They are the miracle pills that shouldn't really work at all. Placebos come in all shapes and sizes, but they contain no active ingredient. Now they are being shown to help treat pain, depression and even alleviate some of the symptoms of Parkinson's disease. Horizon explores why they work, and how we could all benefit from the hidden power of the placebo.
Bikram Choudhury Larissa Anderson Francesca Asumah Sarah Baughn John Dowd Mukul Dutta Micki Jafa-Bodden Carla Minnard 理查德·尼克松 Mark Quigley Val Sklar Robinson Mandeep Kaur Sandhu Jakob Schanzer Patrice Simon Liz Winfield
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