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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