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HomeHealth QueryHEMOGLOBIN (HB)Why does level of oxygen decrease when altitude in...
  • Female
  • 30 Years
  • 19/05/2023

Why does level of oxygen decrease when altitude increases?

Doctor 1

Answered by 1 Apollo Doctors

Dr. Dr Siri Nallapu

Dr Siri Nallapu

General Practitioner

  • MBBS
  • 5+ Yrs
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High altitudes can cause low oxygen saturation levels or desaturation of an individual's blood. It happens because of low atmospheric pressure at high altitudes. Oxygen saturation levels refer to the extent hemoglobin is bound or saturated to oxygen.

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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.