Why Seeing Blood Makes People Faint

Why do some people faint at the sight of blood, while others barely flinch? Dr. Sanjay Gupta explains the surprising science behind blood phobia. Plus, what you need to know about artificial sweeteners.

Producer: Jesse Remedios

Showrunner: Amanda Sealy

Medical Writer: Andrea Kane

Senior Producer: Dan Bloom

Technical Director: Dan Dzula

Executive Producer: Steve Lickteig

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