A study claiming to be the largest ever conducted on the human gut microbiome’s relationship with coffee consumption reveals a positive link between the beverage and gut bacteria, particularly Lawsonibacter asaccharolyticus. This bacterium boosts the metabolization of quinic acid and trigonelline, which research links to a wide range of health benefits. The paper spotlights the lesser-known role of how coffee affects the gut microbiome, which has implications for health.