, the first test used to
diagnose anemia is a complete blood count (CBC). The CBC measures many parts of
your blood. The test checks your hemoglobin and hematocrit levels. Hemoglobin
is the iron-rich protein in red blood cells that carries oxygen to the body.
Hematocrit is a measure of how much space red blood cells take up in your
blood. A low level of hemoglobin or hematocrit is a sign of anemia. The CBC
also checks the number of red blood cells, white blood cells, and platelets in
your blood. Abnormal results may be a sign of anemia, another blood disorder,
an infection, or another condition.
Finally, the CBC looks at mean
corpuscular volume (MCV). MCV is a measure of the average size of your red
blood cells and a clue as to the cause of your anemia. In iron-deficiency
anemia, for example, red blood cells usually are smaller than normal.
If the CBC results show that you
have anemia, you may need other tests, such as hemoglobin electrophoresis. This
test looks at the different types of hemoglobin in your blood. It can help
diagnose the type of anemia you have. A reticulocyte count measures the number
of young red blood cells in your blood. The test shows whether your bone marrow
is making red blood cells at the correct rate. Also tests for the level of iron
in your blood and body may be requested, which include serum iron and serum
ferritin tests. Transferrin level and total iron-binding capacity tests also
measure iron levels.
Because anemia has many causes,
you also may be tested for conditions such as kidney failure, lead poisoning
(in children), and vitamin deficiencies (lack of vitamins, such as B12 and
folic acid).
If your doctor thinks that you
have anemia due to internal bleeding, he or she may suggest several tests to
look for the source of the bleeding. A test to check the stool for blood may be
done in your doctor's office or at home. Your doctor can give you a kit to help
you get a sample at home. He or she will tell you to bring the sample back to
the office or send it to a laboratory.
If blood is found in the stool,
other tests may be used to find the source of the bleeding. One such test is
endoscopy. For this test, a tube with a tiny camera is used to view the lining
of the digestive tract. Your doctor also may want to do bone marrow tests.
These tests show whether your bone marrow is healthy and making enough blood
cells.
Treatment for anemia depends on
the type, cause, and severity of the condition. Treatments may include dietary
changes or supplements, medicines, or procedures. The goal of treatment is to
increase the amount of oxygen that your blood can carry. This is done by
raising the red blood cell count and/or hemoglobin level. Another goal is to
treat the underlying condition or cause of the anemia.
To raise your vitamin or iron
level, your doctor may ask you to change your diet or take vitamin or iron
supplements. Common vitamin supplements are vitamin B12 and folic acid
(folate). Vitamin C sometimes is given to help the body absorb iron.
Your body can more easily absorb
iron from meats than from vegetables or other foods. To treat your anemia, your
doctor may suggest eating more meat—especially red meat (such as beef or
liver), as well as chicken, turkey, pork, fish, and shellfish.
Nonmeat foods that are good
sources of iron include spinach and other dark green leafy vegetables, tofu,
peas, lentils, beans, soybeans, chickpeas, Dried fruits (prunes, raisins, and
apricots), prune juice and iron-fortified cereals and breads.
Iron also is available as a supplement. It's usually
combined with multivitamins and other minerals that help your body absorb iron.
Doctors may recommend iron
supplements for premature infants and infants who are fed breast milk only or
formula that isn't fortified with iron.
Low levels of vitamin B12 can
lead to pernicious anemia. This type of anemia often is treated with vitamin
B12 supplements. Good food sources of vitamin B12 include breakfast cereals
with added vitamin B12, meats (beef, liver, poultry, and fish), eggs and dairy
products (such as milk, yogurt, and cheese) and foods fortified with vitamin
B12, such as soy-based beverages and vegetarian burgers.
Folic acid (folate) is a form of
vitamin B that's found in foods. Your body needs folic acid to make and
maintain new cells. Folic acid also is very important for pregnant women. It
helps them avoid anemia and promotes healthy growth of the fetus. Good sources
of folic acid include bread, pasta, rice with added folic acid, spinach and other
dark green leafy vegetables, black-eyed peas and dried beans, beef liver, eggs,
bananas, oranges, orange juice, and some other fruits and juices.
Vitamin C helps the body absorb
iron. Good sources of vitamin C are vegetables and fruits, especially citrus
fruits. Citrus fruits include oranges, grapefruits, tangerines, and similar
fruits. Fresh and frozen fruits, vegetables, and juices usually have more
vitamin C than canned ones. Other fruits rich in vitamin C include kiwi fruit,
strawberries, and cantaloupes. Vegetables rich in vitamin C include broccoli,
peppers, Brussels sprouts, tomatoes, cabbage, potatoes, and leafy green
vegetables like turnip greens and spinach.
If your anemia is severe, you may
need a medical procedure to treat it. Procedures include blood transfusions and
blood and marrow stem cell transplants.
TO ALL READERS:
I am also moderating the Natural
Health Forum. The Natural Health Forum is a discussion forum for those seeking
health and longevity through natural foods, supplements and lifestyle. To post
and participate in our discussions, please join our community, the registration
is free and quick.
Check out Therapies4all at iPhone
apps too!