Why does the placebo effect work?

Why does the placebo effect work? Why does scratching relieve itches?
17 July 2015
Presented by Chris Smith, Redi Tlhabi

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 An assortment of drugs, including 150mg Effexor XR (by Wyeth Pharmaceuticals), 10mg dicyclomine (by Watson), 100 mg sertraline (generic), 25 mg Topamax (by McNeil), and 10 mg amitriptyline (generic) in addition to vitamin E gelcaps and some generic...

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Why does the placebo effect work? Why do we get goosebumps? Why does scratching relieve itches? How can you fix bad breath? Why is it hard to wee if someone else is there? How long does food stay in the stomach? Plus, why screams are scary.

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