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The well-established beneficial effect of caffeinated coffee on mental performance has been confirmed by EFSA, which states that a cause and effect relationship has been established between a 75mg serving of caffeine – the amount found in approximately one regular cup of coffee – and both increased attention (concentration) and alertness, mainly in situations of low arousal.
- Caffeine may also improve safety and performance during work at night and night driving.
- Positive effects on mood and reaction time have also been documented.
There is an association between the daily intake of caffeine, sleep problems and daytime sleepiness; however, these effects depend on the amount of caffeine ingested over the whole day and also vary with the genetic background of individuals. Those individuals who do experience sleep problems following consumption of caffeinated coffee may choose, or be advised, to switch to decaffeinated products in the afternoon/evening.
In addition, brain mapping technology suggests that the physiological effects of caffeine do not lead to either dependence. Whilst some individuals may experience caffeine withdrawal, these symptoms are short-lived and can be avoided altogether if caffeine intake is decreased progressively.
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