The most authoritative answer in 2024
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Isabella Lewis——Studied at the University of Seoul, Lives in Seoul, South Korea.
As a domain expert in neuroscience and physiology, I can tell you that the human brain is extremely sensitive to oxygen deprivation. Unconsciousness can occur within just a few minutes without oxygen.
Brain damage can begin to set in after about
5 minutes of
oxygen deprivation, although this can vary depending on factors such as age, health, and the degree of deprivation. After around
10 minutes without oxygen,
irreversible brain damage and death are likely.
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Oliver Mitchell——Works at the International Criminal Court, Lives in The Hague, Netherlands.
After
five to
ten minutes of not breathing, you are likely to develop serious and possibly irreversible brain damage. The one exception is when a younger person stops breathing and also becomes very cold at the same time. This can occur when a child is suddenly plunged into very cold water and drowns.
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