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ANSWER: For Each Minute Your Brain Does Not Receive Oxygen, Your Chances Of Living Gets Reduced So A persons brain can live for about 7 Minutes without oxygen Edit Share to:
Shares & Saves. Save. The brain is the most important organ in the body because it controls all of the body's functions. While a person can be technically alive without her brain, she cannot experience life without it. Oxygen is very important to the brain in order to use glucose (sugar) as fuel. A lack in a sufficient supply of oxygen will prevent the brain from working properly. This leads to all sorts of neurological signs and symptoms and, if the oxygen is absent for a few minutes or more, death.