What do prayers, teddy bears and ratty old blankets have in common? They provide a warm safe feeling to those who clutch tightly to these. Will a teddy bear ward off an intruder in the night? likely not, but the child will sleep better just from the safe feeling he/she/they get from the placebo effect. In this segment, Shamir discusses how the body's biology responds to self-affirmation (placebo) or self-deprecation (nocebo).

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