Skip to content
Home » Vitamins » What Gives You Vitamin B12?

What Gives You Vitamin B12?

Vitamin B12

What do you need vitamin b12 for? And why its deficiency is one of the major health issues?

Vitamin B12 or cobalamin is one of the most important vitamins for our health. For example, it is essential for the normal function of our nerves, Red Blood Cells (RBCs) formation, and DNA integrity and synthesis. The problem is that our bodies cannot produce it. It is available only in animal sources. Nowadays, fortified foods and supplements can also provide you with your needs for this crucial element.

In this article, we will answer several questions about this crucial vitamin such as what should your vitamin b12 level be, what do you need vitamin b12 for, and what vitamin b12 does for the body.

What Do You Need Vitamin B12 For?

What Do You Need Vitamin B12 For?

Many people wonder for what is vitamin b12 good? Or what is vitamin b12 best for? Well, it has many health benefits since it participates in many bodily functions. The benefits include:

What Is Vitamin B12 Prescribed For?

What Is Vitamin B12 Prescribed For?

B12 deficiency is rare since the liver usually has major stores in most healthy adults. So, what is vitamin B12 prescribed for?

Vitamin B12 Deficiency Symptoms

If you have any signs or symptoms of B12 deficiency, your doctor may prescribe injections or supplements for you. Signs and symptoms include:

  • Fatigue
  • Weight loss
  • Memory loss
  • Mood swings
  • Appetite loss
  • Constipation

Vitamin B12 Deficiency Risk Factors

The following factors may increase the risk of the deficiency:

  • Alcoholism
  • Older age
  • Anemia
  • AIDS
  • GIT problems

Gastrointestinal Issues

GIT problems may contribute to B12 deficiency including:

  • Parasitic infections
  • Pancreatic cancer
  • Bowel cancer
  • Gastric atrophy
  • Folic acid deficiency
  • Crohn’s disease
  • Celiac disease
  • Weight loss surgeries

Older Adults

People over 60 have a higher risk of developing B12 deficiency. Therefore, they can benefit from B12 supplements, prescription medications, or injections.


Plant-based diet is associated with increasing the risk of B12 deficiency.

What Vitamin B12 Does for the Body?

What Vitamin B12 Does for the Body?

Why is this vitamin so important? what effect does vitamin b12 have on the body? When taken orally, it is absorbed in the small intestine and reaches the blood. In the blood, it binds with plasma proteins and then gets absorbed by the tissues to enter the cells.

Moreover, it works as a cofactor for many enzymes participating in DNA synthesis. It also participates in the formation of RBCs and energy production.

B12 deficiency can lead to neurological and gastrointestinal problems depending on the severity and duration of the condition. So, what will vitamin b12 do for me if I have B12 deficiency?  

If you have a deficiency, you should try to increase your intake. Once you have adequate levels in your body, the signs and symptoms of will disappear. In addition, supplements can be the treatment of choice for several conditions caused by its deficiency such as megaloblastic anemia, gastrointestinal manifestations, lack of energy, and neurological symptoms.

What Is Vitamin B12 Normal Range?

What Is the Normal Range?

Our bodies do not produce this vitamin. What gives you vitamin b12 is mainly animal sources such as meat, fish, milk, cheese, and eggs. Vegans do not get enough of this important vitamin since it does not exist in fruits, vegetables, and grains. However, many fortified foods are available nowadays and can help vegans maintain their normal levels of this crucial vitamin.

So, what is vitamin b12 normal range? The normal range is between 200 and 950 picograms per milliliter (pg/mL). Below 200 pg/mL is low. The results may differ from one lab to another, but if your blood levels are below 200 and you have any of the previous signs and symptoms, no further testing is required and you should start increasing your blood levels either by supplements or via foods.  

How Long Does It Take to Treat Vitamin B12 Deficiency?

How Long Does It Take to Treat the deficiency!

The duration of treatment of the deficiency varies from one person to another depending on the cause, and severity of the condition. In general, it takes between 6 months and 1 year to fully recover from this condition.

Of course, the type of treatment plays a role. For example, B12 injections work faster than tablets or capsules. In fact, if you have a mild B12 deficiency, you may need just 2 to 3 injections over several weeks to fully recover. Your doctor will determine the best and most effective approach to treat your deficiency condition. In some cases, all you need is to have a balanced, vitamin B12-rich diet.

The Bottom Line

Vitamin B12 is a crucial vitamin that our bodies cannot produce. Therefore, it should be obtained from foods or supplements. If you wonder “what will vitamin b12 do for me” or “what does b12 give you?”, we have explained how crucial this vitamin is for many bodily functions. Your overall health depends on having adequate B12 in your body.

If you are vegan or have a health condition affecting the proper absorption of this essential vitamin, supplements and injections can be the best option for you.

1 thought on “What Gives You Vitamin B12?”

  1. Pingback: The Benefits of Vitamin B12 | Vitamins and Supplements Your Body Needs | UsefulVitamins

Leave a Reply

Your email address will not be published. Required fields are marked *