Coffee reshapes gut bacteria, linking decaf to memory and regular to anxiety relief
A new study from University College Cork finds that both caffeinated and decaf coffee alter gut bacteria, influencing mood and cognition. Decaf improved memory, while caffeinated coffee reduced anxiety. The research highlights coffee's role in the gut-brain connection beyond caffeine.
Key points
- Researchers at APC Microbiome Ireland found coffee changes gut microbiome and metabolites, affecting mood and stress.
- Decaf coffee was linked to better learning and memory, while caffeinated coffee reduced anxiety and improved attention.
- Specific bacteria like Eggertella sp. and Cryptobacterium curtum were more abundant in coffee drinkers.
- The study involved 31 coffee drinkers and 31 non-drinkers, showing coffee's effects extend beyond caffeine.
- Findings suggest coffee is a complex dietary factor influencing health through gut-brain communication.
Background
Previous research has linked coffee to lower dementia risk and improved liver health. This study builds on those findings by exploring the gut-brain axis, a topic gaining attention for its role in mental health. Earlier coverage highlighted coffee's potential benefits for brain health and its complex interactions with the body.
How outlets are covering it
ScienceDaily emphasizes the distinct benefits of caffeinated vs. decaf coffee, highlighting the gut-brain connection. BBC Science Focus Magazine notes that coffee has the strongest association with gut microbiome changes among 150 foods, citing the PREDICT study. News-Medical focuses on how brewing methods and coffee compounds like chlorogenic acids affect gut microbes and metabolism. All sources agree that coffee's effects on health are multifaceted and not solely due to caffeine.
Why it matters
Understanding how coffee influences gut bacteria and brain function could lead to new dietary interventions for mental health and cognitive decline. The findings suggest that coffee, even decaf, may offer benefits beyond alertness, impacting mood, stress, and memory through the gut-brain axis.
What to watch
Future research will need to confirm these findings with larger studies and explore how different brewing methods and coffee compounds affect gut health and cognition. The study also highlights the need for standardized coffee exposure platforms to better understand coffee's role in precision nutrition.
- Scientists just discovered what coffee really does to your gut and brain ScienceDaily
- Drinking caffeinated coffee three times a day can lower your anxiety – this is the surprising reason Good Housekeeping
- This everyday drink outranks 150 foods for its impact on your gut health, experts find BBC Science Focus Magazine
- From espresso to filter coffee, brewing may shape what reaches your gut News-Medical
- Your daily coffee may be doing more than keeping you awake — scientists found a surprising link between yo economictimes.com
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