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A 2018 study showed that caffeine has a positive result on time trial endurance performance for athletes. “The best way to maximize this boost is to couple your cup of coffee with a snack or ...
Over the years, there have been many studies discussing the potential positive and negative health effects of coffee. ... For those who are sensitive to caffeine — for instance, they easily get ...
There have been many studies examining the potential positive and negative effects of caffeine on a person’s health. Much previous research has focused on how caffeine might impact heart health.
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.
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]
On the one hand, caffeine effects appear to be detrimental to short-term memory, working memory included, whereas the effects are somewhat positive for memory over the long term (for example, remembering something better many days later if caffeine was ingested during encoding as well as retrieval, as opposed to no caffeine [7]). Many of the ...
Individuals may have genetic differences that could affect their ability to metabolize caffeine, Routhenstein noted, which means coffee’s effects on heart rate and blood pressure can vary from ...
The excreted metabolites are mostly paraxanthines—theobromine and theophylline—and a small amount of unchanged caffeine. Therefore, the metabolism of caffeine depends on the state of this enzymatic system of the liver. [170] Coffee is also known for its laxative effects, inducing defecation in some people within minutes of consumption.