A new study has found that a 400 mg caffeine dose disrupts sleep up to 12 hours before bedtime, yet many people fail to notice these disruptions, especially when consumed earlier in the day.

A Spanish study found that 6 mg/kg of caffeine improved reaction time but caused nervousness and increased energy, while 3 mg/kg had no effect.

Researchers have found that adding sugar or artificial sweetener to drinks with caffeine gives a significant boost to the sleep-wake period in mice

Researchers have found that adding sugar or artificial sweetener to drinks with caffeine gives a significant boost to the sleep-wake period in mice

Communications Biology - Caffeine ingestion shifts sleep EEG towards higher complexity and criticality, flattening the 1/f slope and reducing long-range temporal correlations, reflecting enhanced...

A new study finds that individuals with a history of depression who consume high amounts of caffeine tend to report greater psychological distress. Genetic differences also appear to influence how much caffeine people drink and how sensitive they are.

Gram-negative bacteria like E. coli have built-in gatekeepers, porins, and pumps that decide what gets in or out, including antibiotics. The bacteria's genetic control room tightly regulates these microscopic bouncers. But we still don't fully understand…

How does caffeine influence human behavior when tasks seem impossible? A new study suggests it may help people persist during stressful situations. The research bridges animal models of coping with human motivation and performance.