Title : Vitamin B12 injections:. Good or bad
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Vitamin B12 injections:. Good or bad
People often believe that they will act as a safety net and help to ensure adequate nutrient intake.
Supplemental vitamin B12 is particularly common, because deficiency is widespread.
In fact, many people regularly receive injections vitamin B12.
These are claimed to help with energy levels, brain function and weight loss, to name a few.
This article deals with vitamin B12 injections and if they are something you should consider.
What is vitamin B12 and what it does?
Vitamin B12 is a water soluble vitamin, also known as cobalamin.
plays a vital role in brain function and the production of red blood cells and DNA.
Chemically, vitamin B12 can exist in a number of different forms, but they all contain cobalt ore.
Vitamin can be stored in the liver for a long time, so it may take a couple of years to develop a deficiency ( 1 ).
Conclusion :. Vitamin B12 is a water soluble vitamin that plays an important role in brain function and the production of red blood cells
Many people are deficient
The recommended daily intake (RDI) for vitamin B12 is 6 micrograms per day.
deficiency is common, especially in people who follow a vegetarian or vegan diet.
Indeed, it is believed that up to 90% of people who follow these diets are deficient ( 2 3 ).
This is because vitamin B12 is only found naturally in foods of animal origin.
However, vegetarians and vegans are not the only ones who are poor. Even some meat eaters do not absorb well ( 4 5 ).
Unlike other vitamins, the absorption of vitamin B12 depends on a protein produced in the stomach, called intrinsic factor .
The intrinsic factor binds to vitamin B12, so it can be absorbed into the bloodstream. People who do not produce enough intrinsic factor can become deficient.
deficiency is particularly common in the elderly, because the ability to absorb vitamin B12 may decrease with age ( 6 7 8 9 10 11 ).
Others at risk of deficiency include those who have had intestinal surgery, including weight loss surgery. People with diseases affecting the intestine, such as Crohn's disease or celiac disease are also at risk ( 12 13 14 15 ).
Conclusion: Those at greatest risk of vitamin B12 deficiency are vegetarians and vegans, who receive little or no dietary B12. Deficiency can also be caused by malabsorption.
B12 injections are very effective
A deficiency of vitamin B12 untreated can lead to neurological problems or pernicious anemia , which occurs when the body not enough B12 to produce the amount of red blood cells you need ( 16 ).
B12 injections are the most common to prevent or treat a deficiency form. The injections are prescribed by a doctor and intramuscularly, or muscle.
The injections are usually given as hydroxocobalamin or cyanocobalamin. These are very effective in increasing blood levels of B12 and prevent / reverse deficiency.
Conclusion :. If you are deficient in vitamin B12, then injections are very effective in raising your blood levels
potential health benefits
Given the vital functions of vitamin B12 in your body, a deficiency can have serious health consequences.
Indeed, low blood levels of vitamin D have been linked to various health conditions.
brain function
Low levels of vitamin B12 have been linked to decreased brain function.
Two recent reviews have found that there may be a relationship between low blood levels and the development of dementia ( 17 18 ).
However, results have been mixed and treatment with vitamin B12 was not effective to improve brain function in people with normal brain function ( 19 20 , 21 ).
Depression
It has been suggested that there may be a relationship between low levels of vitamin B12 and depression.
However, a review found that treating depression with vitamin B12 did not reduce the severity of symptoms.
However, it was suggested that taking vitamin on a long term basis may help prevent a relapse into depression ( 22 ).
Currently, there is a lack of quality research in this area. higher quality studies are needed to determine whether there is a relationship between vitamin B12 and depression ( 23 ).
Osteoporosis
Osteoporosis is a disease in which loss results in bone mass in weaker bones and an increased risk of bone fractures.
Interestingly, low blood levels of vitamin B12 have been linked to reduced bone mass ( 24 ).
Therefore, it has been suggested that taking vitamin B12 may reduce your risk of osteoporosis. However, the results of the studies have been mixed ( 25 , 26 , 27 ).
age-related macular degeneration
related macular degeneration with age is a condition that causes gradually loses central vision, usually in both eyes.
In those 50 years or older, it is believed that adequate intake of vitamin B12 is important to maintain good vision and protection against macular degeneration.
In a large study, 5,200 women received 1,000 mcg of vitamin B12 per day, as well as other B vitamins and folic acid ( 28 ).
7 years later, the study found a 35% lower risk of macular degeneration related to age among women who took the supplements.
Although risk reduction can not be attributed to vitamin B12 alone, it does suggest that getting enough can be important.
Other Claims
Recently, injections and infusions of vitamin B12 have become popular among healthy people who do not seem to have a deficiency.
Proponents of this approach argue that regular injections can increase energy levels and help you lose weight and mood.
However, there is little or no evidence to support these claims.
Conclusion: Check that you have enough vitamin B12 is important for brain and mental function, bone and eye health. Injections are probably useless if you do not have a deficiency.
Safety and side effects
B12 injections are generally considered very safe. They have no major side effects.
However, in rare cases, some people may experience side effects caused by allergic reactions or sensitivity ( 29 30 ).
If you experience side effects, stop taking it and talk to your doctor.
Conclusion: B12 injections are very safe. In rare cases, injections can cause allergic reactions.
Other ways to get vitamin B12
Vitamin B12 is found in animal foods, and some fortified foods that have added B12.
Fortified foods vary from one country to another, but often include milk alternatives or breakfast cereals .
Good sources of vitamin B12 include:
- Liver: 1/3 cup (75 g) provides 881% of the RDA [
- Meat kidney: 1/3 cup (75 g) provides 311% of the RDA
- Trucha. 1/3 cup (75 g) provides 61% of the IDR
- canned salmon. 1/3 cup (75 g) provides 61% of the IDR
- ground beef. 1/3 cup (75 g) provides 40% of the IDR
- :. eggs. 2 large eggs provide 25% of the IDR
- Milk: 1 cup (250 ml) provides 20% of the IDR
- . chicken: 1/3 cup (75 g) provides 3% of the IDR
may be difficult for some people to meet their needs for vitamin B12.. This is particularly true for those who follow a vegetarian or vegan diet.
In these situations, it is usually recommended that you supplement your diet, either with a B12 injection or an oral supplement.
Fortunately, there is growing evidence that vitamin B12 supplements by mouth are as good as injections to raise blood levels in most people ( 31 , 32 , 33 34 ).
Vegetarians and vegans are advised to take at least 10 mcg per day, or at least 2,000 mcg once a week.
However, some doctors still prefer the use of injections.
Conclusion: Many animal foods are rich in vitamin B12. Oral supplements have also been shown to be effective in increasing blood levels.
Need Vitamin B12 Injections?
If you eat a well balanced diet that includes foods rich in vitamin B12, then it is unlikely that you will have to take extra B12.
For most people, dietary sources provide everything that is needed. However, people who are at risk of deficiency you may need to take supplements.
In these cases, oral supplements can be as effective as injections for many people.
If you are concerned whether your intake of vitamin B12 is adequate, talk to a doctor or dietitian about your options.
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