A scientific study conducted in Ireland revealed that the effects of coffee on health are not limited to caffeine alone and cause significant changes in the gut-brain axis. Researchers working at University College Cork analyzed the health data of 31 people who consumed coffee regularly and 31 participants who did not drink coffee. While there was no difference in basic indicators such as physical activity, sleep quality and mood between the groups in the initial phase of the study; Unique changes were detected in immune markers in the blood and intestinal microbiomes of coffee consumers.
In the later phase of the experiment, the coffee drinking group was asked to stop consumption for two weeks, and then a three-week period was started in which half of the participants were given caffeinated coffee and the other half were given decaffeinated coffee. As a result of the investigations, it was determined that both types of coffee created similar changes on the intestinal microbiome, and also increased cognitive performance by reducing stress, depression and inflammation levels. With caffeinated coffee’s ability to increase attention and cope with stress; It was noted that decaffeinated coffee was directly related to the improvement in memory, sleep quality and physical activity levels.
Microbiologist John Cryan, who was part of the research team, stated that coffee is a complex nutritional factor that interacts with metabolism and emotional health. Cryan emphasized that the findings show that both caffeinated and decaffeinated coffee affect health in complementary ways. While it was stated that the study provides new data on the connection between the gut microbiome and mood, it was reported that more research is needed to elucidate the clear mechanisms of coffee on the gut-brain axis.
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