What Happens If You Stop Drinking Coffee for 2 Weeks? Study Reveals Gut Metabolites 'Completely Changed'

This news is based on research, and the key point is not just caffeine, but that gut bacteria and metabolites actually change after stopping coffee for two weeks. However, this doesn't mean that not drinking coffee is necessarily healthier, nor does it mean the body is detoxifying. What changes might occur in the body if you stop drinking coffee for two weeks? Change | Study Findings or Possible Sensations --|-- Gut Metabolites | Caffeine and some coffee-related metabolites decrease, while others increase. Gut Microbiota | The relative proportions of some bacteria change, but it cannot be directly judged as good or bad. Bowel Movements | Stool characteristics may change; it's not certain whether constipation or diarrhea will improve. Mental State | People accustomed to drinking coffee may experience headaches, fatigue, and decreased concentration initially. Sleep | If caffeine previously affected your sleep, stopping intake might be helpful. The study was published in 'Nature Communications' in 2026 and involved 62 participants. Of these, 31 who regularly drank coffee stopped for two weeks, then resumed drinking either caffeinated or decaffeinated coffee. This is a relatively small study, and its findings cannot be directly generalized to everyone.