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.
HD父女之战:解放布兰妮布兰妮·斯皮尔斯,艾琳·李·卡尔,西蒙·考威尔,罗茜·欧唐内,凯文·费德兰,萨姆·卢特菲,林恩·斯皮尔斯,Mark Vincent Kaplan,Jenny Eliscu,Tania Baron,Adnan Ghalib,John James Nazarian,Tony Chicotel,Lorilee Craker,Howard Grossman,James Edward Spar,Felici