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What causes fainting?

By July 30, 2014 - 5:56pm
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Fainting can be really scary. One second you're fine, then all of a sudden you wake up and don't know what happened. I've never fainted before, but am afraid it might happen one day. What causes fainting? Can you avoid it?

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HERWriter Guide

Hi Beth

Thanks for your question! 

Fainting is the sudden loss of consciousness and is generally caused by decreased blood flow to the brain.

his can occur due to:

  • Vasovagal spells (most common cause)—simple fainting that can occur:
    • During medical procedures
    • During times of high stress, trauma, or fright
    • After standing still for a long period of time
  • Low blood pressure, especially when standing (called orthostatic hypotension)
  • Dehydration
  • Anemiadue to blood loss
  • Hypoglycemia(low blood sugar)
  • Side effect of a medication
  • Seizure
  • Strokeortransient ischemic attack
  • Too rapid or too slow heart rhythm, abnormal rhythm
  • Organic heart problems such as:

Beth, it's difficult to prevent fainting altogether but frequent small meals can help if fainting happens due to low blood sugar. 

If you feel any warning signs, such as dizziness or lightheadedness, sit or lie down immediately so that you don't get hurt falling during a fainting spell.

For more, click here: 


Has this explained things well for you Beth?



July 31, 2014 - 10:21am
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