Vitamin B12 Deficiency: Causes, Symptoms & Treatment – Dr. Kanika Sethi, Gwalior

By Dr. Kanika Sethi – Consultant Physician, Gwalior

In our fast-paced lives, we often ignore early signs of fatigue, numbness, or forgetfulness, dismissing them as stress or overwork. But what if these symptoms are trying to tell you something more serious — like a Vitamin B12 deficiency?

Let’s explore how this silent deficiency affects your body and how timely medical care can help you recover fully and lead a healthier life.

🔬 What is Vitamin B12 and Why is it Important?

Vitamin B12, also known as cobalamin, is an essential water-soluble vitamin that plays a crucial role in brain function, nerve health, and red blood cell production. It also helps in the metabolism of every cell in your body, particularly affecting DNA synthesis and energy production.

Since our body cannot produce B12 on its own, it must be obtained from dietary sources or supplements. This makes awareness and timely intervention extremely important.

❗ What Causes Vitamin B12 Deficiency?

A deficiency can happen due to several reasons:

• Inadequate dietary intake, especially in vegetarians and vegans

• Poor absorption in the stomach or intestines (due to conditions like gastritis, Crohn’s disease, celiac disease)

• Chronic alcohol use

• Older age, which reduces absorption efficiency

• Certain medications, including antacids, metformin, and long-term antibiotics

• Autoimmune disorders, such as pernicious anemia

⚠️ Key Warning Signs to Watch Out For:

If you experience any of the following symptoms, you may have low levels of B12:

Physical Symptoms:

• Extreme fatigue and weakness (थकावट और कमजोरी)

• Tingling or numbness in hands and feet (हाथ-पैरों में झुनझुनी या जलन)

• Muscle weakness

• Difficulty walking or maintaining balance

Neurological & Mental Symptoms:

• Memory loss or confusion (याददाश्त की समस्या या भ्रम)

• Mood swings, irritability, or depression (मूड स्विंग्स)

• Poor concentration or brain fog

Other Visible Signs:

• Pale or yellowish skin (पीली त्वचा)

• Swollen tongue or mouth ulcers

• Rapid heartbeat or shortness of breath

These symptoms may appear gradually and worsen if left untreated. In severe cases, B12 deficiency can lead to irreversible nerve damage.

🍳 Dietary Sources of Vitamin B12

Vitamin B12 is naturally found in animal-based foods, including:

• Eggs 🥚

• Milk and dairy products 🧀

• Meat (especially liver and red meat) 🥩

• Poultry 🍗

• Fish like salmon and tuna 🐟

For vegetarians or those with absorption issues, fortified cereals, nutritional yeast, and oral supplements or injections are recommended.

🩺 Diagnosis & Treatment – Dr. Kanika Sethi’s Expert Approach

At Dr. Kanika Sethi’s clinic, diagnosis begins with:

• A detailed symptom review and physical examination

• Blood tests such as serum B12 levels, CBC (complete blood count), and sometimes methylmalonic acid or homocysteine levels

✔️ Treatment Options:

Treatment depends on the severity of the deficiency:

1. Oral Vitamin B12 tablets – for mild deficiency

2. Vitamin B12 Injections – for moderate to severe cases or absorption issues

3. Dietary counseling – to include B12-rich foods

4. Follow-up testing – to monitor improvement

"The key to a healthy life is early diagnosis and personalized treatment. Vitamin B12 deficiency is treatable if caught on time."
— Dr. Kanika Sethi

👩‍⚕️ About Dr. Kanika Sethi

Dr. Kanika Sethi is a highly experienced and compassionate Consultant Physician in Gwalior, with an MBBS and MD in Medicine (Gold Medalist). She serves as Assistant Professor at the Department of Medicine, GRMC and JAH Hospital, Gwalior.

She specializes in treating chronic health conditions, nutritional deficiencies, hypertension, diabetes, and general medicine disorders — with a focus on evidence-based, patient-centered care.

📍 Clinic Locations:

📌 Murar Branch:
Opposite District Hospital, Mal Road, Murar, Gwalior

📌 Aamkho Branch:
New JAH Hospital,Opposite Hazar Bistar Hospital, Aamkho, Gwalior

📞 Contact for Appointment:

📲 Call or WhatsApp: +91 6232105320
🌐 Facebook: https://www.facebook.com/drkanikasethigwalior/

🌐 Instagram: https://www.instagram.com/dr.kanika.sethi/

🌐 Youtube: https://www.youtube.com/@Dr.KanikaSethi

🌐 Linkedin: https://www.linkedin.com/company/drkanikasethi/

✅ Don’t Ignore the Signs

Your health is your greatest wealth. If you're experiencing tiredness, numbness, or memory issues — don’t delay. A simple test and the right treatment can restore your energy and prevent complications.

Take the first step towards better health.
Consult Dr. Kanika Sethi today.