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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.
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]
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 ]
People with low caffeine intake have a decreased performance later in the day, compared to moderate and a high-level caffeine intake. Thus the effect of caffeine on short-term memory can differ due to many other factors and thus cannot be instantly generalized. [6]
A study from the University of Kentucky showed that more than 78% of college freshmen consume above the recommended amount of caffeine each day. [21] One-tenth of the US population already suffers from insomnia, and in turn caffeine is often used as a countermeasure for the side effects associated with this lack of sleep. [22]
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.
Between anxiety, jitters, afternoon crashes, and a potential caffeine dependency, java can leave you feeling a whole lot of not-so-great ways. If only there were a natural coffee alternative that ...
If you’re stuck on today’s Wordle answer, we’re here to help—but beware of spoilers for Wordle 1255 ahead. Let's start with a few hints.