Vitamin B12 Deficiency Makes You Weak and Tired

Vitamin B12 is one of the most important vitamins in our body.

It maintains our nerve cells healthy and helps in the production of the body’s genetic material. So, vitamin B12 deficiency can cause many health complications.

If you don’t have a proper amount of vitamin B12 in your body, you will experience the following symptoms: anemia, tingling in the hands, legs or feet, a swollen inflamed tongue, fatigue, yellowed skin, poor concentration, and memory problems.


Vitamin B12 helps the formation of erythrocytes. These cells carry oxygen from the lungs to tissues and organs in the body. Vitamin B12 deficiency leads to lower numbers of erythrocytes. Low numbers of erythrocytes are associated with anemia.

Tingling in the legs, hands, or feet

The nerves become damaged as a result of vitamin B12 deficiency so you experience a burning sensation in your hands or feet.


Low-blood oxygen levels cause low-energy levels which is the reason why you constantly feel tired.

Swollen and inflamed tongue 

People who are low in vitamin B12 deficiency experience a loss of taste sensation.

Recognizing the symptoms of vitamin B12 deficiency is very important.

Vitamin B12: Functions 

Protects your heart 

Heart disease is a very serious health condition. Vitamin B12 deficiency increases the risk of developing cardiovascular diseases. Vitamin B12 decreases homocysteine levels in your blood and high cysteine levels can lead to hardening of the arteries and blood clots.

Protects your nervous system

Proper levels of vitamin B12 deficiency reduce the risk of nerve damage and neurological disorders.

Protects your bones 

Scientific data show that people who have osteoporosis lack vitamin B12 and have elevated homocysteine levels.

Increases your energy 

Vitamin B12 promotes the production of energy in your cells. It is a water-soluble nutrient which is necessary for DNA synthesis and various metabolic processes.

Increase your vitamin B12 intake

Eggs, clams, beef, turkey, milk products, fish, and poultry are an excellent source of vitamin B12.

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