Overview
- Tim Spector highlighted a Nature Microbiology analysis of more than 22,000 people in 25 countries that associated coffee drinking with over 100 gut bacterial species.
- The study reported markedly higher levels of Lawsonibacter asaccharolyticus in habitual drinkers and similar microbial patterns with decaffeinated coffee.
- Researchers point to polyphenols and roughly 1.5 grams of soluble fiber per cup as substrates that feed beneficial microbes and yield metabolites such as quinic acid and hippurate.
- Population studies cited in the coverage associate regular coffee consumption with about a 15% lower risk of cardiovascular disease.
- Guidance emphasizes moderation at roughly two to four cups a day, notes up to 400 mg of caffeine (around four to five cups) is generally considered safe, and flags potential harms above five cups as well as added sugars or ultraprocessed pairings.