India, Nov. 15 -- In an age where supplements trend on social media and popular brands promise instant fixes, it's easy to assume that every symptom points to a deficiency - especially vitamin B12. Many people start taking supplements simply because others are doing so, or because they seem harmless. But self-diagnosing and self-medicating can be risky, particularly when symptoms like numbness or tingling may have completely different underlying causes.

Dr Rahul Chawla, a neurologist trained at AIIMS, New Delhi, consultant neurologist at IBS Hospital, Lajpat Nagar, and founder of HealthPil.com, is explaining why vitamin B12 supplements should never be taken without proper medical guidance. In an Instagram video posted on 15 November, the...