CAFFEINE

This study looked at whether drinking coffee after abdominal surgery can help the bowels start working again sooner. About 174 adults who had surgery were given either regular coffee, decaf coffee, or warm water three times a day. The main goal was to see if a larger study is pos…

This study tested whether giving women a 200 mg caffeine pill before spinal anesthesia for a planned C-section could prevent a dangerous drop in blood pressure. 90 full-term pregnant women took part. Half received caffeine, half a placebo. The main goal was to see how many women …

This study tested whether a slow-release caffeine pill (zümXR) could improve mood, alertness, and reduce side effects like jitters compared to regular caffeine after a night of poor sleep. Thirty-six healthy adults who usually drink moderate amounts of caffeine took part. They sl…

This study looked at whether drinking caffeine (3 mg per kg of body weight) helps trained climbers perform better. 13 healthy adults who climb regularly took part. The results showed that caffeine did not improve pull-up strength, grip endurance, or other climbing-related measure…

This study looked at how long you chew caffeinated gum affects how quickly caffeine enters your blood. Thirty healthy men chewed gum with 300 mg of caffeine for either 5 or 10 minutes on separate days. Researchers measured caffeine levels in blood samples taken over three hours t…

This completed study tested whether drinking beetroot juice (rich in nitrate) could reduce the strain on the heart and blood vessels caused by caffeine and cold exposure. Twenty-four healthy adults took beetroot powder, caffeine, and a cold foot bath while researchers measured bl…

This study looked at how a dose of caffeine (6mg per kg of body weight) affects the way healthy adults perform exercises like running, squatting, and jumping, both when fresh and when tired. Researchers measured angles, forces, and timing to see if caffeine changes movement techn…