CAFFEINE

This study tested whether a slow-release caffeine pill (zümXR) works better than regular caffeine for improving mood, energy, and focus after a night of poor sleep. 36 healthy adults who usually drink moderate caffeine took both types on separate days after sleeping less than 5 h…

This study tested whether giving caffeine to drink before a planned C-section could prevent the common drop in blood pressure caused by spinal anesthesia. 90 full-term pregnant women took part. The goal was to see if caffeine could keep blood pressure stable and improve outcomes …

This study looked at whether drinking coffee after abdominal surgery helps the intestines start working again sooner. 174 adults who had laparoscopic or open surgery were given either regular coffee, decaf coffee, or warm water three times a day. The main goal was to see if a lar…

This study looked at whether chewing caffeinated gum for 5 minutes or 10 minutes changes how quickly caffeine gets into the blood and how long it stays at high levels. Thirty healthy men each tried both chewing times on separate days. The results may help people decide how long t…

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. Researchers measured body angles and movement patterns both when participants were fresh and when they were tired. The go…

This study looked at whether dietary nitrate (found in foods like beets) can reduce the extra strain that caffeine and cold exposure put on the heart and blood vessels. 24 healthy adults took part in this completed trial. Researchers measured blood pressure and artery function to…

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