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This presents a serious problem for vegetarians and vegans alike as they avoid eating animal products where vitamin B12 is found.  Vitamin B12 is found almost predominately in animal foods such as kidney, meat, liver, shellfish, fish, milk, and eggs. The source of Vitamin B12 is bacteria found in nature. Bacteria is the only creature able to produce Vitamin B12. Bacteria produce Vitamin B12 in the colon of humans and animals.
However not much vitamin B12 is absorbed across the wall of the colon so therefore it is essential that humans get B12 from animal foods.  Eggs are not a good source of B12 for vegetarians as they contain substances that block absorption of B12. Milk is a good source of B12 for vegetarians. Most vegetarians and vegans are recommended to take routine vitamin b12 supplementation. Some people can go longer on a vegatarian diet than others before they develop b12 deficiency.

Vitamin B12 is one of the very most important nutrients we get from animal foods. Vitamin B12 is a compound that is red in color because of the presence of cobalt. Absorption of Vitamin B12 is a complex process which can be problematic for many. For it to be absorbed effectively, B12 attaches to a protein known as intrinsic factor which is secreted in the stomach. Vitamin B12 binds with intrinsic factor and travels through to the small intestines. Once in the bloodstream, B12 binds to transport proteins. Enzymes release B12 from the protein complex and convert it to two forms- methylcobalamin and adenosylcobalamin. Deficiency in the enzymes can stop this conversion. Because there are so many potential blocks in the absorption process many people develop Vitamin B12 deficiencies even though they get plenty of Vitamin B12 in their diet.

A vitamin b12 injection (cyanocobalamin) is a synthetic form of vitamin b12.  The primary reason for getting a b12 injection is to treat b12 deficiency.  For many years b12 injections have also been given for patients suffering from fatigue and low energy.  The most common dosage is a 1000 microgram (mcg) b12 injection once a week. There are no upper limit dosages to vitamin b12 and there are no reported side effects to b12 overdose.

B12 Shot Instructions

1. Read the directions first which is essential in preparing for b12 shots.
2. Wash your hands thoroughly before giving a b12 shot.
3. Choose a spot for the b12 shot in the muscular area of the body.
4. Gently nip up the skin and put the needle into your skin at a 45° angle.
5. After you inject the needle completely you can let go of the skin.
6. Inject the b12 by gently pushing down the plunger.
7. After you have given the b12 shot remove the needle and syringe.
8. Press an alcohol swab on the area where the b12 shot was given.

B12 shots are being talked about now all over the news.  Everyone has known about the benefits of b12 shots for years.  The b12 shot story started to heat up with the Roger Clemens case. Roger Clemens admitted to taking B12 shots. Athletes are not the only people who take b12 shots. All kinds of people have been getting b12 injections for years. Now celebrities are catching up too! Even Madonna is getting and giving out B12 shots.  B12 shots give a boost of energy that people can really feel.

More than 70% of people over the age of 50 are thought to suffer from some form of vitamin b12 deficiency.  When this occurs your body is being deprived of an essential vitamin.  B12 is needed in order for your body to make red blood cells.  Therefore when your body does not have enough vitamin b12 it can lead to anemia. Red blood cells are critical as they carry oxygen through the body.  A person with vitamin b12 deficiency may feel very lethargic, weak, and tired.  There are different methods for a person to receive vitamin b12 such as through vitamin b12 injections.

Vitamin B12 Deficiency

Vitamin B12 is the only vitamin that is not known to have toxic effects even when taken in large doses. Patients with anemia have been given 1,000 mcg monthly injections to treat vitamin B12 deficiency without any side effects. However, for healthy individuals, large doses of vitamin B12 are not recommended. Healthy adults get enough of this vitamin from a balanced diet. Healthy adults are recommended to take one multivitamin daily that contains vitamin B12. Those at risk for vitamin B12 deficiency include the elderly and vegetarians. The elderly are at risk for atrophic gastritis, and vegetarians often need supplementation because vitamin B12 is found only in foods from animal products. A strict vegetarian diet which prohibits consumption of animal products can result in vitamin B12 deficiency.

