How quickly does HbA1c change?

Answered by 1 Apollo Doctors

Dr Hema Pratima

General Practitioner

MBBS
9+ Yrs

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The disadvantage of HbA1c is that it changes slowly. So any change you make to your diet, exercise or medication will take 6 weeks to show its effect, and the full impact of doing something different might not be visible for 2-3 months.

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Answered 24/07/2025

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Disclaimer: Answers on Apollo 247 are not intended to replace your doctor advice. Always seek help of a professional doctor in case of an medical emergency or ailment.