Withdrawal syndrome after the double-blind cessation of caffeine consumption

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Abstract

Background. People who stop consuming caffeine may have symptoms, but the incidence and severity of caffeine withdrawal are not known. This study was performed to determine the effects in the general population of ending one's dietary intake of caffeine. Methods. We studied 62 normal adults whose intake of caffeine was low to moderate (mean amount, 235 mg - the equivalent of 2.5 cups of coffee - per day). They completed questionnaires about symptoms and tests of their mood and performance when consuming their normal diets (base-line period) and at the end of each of two two-day periods during which they consumed caffeinefree diets and under double-blind conditions received capsules containing placebo (placebo period) or caffeine (caffeine period) in amounts equal to their daily caffeine consumption. Results. More subjects had abnormally high Beck Depression Inventory scores (11 percent), high scores on the trait scale of the State-Trait Anxiety Inventory (8 percent), low vigor scores (11 percent) and high fatigue scores (8 percent) on the Profile of Mood States, and moderate or severe headache (52 percent) during the placebo period than during either the base-line period (2, 0, 0, 0, and 2 percent, respectively; P

Original languageEnglish (US)
Pages (from-to)1109-1114
Number of pages6
JournalNew England Journal of Medicine
Volume327
Issue number16
Publication statusPublished - Oct 15 1992

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ASJC Scopus subject areas

  • Medicine(all)

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