Additional Supplementation

Patients with anemia cannot absorb vitamin B12 from food or oral supplements. Therefore, vitamin B12 injections are usually required to correct anemia and to prevent irreversible neurological damage. Patients who have had surgical removal of the stomach lack intrinsic factor which is produced in the stomach, so they cannot absorb vitamin B12 from food or supplements. Patients with resection of the small bowel may not be able to absorb vitamin B12 from food and supplements. Patients with a condition of food allergy to gluten that leads to atrophy of the small bowel lining may also not be able to absorb vitamin B12 from food and supplements. Also, some medications affect the absorption of vitamin B12 in the body. For example, medication used to control blood glucose levels with type II diabetes, treatment used to lower blood cholesterol levels, and also some medications used to control unexplained diarrhea have been known to inhibit the absorption of vitamin B12 from food.

General Overview of Vitamin B12 Injections

Vitamin B12 comes as a solution that can be injected into a muscle or just under the skin. Vitamin B12 is often administered by injection to treat or prevent deficiencies from numerous causes. Vitamin B12 is often administered several times as a test. This is in order to see how well the body undergoes the absorption of vitamin B12. Since vitamin B-12 can be injected straight into the blood stream, it can be used effectively to supply the vitamin in patients who are unable to absorb it through the intestine. In most cases the initial treatment is one injection a day for the first 6 to 7 days. Then, depending upon the absorption rate and the symptoms of the body, the frequency and dosage is increased or reduced accordingly.

Vitamin B12 Injections And Weight Loss

Vitamin B12 has been found to help weight loss by stimulating the thyroid gland. Also, vitamin B12 might sometimes reduce water retention in the body. Therefore, vitamin B12 is often used in weight reducing programs. Many weight loss clinics are providing their clients with vitamin B12 supplementation to increase energy levels, support thyroid function, and to enhance the over-all well being of the entire body.

About Vitamin B12 Supplementation

The importance of vitamin B12 can not be ignored. Even though vitamin B12 is required in very small amounts by the body, it is responsible for performing some vital and essential functions. Vitamin B12 is easily available in a balanced daily diet. However, due to the complex process involved in absorption, there may be a deficiency of this vitamin. A deficiency of vitamin B12 may give rise to numerous health problems and serious diseases of which anemia is most common. Different methods of supplementation of vitamin B12 exist. Some prominent methods that are practiced include oral intake, intravenous methods, and through injections also known as vitamin B12 shots.

Vitamin B12 Shots

Vitamin B12 helps in catalyzing the myriad bodily processes. Vitamin B12 should be consumed in appropriate levels in order to meet the various requirements of the body. Many times vitamin B12 is found to be deficient due to inappropriate absorption within the gastrointestinal tract. There are many over-the-counter medications for external supplementation of vitamin B12. However, some of these do not contain enough of the vitamin to effectively reduce the symptoms of deficiency. For this reason vitamin B12 shots are administered. Generally, the shots are given every 1 to 2 days for a period of about 2 weeks in the initial stages. The frequency of the shots can be increased or decreased according to need.

Vitamin B12

Until recently, it has been difficult to test for vitamin B12 deficiency. An inability to properly absorb vitamin B-12 causes pernicious anemia and leads to fatigue and neurological problems. Physicians lacked a safe and simple way to test their patients for poor vitamin B12 absorption. In humans, only two enzymatic reactions are dependent on vitamin B12. In the first reaction, methylmalonic acid is converted to succinyl-CoA by using vitamin B12 as a cofactor. Vitamin B12 deficiency can lead to increased levels of serum methylmalonic acid. Homocysteine is converted to methionine by using vitamin B12 and folic acid as cofactors. A deficiency of vitamin B12 or folic acid may lead to increased homocysteine levels. An understanding of the vitamin B12 absorption cycle helps clarify the potential causes of deficiency. The acidic environment of the stomach helps to breakdown the vitamin B12 that is bound to food. The intrinsic factor that is released by parietal cells in the stomach binds to vitamin B12 in the duodenum.

New Test

Extensive research has resulted in a more accurate and safer test for vitamin B12 deficiency.The new test involves drinking a small amount of vitamin B12 labeled with radioactive carbon 14, and then extracting a drop of blood. The amount of carbon 14 labeled vitamin B12 in the blood sample is measured with an accelerator mass spectrometer that can count single atoms of carbon 14. The radiation dose involved is equivalent to that received on a cross-country flight.