咖啡对人的影响的研究漫天都是，你随便去google scholar搜一大把，除非你一天一百杯咖啡，不然没有发现有什么坏处。
Coffee doesn’t just energize—it actively reshapes the gut and mind. Researchers found that both caffeinated and decaf coffee altered gut bacteria in ways linked to better mood and lower stress. Decaf even improved learning and memory, while caffeine boosted focus and reduced anxiety. Together, they show coffee works through multiple pathways beyond just caffeine.
Serena Boscaini, Thomaz F. S. Bastiaanssen, Gerard M. Moloney, Federica Bergamo, Laila Zeraik, Caroline O’Leary, Aimone Ferri, Maha Irfan, Maaike van der Rhee, Thaïs I. F. Lindemann, Elizabeth Schneider, Arthi Chinna Meyyappan, Kirsten Berding Harold, Caitríona M. Long-Smith, Carina Carbia, Kenneth J. O’Riordan, José Fernando Rinaldi de Alvarenga, Nicole Tosi, Daniele Del Rio, Alice Rosi, Letizia Bresciani, Pedro Mena, Gerard Clarke, John F. Cryan. Habitual coffee intake shapes the gut microbiome and modifies host physiology and cognition. Nature Communications, 2026; 17 (1) DOI: 10.1038/s41467-026-71264-8