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How high is considered to be high altitude?

High altitude is defined as 5,000 to 11,500 feet (1,524 and 3,505.2 m) above sea level. An altitude between 11,500 and 18,000 feet (5,486.4 m) above sea level is considered to be very high altitude. Anything above 18,000 feet above sea level is considered to be an extreme altitude.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.