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Vitamin B12 Injections-Do they work?

Vitamin B12 is water-soluble and naturally found in foods such as meat, fish and dairy products. It is also added to some foods and available as a dietary supplement. Vitamin B12 injections are primarily for those with Vitamin B12 deficiency or pernicious anemia. However, there may be other instances when it can be beneficial.

Per Harvard Health Publishing, the human body needs vitamin B12 to make red blood cells, nerves, DNA, and carry out other functions. The average adult should get 2.4 micrograms a day. Like most vitamins, B12 can’t be made by the body. Instead, it must be gotten from food or supplements.


Some Vitamin B12 deficiency signs and symptoms include:

depression

memory loss

numbness and "pins and needles" sensation

weakness

tiredness


Some patients may benefit from Vitamin B12 injections if they are placed on Metformin, Fortamet or Glucophage as these medications, which are used to treat type 2 diabetes, may cause a Vitamin B12 deficiency. In addition, proton pump inhibitors and H2 blockers may also be a prerequisite for deficiency.

Next, people who follow a vegan or strict vegetarian diet may become deficient in Vitamin B12; therefore, vitamin B12 injections will help them, as lack of Vitamin B12 can cause anemia, weakness and fatigue.

Lastly, gastrointestinal disorders such as Crohn's disease, Celiac Disease, or even gastric bypass surgery may cause inadequate absorption of Vitamin B12 leading to deficiency.

There is no scientific evidence that Vitamin B12 injections will aid in weight loss; however, for those who may be deficient in Vitamin B12 they can have an increase in energy with Vitamin B12 injections. This increase in energy will most likely result in increased activity that can aid in weight loss.

If you take vitamin B12 injections or oral supplement you should inform your primary care provider because it can affect other medications you may be on.


Sources: https://www.health.harvard.edu/blog/vitamin-b12-deficiency-can-be-sneaky-harmful-201301105780


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