Disease Caused by Deficiency of Vitamin B: Learn About the Significance in 2023

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Welcome to our Beginner’s Guide to Disease Caused by Deficiency of Vitamin B. Vitamins are essential nutrients that our bodies require for proper functioning, and the B vitamins play a crucial role in maintaining our overall health. However, deficiency in these vital nutrients can lead to a range of health issues. In this blog post, we’ll focus on vitamin B deficiencies, specifically vitamin B12 deficiency, and explore the consequences of inadequate intake of these nutrients. So, let’s dive right in!

B Vitamins Function

B vitamins, also known as the B-complex vitamins, consist of a group of water-soluble nutrients that play a pivotal role in various body functions. These include energy production, nerve function, red blood cell formation, and the metabolism of carbohydrates, proteins, and fats. The B vitamins encompass vitamin B1 (thiamine), vitamin B2 (riboflavin), vitamin B3 (niacin), vitamin B5 (pantothenic acid), vitamin B6 (pyridoxine), vitamin B7 (biotin), vitamin B9 (folate), and vitamin B12 (cobalamin).

The Significance of Vitamin B12

Vitamin B12 is a particularly important member of the B-complex family. It plays a vital role in maintaining healthy nerve cells, aiding DNA synthesis, and supporting the production of red blood cells. Our bodies cannot produce vitamin B12 on their own, and hence, we must obtain it from dietary sources or supplements.

Causes and Symptoms of Vitamin B12 Deficiency | Disease Caused by Deficiency of Vitamin B

Disease Caused by Deficiency of Vitamin B

Vitamin B12 deficiency is a common nutritional problem, and various factors can lead to its development. One of the primary causes is insufficient dietary intake, especially among vegetarians and vegans who may not get enough vitamin B12 from plant-based sources. Additionally, certain medical conditions and medications can interfere with the absorption of vitamin B12 in the digestive system.

Early symptoms of vitamin B12 deficiency may include tiredness, weakness, and a traffic jam in your nervous system, sensations in the hands and feet. As the deficiency progresses, individuals may experience difficulty in maintaining balance, memory problems, and anemia (a shortage of red blood cells). If left untreated, it can lead to severe neurological damage.

The Role of Other B Vitamins in Health

While vitamin B12 is crucial, all B vitamins play a significant role in maintaining our overall health. For instance, vitamin B6 is essential for brain development and function, as well as immune system support. Vitamin B9 (folate) is vital during pregnancy for fetal development and helps in the formation of DNA and red blood cells. Each B vitamin has a unique role, but they often work synergistically to support various body processes.

Dietary Sources of B Vitamins

To prevent vitamin B12 deficiency and ensure adequate intake of other B vitamins, it is essential to have a balanced diet. Good sources of vitamin B12 include meat, fish, eggs, and dairy products.

Nutrient and Vegetable Eating

For vegetarians and vegans, fortified cereals, plant-based milk, and nutritional yeast can be valuable sources of vitamin B12. Other B vitamins can be found in a variety of foods, such as whole grains, leafy greens, legumes, nuts, and seeds.

Prevention and Treatment of B Vitamins Deficiencies

Preventing B vitamin deficiencies involves consuming a diverse range of nutrient-rich foods. For those with dietary restrictions or limited access to certain foods, supplements can be an effective solution, but it is always advisable to consult with a healthcare professional before starting any supplementation.

For individuals diagnosed with a vitamin B12 deficiency, treatments may involve regular B12 injections or high-dose oral supplements, depending on the severity of the deficiency.


B vitamins are a group of essential nutrients that are crucial for maintaining good health. Vitamin B12, in particular, plays a significant role in nerve function and red blood cell production. Deficiencies in these vital nutrients can lead to various health issues, ranging from fatigue to severe neurological problems. By understanding the importance of B vitamins and ensuring a balanced diet that includes suitable sources of these nutrients, we can promote overall well-being and prevent these deficiencies.


The information provided in this article is for educational purposes only and should not be considered medical advice. Always consult with a healthcare professional before making any changes to your diet or lifestyle.

Also Read: Clear Cell Carcinoma: Symptoms, Diagnosis and Treatment in 2023

What is the most common vitamin B deficiency?

The most common vitamin B deficiency is vitamin B12 deficiency. It can result from inadequate dietary intake, especially among vegetarians and vegans, leading to symptoms like fatigue, anemia, and neurological issues.

What are the deficiency diseases of vitamin B12?

Vitamin B12 deficiency can lead to two main deficiency diseases: megaloblastic anemia, where red blood cells become larger and less functional, and neurological problems, such as tingling sensations, numbness, and difficulty with balance and coordination.

What are the 4 stages of B12 deficiency?

The four stages of vitamin B12 deficiency are
Marginal deficiency with no clinical symptoms.
Moderate deficiency leads to fatigue and weakness.
Severe deficiency causes megaloblastic anemia and neurological symptoms.
Advanced deficiency with irreversible nerve damage if left untreated.

What food gives vitamin B12?

Foods that provide vitamin B12 include animal products such as meat like beef, poultry, lamb, fish like salmon, tuna, trout, eggs, and dairy products like milk, cheese, and yogurt. Plant-based sources like fortified cereals, nutritional yeast, and some plant-based milk alternatives may also contain vitamin B12.

How serious is B12 deficiency?

Vitamin B12 deficiency can be a serious health concern if left untreated. It can lead to various complications, including megaloblastic anemia, neurological problems, fatigue, and irreversible nerve damage, highlighting the importance of addressing the deficiency promptly through proper dietary intake or supplementation.

What is the fastest way to increase B12?

The fastest way to increase vitamin B12 levels is through B12 injections or high-dose oral supplements prescribed by a healthcare professional. These methods allow for rapid absorption and can help replenish B12 levels efficiently.

How can we increase vitamin B12?

To increase vitamin B12 levels, one can consume foods rich in B12, such as meat, fish, eggs, and dairy products, or opt for fortified plant-based sources like fortified cereals and nutritional yeast. Additionally, supplements prescribed by a healthcare professional can be taken to address B12 deficiencies effectively.

Is vitamin B12 deficiency curable?

Yes, vitamin B12 deficiency is generally curable. With appropriate treatment, such as B12 injections or high-dose oral supplements, individuals can restore their B12 levels and alleviate the associated symptoms and health issues. Early diagnosis and prompt intervention are crucial for a successful recovery.

Is curd good for B12 deficiency?

Curd, also known as yogurt, is a good source of vitamin B12, especially if it is made from fortified milk. Including curd in the diet can be beneficial for individuals with B12 deficiency, as it provides a natural and tasty way to boost B12 levels. However, it’s essential to remember that curd alone may not be sufficient to address severe B12 deficiencies, and a balanced diet or supplementation might be necessary for a complete recovery. Consulting with a healthcare professional is advisable to determine the most suitable approach for treating B12 deficiency.

Which Indian food contains vitamin B12?

Indian foods that contain vitamin B12 include
Meat-based dishes like chicken curry, mutton biryani, and fish curry are good sources of vitamin B12.
Dairy products such as paneer (cottage cheese) and yogurt (curd) can also contribute to B12 intake in the Indian diet.

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