On the other hand, moderate coffee consumption has been linked in many studies to potential long-term benefits, including improved vascular function and a possible reduced risk of certain cardiovascular conditions in some populations.
Still, individuals with existing heart conditions or caffeine sensitivity may experience palpitations or jitteriness, making moderation key.
Sleep: Timing Matters More Than Quantity
One of the most well-known effects of coffee is its impact on sleep. Caffeine can stay in the system for several hours, with a half-life that often ranges from 3 to 7 hours depending on the individual.
Drinking coffee too late in the day can interfere with the body’s natural circadian rhythm, making it harder to fall asleep or reducing sleep quality even if sleep onset feels normal. This can lead to a cycle of fatigue the next day, followed by increased caffeine use.
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