New study reveals coffee's benefits on microbiome and mood

A recent study has uncovered additional health benefits of coffee, including its effects on the microbiome, inflammation, and mood. The research shows that regular consumption influences the gut-brain axis, with even decaf offering perks. These findings highlight interactions beyond caffeine's stimulant properties.

Researchers have identified new mechanisms through which coffee supports health. The study demonstrates how regular coffee consumption modifies the microbiome, reduces inflammation, and positively influences mood. This occurs via the gut-brain axis, a bidirectional communication network linking the digestive system to brain activity, revealing a complex interaction that extends past caffeine's known stimulant effects. Even decaf coffee provides these advantages, according to the findings published ahead of today's date.

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Illustration of a lab mouse showing brain changes from childhood junk food diet, with helpful bacteria depicted.
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Childhood junk food may leave lasting changes in brain circuits that guide eating, mouse study suggests

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Researchers at APC Microbiome Ireland at University College Cork report that early-life exposure to a high-fat, high-sugar diet altered feeding behavior and appetite-related brain pathways in mice into adulthood, even after the animals returned to a standard diet and normal body weight. The team also found that a specific Bifidobacterium strain and a prebiotic fiber mix helped mitigate some of these long-term effects.

Both caffeinated and decaffeinated coffee can boost mood and mental performance by influencing gut microbes. Researchers found that polyphenols in coffee drive many of these benefits. The findings come from a controlled trial involving 62 healthy adults.

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Sprudge Coffee featured a new study by Dr. Christopher Hendon on determining coffee quality, alongside various industry updates. The publication covered topics from record-breaking desserts to legal challenges and new products. These stories reflect ongoing innovations and events in the coffee world.

Researchers have uncovered links between microbes in the mouth and metabolic conditions like obesity, pre-diabetes, and fatty liver disease. The study analyzed oral swabs from over 9,000 participants using advanced sequencing techniques. Experts suggest these findings could lead to simple swab-based screenings.

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Eliminating sucrose from a low-fat diet worsened glucose tolerance and altered the gut microbiome in mice over 16 weeks, according to results presented on Saturday, June 13, 2026, at ENDO 2026, the Endocrine Society’s annual meeting in Chicago.

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