Question

 How long can the brain do with out oxygen before it starts to die?

Answer 3 minutes.
http://answers.yahoo.com//question/index?qid=20060816105752AAjwGty

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How long can I stare at the sun before it does damage to my brain?

Technically, the retina of your eye is the only portion of the brain outside of the skull.http://hubel.med.harvard.edu/book/b8.htmYou can damage your retina within only a few seconds. That's brain ... Read More »
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How long can the brain go without oxygen?

The brain often suffers irreversible damage after four to six minutes of suffocation, which results in a coma or death. However, brain cells can survive without oxygen for hours, and some resuscita... Read More »
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How Long Can the Brain and heart Last without Oxygen?

The heart will stop very quickly once it can't get oxygen.Once the heart stops and blood to the brain stops, brain damage begins about 4 minutes later.That's one of the reasons that survival of car... Read More »
http://answers.yahoo.com/question/index?qid=20130403213001AAj0JI7

How long can brain cells live without oxygen?

Three to five minutes is the amount of time brain cells can live without oxygen. The medical condition for oxygen deprivation of the brain is called cerebral hypoxia and it can occur for various re... Read More »
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