Study finds coffee improves mood and stress, even without caffeine

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A new study looks at the positive effects coffee has on the gut-brain connection.

In a small study published April 21 in the journal Nature Communications, researchers found that regularly drinking both caffeinated and decaffeinated coffee can affect your gut microbiome, which can affect your mood and stress.

Researchers examined psychological tests, caffeine and food diaries, and stool and urine samples in 31 coffee drinkers and 31 non-drinkers to understand changes in their microbiome, mood, and stress levels.

Those who drank both caffeinated and decaffeinated coffee reported lower scores for perceived stress, depression, and impulsivity. According to the authors, this suggests that drinking coffee can significantly improve mood, regardless of its caffeine content.

“Coffee is more than just caffeine. It’s a complex dietary component that interacts with your gut microbiome, your metabolism, and even your mental health,” author John Cryan said in a news release. “Our findings suggest that coffee, whether caffeinated or decaffeinated, may affect health in different, but complementary ways.”

Researchers also found that certain bacteria, such as those that fight unhealthy gut bacteria and stomach infections, are more prevalent in coffee drinkers than in non-coffee drinkers. Specifically, drinking caffeinated coffee reduced anxiety, increased alertness and alertness, and reduced the risk of inflammation.

“Our findings shed light on the microbiome and neurological responses to coffee, as well as potential long-term benefits for a healthier microbiome,” added Cryan. “As the general population continues to think about dietary changes to maintain proper digestive balance, coffee has the potential to be used as a further intervention as part of a healthy balanced diet.”

Although this study is small and there is conflicting evidence about the health benefits of coffee, this study joins a growing body of research focusing on the gut microbiome, as gut health continues to be a buzzword in the wellness field.

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