Don’t Ignore These 8 Warning Signs Of Vitamin B12 Deficiency

Mineral deficiencies are more common than vitamin deficiencies, statistics shows that one in four adults deals with lack of vitamin B12.

This articles focuses on the causes of vitamin B12,  the major symptoms as well as a few tips on how to fix this deficiency in an all-natural way.

Given that it boosts energy in the afternoon and gives an energy boost while doing cardio exercises, vitamin B12 is often referred to as the ‘energy’ vitamin.

Besides, it is viewed as an effective weight loss tool and has become all the rage at medical weight loss clinic.  Its popularity goes to the extent of clinics and health spas offering discounts for vitamin B12 injections.

Although this vitamin doesn’t provide real energy boost on its own, it helps a lot in case you are diagnosed with condition like megaloblastic anemia, which makes you weak and fatigued.  The reason for this is the importance of vitamin B12 in the formation of red blood cells which carry oxygen to all cells in the body.

Vitamin B12 is of utmost importance as it takes vital role in many bodily functions. Among them are:

  • Proper digestion
  • Iron absorption
  • Metabolism of fat and carbs
  • Nerve growth and formation
  • Healthy reproductive system in women
  • Secretion of adrenal hormone
  • Circulation
  • Formation of red blood cells
  • Healthy nervous system


Deficiency in vitamin B12 may be triggered by different factors, out of which the following are most common:

  • Antacids affect the assimilation of vitamin B12 since the body needs enough stomach acid to absorb it
  • Nitrous oxide, also known as the laughing gas, destroys vitamin B12 in the body
  • Drinking more than 4 cups of coffee a day leads to a 15 percent reduction in vitamin B12 levels
  • Gastric bypass weight loss surgery changes the digestive mechanisms, affecting the absorption of vitamin B12
  • The H. pylori bacteria destroys stomach cells that create the “intrinsic factor”, which are needed for absorption of vitamin B12


1. Optic Nerve Damage / Vision Problems

In case you notice any changes in your vision, such as double or blurry vision, test your vitamin B12 levels as deficiency in this vitamin often leads to vision problems.

2. Anxiety

Since vitamin B12 stimulates the production of dopamine and serotonin, known as the ‘happy’ brain chemicals, anxiety is often a warning sign of low vitamin B12 levels.

3. Changes in Taste

The bumps on the tongue are the ones responsible for recognizing the taste of the food you eat.  In case you notice changes in your taste and often get a ‘blah’ impression of the food, it is very likely that you are deficient in vitamin B12.

4. Yellow Skin

When the body lacks vitamin B12, it loses its ability to produce strong cells.  The degradation of red blood cells causes yellow skin and is a sure sign of vitamin B12 deficiency.

5. Memory Loss

Memory loss is often caused by vitamin B12 deficiency, especially in younger individuals who are young to develop dementia.

6. Inability to Keep Your Eyes Open

This is result of lack of oxygen in the blood, which is directly caused by the vitamin deficiency itself.

7. Dizziness

Feeling dizzy is yet another sign of lack of oxygen in the blood.

8. Numbness

Feeling numb and tingly is a result of nerve damage, which occurs due to vitamin B12 deficiency.


  • Vegans and vegetarians who don’t eat products of animal origin
  • Diabetics on Metformin, as this drug affects the absorption of vitamin B12
  • People aged 60 and over who do not have enough stomach acid
  • People diagnosed with autoimmune disorders, such as celiac or Crohn’s disease


The best way to obtain vitamin B12 is from animal sources and fortified foods.  The ones below are some of the best dietary sources of vitamin B12:

Meat: turkey, lamb, pork, beef, chicken, goat

Dairy: yoghurt,  cottage cheese , cow’s milk, hard and soft cheese, cream cheese

Eggs:  especially the yolk

Seafood: scallops, sardines, shrimp, salmon, tuna, cod

Vegan sources:  nutritional yeast, fortified coconut milk, or tempeh

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