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A member asked:
Why does fainting occur when seeing the blood for the first time?
A doctor has provided 1 answer
Low brain blood flow: Fainting occurs when the brain temporarily does not get enough blood flow. Sometimes when we see or experience something shocking or scary our blood vessels dilate (enlarge) and temporarily there is not enough blood pressure to get adequate blood to the brain and we faint..
Answered 8/26/2014
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