The sight of gore causes nausea, vomiting, and fainting through a physiological reflex

the verdict

SUPPORTED

the evidence backs this

Recorded sources

2 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

The physiological response to blood, injury, and gore is a well-documented vasovagal reflex characterized by autonomic changes leading to presyncope or syncope.

The analysis

The retrieved literature confirms that viewing blood, injury, or undergoing related medical procedures can trigger vasovagal syncope (fainting) via autonomic nervous system responses and subsequent cerebral hypoperfusion. While the prompt also mentions nausea and vomiting—which commonly accompany vasovagal episodes as part of autonomic activation (parasympathetic predominance)—the core physiological reflex of fainting in response to blood and injury stimuli is heavily supported by clinical literature on vasovagal and blood/injury phobia syncope.

Evidence for · 2

Predisposition to Vasovagal Syncope in Subjects With Blood/Injury Phobia

Recorded source metadata

Valentina Accurso, Mikolaj Winnicki, Abu S.M. Shamsuzzaman, Amy Wenzel, Alan Kim Johnson, Virend K. Somers. Predisposition to Vasovagal Syncope in Subjects With Blood/Injury Phobia. 2001. https://doi.org/10.1161/hc3301.094910

Demonstrates that blood and injury stimuli trigger vasovagal syncope (fainting) through autonomic dysregulation.

Source citation format

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More for · 1

Syncopal reactions in blood donors: Pathophysiology, clinical course, and features.

Recorded source metadata

Basavarajegowda A, Nalini YC. Syncopal reactions in blood donors: Pathophysiology, clinical course, and features.. 2024. https://doi.org/10.4103/ajts.ajts_167_21

Explains that syncopal reactions, including fainting triggered by fear, pain, or emotional distress related to blood or injury, are driven by an exaggerated autonomic response leading to cerebral hypoperfusion.

Source citation format

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first checked01 Aug 2026

judged → SUPPORTED · 8601 Aug 2026

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