Vitamin B deficiency diseases list

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Vitamin B:

A class of water-soluble vitamins known as vitamin B are essential for many biological processes. Any of these vitamins that are deficient can cause certain health issues.

Vitamin B deficiency diseases list

Here is a Vitamin B deficiency diseases list:

1. Vitamin B1 (Thiamine) Deficiency:

a. Beriberi: Characterized by neurological and cardiovascular symptoms. There are two types of beriberi: wet beriberi (affects the cardiovascular system) and dry beriberi (affects the nervous system).

b. Wernicke-Korsakoff syndrome: A severe deficiency primarily seen in chronic alcoholics, leading to neurological problems, memory loss, and confusion.

2. Vitamin B2 (Riboflavin) Deficiency:

a. Ariboflavinosis: Causes inflammation of the mouth, throat, skin, and eyes, along with sensitivity to light.

3. Vitamin B3 (Niacin) Deficiency:

a. Pellagra: Characterized by the "3 Ds": diarrhea, dermatitis, and dementia.

4. Vitamin B5 (Pantothenic Acid) Deficiency:

a. Pantothenic acid deficiency is rare in humans and is not associated with any specific disease.

5. Vitamin B6 (Pyridoxine) Deficiency:

a. Pyridoxine deficiency can lead to skin disorders, neurological symptoms, anemia, and impaired immune function.

6. Vitamin B7 (Biotin) Deficiency:

a. Biotin deficiency is relatively rare but can cause skin rashes, hair loss, and neurological symptoms.

7. Vitamin B9 (Folate or Folic Acid) Deficiency:

a. Folate deficiency anemia: Insufficient red blood cell production due to the lack of folate.

8. Vitamin B12 (Cobalamin) Deficiency:

a. Pernicious anemia: A type of anemia caused by the inability to absorb vitamin B12 due to a lack of intrinsic factor, a protein needed for its absorption.

b. Neurological symptoms: Long-term vitamin B12 deficiency can also lead to neurological problems.


To ensure appropriate intake of all required vitamins, including the B-complex vitamins, one must maintain a balanced and diverse diet. Consult with a healthcare provider for an accurate diagnosis and treatment if you think you may have a vitamin deficiency or are exhibiting symptoms.

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