Most Common Symptoms of Vitamin B12 Deficiency

01/ APRIL  /2023

Burning sensation in hands and feet 

Burning sensation in hands and feet can also be a sign of vitamin B12 deficiency leading to nerve damage. If you feel a burning sensation and numbness in your hands and feet, then Vitamin B12 can be tested in this condition.

Yellow skin 

The pale appearance of the skin can also be a sign of Vitamin B12 deficiency in the body. A lack of vitamin B12 in the body leads to a decrease in red blood cells, which can cause a yellowing of the skin. 


Vitamin B12 is needed for the body's cells to function correctly; otherwise, you may feel tired and weak. In addition, a deficiency can reduce the production of normal red blood cells.

Digestion Problems 

Due to a deficiency of Vitamin B12 in the body, you may also have to face problems related to digestion suffering from issues like diarrhoea, nausea, constipation, vomiting and gas. 

Swelling or sores 

Vitamin B12 deficiency can also cause stomatitis, sores and swelling in the mouth. Therefore, don't ignore this condition if you feel pain and swelling in the mouth or tongue. 

Mouth or tongue pain 

Due to a deficiency of Vitamin B12 in the body, a problem like glossitis can also arise. In this condition, swelling, redness and pain can be felt in the tongue. 

Oxidative stress 

In addition, a decrease in vitamin B12 in the body can increase oxidative stress. This can make people feel stressed, anxious and depressed. 


Depression can also be a symptom of vitamin B12 deficiency. Therefore, when this vitamin is deficient, it can affect mental health.


Vitamin B12 deficiency can cause headaches in children and adults. Especially migraine pain can be disturbing.

Vitamin B12 Sources 

Sardines, tuna fish,  salmon, milk and  dairy products, eggs, fortified cereals.