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“Excessive daily caffeine intake can cause in the short-term increased heart rate, irritability, anxiety, headache, and insomnia. Over the long term, it can cause hypertension and even ...
And doctors are widely taught that caffeine can cause these heart disturbances. To check, Marcus and colleagues examined 1,388 people, with an average age of 72, taking part in a larger heart study.
The study authors say that caffeine’s impact on the autonomic nervous system (which helps control things like your heart rate and blood pressure) could put undue stress on the heart, as well as ...
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 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]
“However, caffeine also triggers the release of adrenaline, which raises your heart rate and can cause jitteriness or anxiety in some people, especially in large doses,” Dr. Wu continues.
[52] [97] Caffeine can have negative effects on anxiety disorders. [98] According to a 2011 literature review, caffeine use may induce anxiety and panic disorders in people with Parkinson's disease. [99] At high doses, typically greater than 300 mg, caffeine can both cause and worsen anxiety. [100]
Chronic, excessive caffeine — above the recommended 400 mg a day — can elevate heart rate, (and) blood pressure, but depending on the form can come with additional drawbacks such as excessive ...
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