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Caffeine dependence can cause a host of physiological effects if caffeine consumption is not maintained. Commonly known caffeine withdrawal symptoms include headaches, fatigue, loss of focus, lack of motivation, mood swings, nausea, insomnia, dizziness, cardiac issues, hypertension, anxiety, and backache and joint pain; these can range in severity from mild to severe. [18]
F10.3 alcohol withdrawal syndrome (which can lead to delirium tremens) F11.3 Opioid withdrawal, including methadone withdrawal [9] F12.3 cannabis withdrawal; F13.3 benzodiazepine withdrawal; F14.3 cocaine withdrawal; F15.3 caffeine withdrawal; F17.3 nicotine withdrawal
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The health effects of coffee include various possible health benefits and health risks. [1]A 2017 umbrella review of meta-analyses found that drinking coffee is generally safe within usual levels of intake and is more likely to improve health outcomes than to cause harm at doses of 3 or 4 cups of coffee daily.
For this study, researchers defined chronic caffeine consumption as drinking any caffeinated beverages — coffee, tea, soda, and energy drinks — five days during the week for more than one year.
Studies show that having caffeine even six hours before bed can cause sleep disturbances, and some doctors recommend stopping caffeine a full eight hours before bed.
For reference, a brewed 8oz (227ml) cup of coffee contains ~95 mg of caffeine (per USDA). [6] According to the Diagnostic and Statistical Manual of Mental Disorders, caffeine overdose can result in a state of excessive stimulation of the central nervous system and the essential feature of Caffeine Intoxication is the recent consumption of caffeine.
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