Coffee And Lifestyle: Coffee, Sleep, and Sleep Quality

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Coffee, Sleep, and Sleep Quality. Caffeine regulates the sleep-wake cycle by increasing alertness and arousal by inhibiting adenosine. It’s hardly surprising, however, that caffeinated coffee can lower sleep quality by lengthening the time it takes to fall asleep, interfering with sleep depth, and reducing overall sleep time. It can also result in more frequent waking and sleep disruption (Huang et al., 2011; Clark and Landholt, 2016).


The rate at which a person breaks down caffeine plays a role in determining the impact on restlessness. Caffeine’s varying influence on sleep induction and arousal may be due to this variety in the enzymatic breakdown of coffee (Youngberg et al., 2011). Caffeine addicts, on the other hand, may experience fewer problems as a result of their tolerance. Caffeine will still affect their sleep in this instance, albeit to a smaller amount than in non-habitual caffeine users (Childs and de Wit, 2012; Drapeau et al., 2006).

Travelers’ jet lag is another example of a disrupted sleep cycle that can be alleviated by taking melatonin, a natural hormone that regulates the sleep cycle. Caffeine consumption three hours before night caused a 40-minute phase delay in the circadian melatonin rhythm in adults, according to a recent study. The size of the phase-delaying reaction caused by 3 h of evening bright light beginning at habitual bedtime was roughly half that of the phase-delaying response induced by exposure to 3 h of evening bright light beginning at habitual bedtime (Burke et al., 2015).

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