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Caffeine is energizing, but if it's impacting your sleep, it may be time to scale back.
Caffeine dependence is a condition characterized by a set of criteria, including tolerance, withdrawal symptoms, persistent desire or unsuccessful efforts to control use, and continued use despite knowledge of adverse consequences attributed to caffeine. [1] It can appear in physical dependence or psychological dependence, or both.
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Feeling tired after eating is common and many factors can cause that post-meal fatigue, from the types of foods you ate to underlying conditions. The Real Reason You Feel Tired After Eating—and ...
In chronic psychiatric patients, caffeine, the major active ingredient in coffee, is associated with anxiety. [31] [32] At high doses, typically greater than 300 mg, caffeine can both cause and worsen anxiety. [33] For some people, discontinuing caffeine use can significantly reduce anxiety. [34]
Caffeine-induced anxiety disorder is a subclass of the DSM-5 diagnosis of substance/medication-induced anxiety disorder. The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, or DSM-5, is the current authority for psychiatric diagnosis in the United States.
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Caffeine can accumulate in individuals with severe liver disease, increasing its half-life. [195] A 2011 review found that increased caffeine intake was associated with a variation in two genes that increase the rate of caffeine catabolism. Subjects who had this mutation on both chromosomes consumed 40 mg more caffeine per day than others. [196]