The consumption of excessive caffeine can lead to sleep deprivation

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Consuming excessive caffeine can lead to sleep deprivation, as its stimulating effects can interfere with the body's natural sleep patterns, making it hard to fall asleep or stay asleep. This can result in reduced sleep quality and quantity, leading to daytime drowsiness, fatigue, and impaired cognitive function. To promote better sleep, it is essential to moderate caffeine intake, especially before bedtime.

Source

Richard A. Friedman, MD. “How Too Much Caffeine Can Lead to Sleep Deprivation.” The Washington Post, 30 May 2023, www.washingtonpost.com/wellness/2023/05/30/coffee-caffeine-sleep-deprivation/.