Stuff You Should Know Short Stuff: Fainting At The Sight Of Blood
May 11, 2022
Did you know that 15% of people faint at the sight of blood? This fascinating phobia, known as blood injury injection phobia, can be triggered by anything from injuries to needles. The speakers humorously share personal stories while unpacking the science behind vasovagal syncope, the physiological response that leads to fainting. They also explore the evolutionary significance of this reaction and provide tips on conquering blood-related fears through cognitive behavioral therapy. It's a blend of humor and science that reveals the quirky side of our biology!
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Vasovagal Syncope
- Fainting at the sight of blood is a real phenomenon, not just a trope.
- It's a specific type of fainting called vasovagal syncope, involving blood vessels and the vagus nerve.
BII Phobia
- Blood-injury-injection (BII) phobia affects 3-15% of people, causing fainting at the sight of blood, injury, or needles.
- The phobia is not limited to just blood but can also be triggered by witnessing injuries or even the anticipation of an injection.
Unique Phobia Response
- BII phobia is unique because fainting is caused by a drop in blood pressure and heart rate, unlike other phobias.
- Most phobias trigger a fight-or-flight response with increased heart rate.