Recent studies indicate that caffeine intake is linked to a notable positive impact, particularly strong within the initial 2.5 hours after waking up (i.e., in the morning).
Individuals who regularly consume caffeine often report feeling better after having coffee or other caffeinated beverages. This effect is noticeable until late morning. Image credit: Sci.News.
“Caffeine is a stimulant for the central nervous system utilized by approximately 80% of the global population and is available in various forms, including coffee, tea, sodas (like Coke), and chocolate.”
“Positive expectations surrounding caffeine use include alleviating fatigue, enhancing cognitive and physical performance, and promoting favorable mood changes.”
“There is a notable gap in research regarding the beneficial effects associated with caffeine in real-world circumstances, especially concerning mood and emotional states.”
The study involved 236 young adults from Germany over a duration of up to four weeks.
Participants answered a brief smartphone survey seven times daily.
This research aimed to explore caffeine consumption in both daily life and controlled laboratory scenarios.
The researchers also examined whether coffee affects individuals differently.
“We were somewhat surprised to find no significant differences among individuals with varying caffeine consumption levels, depressive symptoms, anxiety, or sleep issues,” remarked Dr. Hayenberger.
“The relationship between caffeine intake and emotional responses was largely consistent across all demographics.”
“We anticipated that individuals with higher anxiety levels would experience a decline in mood, including increased tension, after consuming caffeine.”
“However, those who have adverse reactions to caffeine may avoid it, and our study did not include participants who completely abstain from caffeine.”
Scientific findings explain the mood-boosting effects of caffeine on morning emotions, attributed to its ability to block adenosine receptors.
“Caffeine functions by inhibiting adenosine receptors, which can enhance dopamine activity in key brain regions; this phenomenon is linked to improved mood and increased alertness,” states Professor Anu Learro from Warwick University.
“Nonetheless, it’s still uncertain whether these effects are related to diminished withdrawal symptoms following a night’s sleep.”
“Even moderately caffeinated individuals might encounter mild withdrawal symptoms that resolve after their first coffee or tea in the morning.”
study will be published in the journal Scientific Reports.
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J. Haschenberger et al. 2025. Positive effects of association with caffeine consumption do not involve any negative effects changes throughout the day. Sci Rep 15, 28536; doi:10.1038/s41598-025-14317-0
Source: www.sci.news
