If you take your placebos on time and never miss a “dose” you are less likely to die.

Here’s the big finding: in the placebo group of 1174 patients, the people who took all of their placebo pills on time (the good adherers), were significantly less likely to die than the patients who missed lots of doses. People who took over 75% as directed were 40% less likely to die than those with less than 75% adherence

Neuroskeptic has the story, and it appears not to be simply because healthy people are also more responsible, they controlled for measures of health.

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