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Mood boost linked to morning caffeine
A real-world study finds caffeine raises positive emotions, especially in the morning, with some caveats about sleep and dependence.

A large real world study of 236 young adults shows caffeine boosts positive emotions, especially in the morning.
Caffeine in the Morning Gives the Biggest Boost to Mood
Researchers followed 236 young adults in Germany for up to four weeks, collecting smartphone prompts seven times daily about mood and caffeine intake in the previous 90 minutes. They found that having a caffeinated drink in the morning was linked to higher positive mood and greater enthusiasm than on the same hours when caffeine was not consumed.
Key Takeaways
"Caffeine works by blocking adenosine receptors, which can increase dopamine activity."
Mechanism behind the mood boost.
"The mood boost is strongest within the first hours after waking."
Key timing finding.
"Late day caffeine may disrupt sleep and promote dependence."
Practical caution for readers.
The study adds real world relevance to what scientists already suspect about caffeine. Seeing mood shifts in everyday life, not just in a lab, helps explain how a simple morning ritual can affect daily outlook. It also emphasizes timing: the mood boost is strongest in the first hours after waking.
Highlights
- Morning caffeine shifts the mood before the day fully starts
- A simple cup can tilt a dull morning toward possibility
- Wake up and feel better, one cup at a time
A cup of coffee may be more about starting the day than a universal mood cure.
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