Vitamin B12 Deficiency in Indian Vegetarians: Why You Need to Test (Even If You Feel Fine)

Vitamin B12 deficiency is so common among Indian vegetarians that many people walk around with fatigue, brain fog and tingling hands for years before getting tested. The fix is usually simple — but only if you catch it.

Why Indian Vegetarians Are at High Risk

• B12 is found almost exclusively in animal foods (meat, fish, eggs, dairy)
• Dairy intake in India often isn't enough to meet daily B12 needs
• Long-term acidity medication (PPIs) blocks absorption
• Metformin (common in diabetics) lowers B12 levels
• Older adults absorb less B12 from food naturally

Symptoms You Might Be Brushing Off

• Persistent tiredness and weakness
• Tingling, numbness or "pins and needles" in hands and feet
• Brain fog, poor concentration, memory lapses
• Mouth ulcers and a smooth, sore tongue
• Pale skin, breathlessness on mild exertion
• Mood changes, low mood, anxiety
• Hair fall and brittle nails

The Right Tests to Ask For

• Serum Vitamin B12 — first-line, but can miss early deficiency
• Active B12 (Holotranscobalamin) — more sensitive
• Homocysteine and MMA (Methylmalonic Acid) — functional B12 status
• CBC with peripheral smear — looks for macrocytic anaemia
• Folate and Vitamin D — often deficient together
• Iron studies — to rule out combined anaemia (see our anaemia guide)

What "Normal" Doesn't Mean Optimal

Lab "normal" ranges for B12 in India often start as low as 200 pg/mL. Many experts now consider levels below 400 pg/mL suboptimal, especially with symptoms. Always interpret with your doctor.

How to Correct a Deficiency

• Oral high-dose B12 (methylcobalamin) for mild cases
• B12 injections for severe deficiency or absorption issues
• Fortified cereals, nutritional yeast and dairy
• Repeat testing in 3 months

Book a Vitamin B12 test in Gurugram at Aarvak Diagnostics, or add it to your next full body health checkup. Home sample collection is available across Gurugram.