High in the mountains northeast of Mexico City, practically hanging off the side of a mountain, is the tiny town of San Pablito, Puebla. Located in a lush cloud forest, the town isn't easy to reach.

Placebo and nocebo effects are the effects of patients’ positive and negative expectations, respectively, concerning their state of health. 1,2 These effects occur in many clinical contexts, including ...

In medicine, a placebo is a substance, pill, or other treatment that appears to be a medical intervention, but isn’t one. Placebos are particularly important in clinical trials, during which they’re ...