Study reveals coffee’s hidden brain and gut benefits
New research suggests coffee does more than boost energy, as scientists uncover its role in reshaping the gut and influencing mental well-being, a Qazinform News Agency correspondent reports.
A study conducted by APC Microbiome Ireland and published in Nature Communications found that both caffeinated and decaffeinated coffee can positively affect the gut microbiome and, in turn, mood and cognition.
Researchers examined 62 participants, comparing regular coffee drinkers with non-drinkers. After a two-week break from coffee, participants showed noticeable shifts in gut-related metabolites. When coffee was reintroduced, both groups reported reduced stress, depression, and impulsivity, regardless of caffeine content.
The study identified higher levels of specific bacteria, including Eggerthella sp. and Cryptobacterium curtum, among coffee drinkers. These microbes are linked to digestive health and protection against harmful bacteria, while increases in Firmicutes were associated with improved emotional states.
Notably, decaffeinated coffee enhanced learning and memory, suggesting that compounds such as polyphenols may play a key role. Meanwhile, caffeinated coffee improved focus, alertness, and reduced anxiety.
Professor John Cryan said: “Our findings reveal the microbiome and neurological responses to coffee, as well as their potential long-term benefits for a healthier microbiome.”
He added: “Coffee is more than just caffeine - it's a complex dietary factor that interacts with our gut microbes, our metabolism, and even our emotional well-being.”
The findings highlight coffee’s potential as part of a balanced diet, offering benefits that extend well beyond its well-known stimulant effects.
Earlier, Qazinform News Agency reported that consuming moderate amounts of coffee or tea daily may help protect the brain as people age, according to a large study published in JAMA.
