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Tolerance to the effects of caffeine occurs for caffeine-induced elevations in blood pressure and the subjective feelings of nervousness. Sensitization , the process whereby effects become more prominent with use, may occur for positive effects such as feelings of alertness and wellbeing. [ 122 ]
Treatment of mild caffeine intoxication is directed toward symptom relief; severe intoxication may require peritoneal dialysis, hemodialysis, or hemofiltration. [3] Control of caffeine intake requires awareness of the caffeine content of caffeinated beverages, over-the-counter drugs, and other sources of caffeine in the diet.
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.
The potential benefits of caffeine are increased focus and reaction time, reduced perceived effort, and faster sprint performance. It blocks tiredness-causing adenosine from receptors in the brain.
In 2008, stimulants, such as caffeine, were the most commonly used nootropic agent. [15] In 2016, the American Medical Association adopted a policy to discourage prescriptions of nootropics for healthy people, on the basis that the cognitive effects appear to be highly variable among individuals, are dose-dependent, and limited or modest at ...
Caffeine can cause a physical dependence, if consumed in excessive amounts. [3] The need for caffeine can be identified when individuals feel headaches, fatigue and muscle pain 24 hours after their last energy drink. [4] Some commercially distributed drinks contain guarana, a South American berry with a caffeine content about twice that of ...
Health benefits: Green tea has been studied extensively for its health-promoting effects. Compared to non-tea drinkers, people who drink green tea have lower rates of endometrial, lung, oral and ...
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.