Sleep Experts Warn: Avoid Coffee After Noon for Better Sleep
Translated from Korean, summarized and contextualized by DistantNews.
At a glance
- While coffee after lunch is common, sleep specialists advise against it for better sleep quality.
- A meta-analysis suggests that consuming caffeine later in the day reduces total sleep time.
- To avoid sleep disruption, the last coffee should be consumed about 9 hours before bedtime.
Many consider a post-lunch coffee a daily ritual, but sleep experts caution against this habit, emphasizing its impact on sleep quality. While morning coffee can act as a natural stimulant to combat grogginess and is linked to various health benefits like reduced risk of type 2 diabetes and Parkinson's disease, its consumption in the afternoon can be detrimental.
Recent research published in 'Sleep Medicine Reviews' by Australian Catholic University suggests a clear link between late caffeine intake and reduced total sleep time. The study, a systematic review and meta-analysis of previous research, analyzed data from 24 randomized controlled trials involving healthy adults aged 18 to 65.
The findings indicate that the timing of caffeine consumption significantly affects sleep. Specifically, the last coffee of the day should be consumed no later than approximately 1 p.m. for those going to bed at 10 p.m., or around 2 p.m. for a 11 p.m. bedtime. This timing helps prevent a reduction in overall sleep duration, ensuring better rest.
Originally published by Dong-A Ilbo in Korean. Translated, summarized, and contextualized by our editorial team with added local perspective. Read our editorial standards.