Studi baru ungkap manfaat kopi bagi mikrobioma dan suasana hati

Sebuah studi baru-baru ini mengungkap manfaat kesehatan tambahan dari kopi, termasuk pengaruhnya terhadap mikrobioma, peradangan, dan suasana hati. Penelitian menunjukkan bahwa konsumsi rutin memengaruhi poros usus-otak, bahkan kopi tanpa kafein pun memberikan keuntungan. Temuan ini menyoroti interaksi yang melampaui sifat stimulan kafein.

Para peneliti telah mengidentifikasi mekanisme baru di mana kopi mendukung kesehatan. Studi tersebut menunjukkan bagaimana konsumsi kopi secara teratur memodifikasi mikrobioma, mengurangi peradangan, dan memengaruhi suasana hati secara positif. Hal ini terjadi melalui poros usus-otak, sebuah jaringan komunikasi dua arah yang menghubungkan sistem pencernaan dengan aktivitas otak, yang mengungkapkan interaksi kompleks yang melampaui efek stimulan kafein yang sudah diketahui. Bahkan kopi tanpa kafein pun memberikan keunggulan ini, menurut temuan yang diterbitkan sebelum tanggal hari ini.

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Scientific illustration depicting gut bacteria eroding the colon's mucus layer, causing dry stool and constipation, based on Nagoya University research.
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Nagoya University study links chronic constipation to mucus-degrading gut bacteria, suggests new treatment target

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Researchers at Nagoya University report that two common gut microbes can work together to break down the colon’s protective mucus layer, leaving stool dry and difficult to pass—an effect that standard laxatives may not address. The team also found higher levels of these bacteria in people with Parkinson’s disease, who often experience constipation decades before motor symptoms, and showed in mice that disabling a key bacterial enzyme prevented constipation.

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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Researchers at Edith Cowan University have discovered that varying training intensities can alter the gut bacteria composition in athletes. The study highlights how intense workouts influence microbial balance, while periods of rest lead to dietary shifts and slower digestion. These findings suggest potential links between gut health and athletic performance.

Gut bacteria that recycle oestrogens back into the bloodstream are far more abundant in people from industrialised societies than in hunter-gatherers and rural farmers, according to a new study. Researchers found up to seven times greater recycling capacity in urban populations. The findings raise questions about potential health impacts from elevated hormone levels.

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Polyphenols, natural plant compounds acting as antioxidants, help reduce inflammation and support health, according to experts cited in a Vogue article. Registered dietitians recommend incorporating berries, dark chocolate, coffee, artichokes, apples, nuts, seeds, and herbs. These foods provide varying amounts of polyphenols, with benefits linked to disease prevention.

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