The efficacy of prayer has been studied since at least 1872, generally through experiments to determine whether prayer or intercessory prayer has a measurable effect on the health of the person for whom prayer is offered. First-person studies suggest that praying can affect the person praying—sometimes improving physiological measures (like cardiovascular responses) and mental health, though results are mixed and often limited by self-report bias.
The efficacy of prayer has been studied since at least 1872, generally through experiments to determine whether prayer or intercessory prayer has a measurable effect on the health of the person for whom prayer is offered. First-person studies suggest that praying can affect the person praying—sometimes improving physiological measures (like cardiovascular responses) and mental health, though results are mixed and often limited by self-report bias.
Source: Wikipedia "Efficacy of prayer" · CC BY-SA 4.0
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