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Daily caffeine consumption may not affect acupuncture’s analgesic effects in humans, according to a study by American researchers. Animal studies have previously indicated an inhibitory effect of low-dose oral caffeine on acupuncture analgesia. The team investigated the effect of daily caffeine intake on acupuncture analgesia in 27 healthy subjects using a crossover design. The researchers found that real acupuncture increased pain thresholds compared to sham acupuncture. Participants were divided into high-consumption (mean daily consumption 272.9 mg) and low-consumption (mean daily consumption 51.3 mg) groups based on daily caffeine intake. Responses to all acupuncture treatments were comparable between the two groups, with no association between either daily caffeine intake or duration of caffeine consumption and post-acupuncture pain threshold changes.

Daily Caffeine Consumption Does Not Influence Acupuncture Analgesia in Healthy Individuals: A Preliminary Study. Anesth Analg. 2018 Dec 24.


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