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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 example, one study found that moderate coffee consumption can reduce the risk of high blood pressure, high cholesterol, and other heart conditions.” 5. Coffee might lower your risk of ...
Regular caffeine consumption was defined as the intake of caffeinated drinks 5 days per week for more than a year. Caffeine drinks were centered on coffee and tea as well as aerated beverages such as:
The study, published in the Journal of Clinical Endocrinology & Metabolism, also found a link between other types of caffeine consumption and lower risk of these diseases — but experts warn that ...
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]
Even doses of caffeine relating to just one cup of coffee can increase sleep latency and decrease the quality of sleep especially in non-REM deep sleep. A dose of caffeine taken in the morning can have these effects the following night, so one of the main practices of sleep hygiene a person can do is to cease the consumption of caffeine. [14]
A study published in Scientific Reports examined how caffeine consumption related to dementia risk, using data from over 453,000 participants.
High caffeine consumption in energy drinks (at least one liter or 320 mg of caffeine) was associated with short-term cardiovascular side effects including hypertension, prolonged QT interval, and heart palpitations. These cardiovascular side effects were not seen with smaller amounts of caffeine consumption in energy drinks (less than 200 mg). [79]