Caffeine

While heavy coffee drinking is often blamed for long restless nights, a new genetic analysis reveals that habitual caffeine consumption mainly boosts daytime alertness without inherently causing chronic insomnia.

A new analysis of hundreds of thousands of adults reveals that drinking moderate amounts of coffee is linked to a lower risk of developing anxiety and depression, though excessive consumption may reverse those benefits.

A recent review of animal studies suggests that caffeine blocks specific cellular receptors to reduce neuroinflammation. This immune-calming effect may help alleviate behavioral symptoms associated with mood disorders.

A new study suggests caffeine can reverse anxiety and depression caused by cyclosporine. Researchers found that modulating nitric oxide signaling in mice alleviated the psychiatric side effects of this common immunosuppressant.

A new study suggests that adding cannabidiol, commonly known as CBD, to products containing caffeine and delta-9-tetrahydrocannabinol (THC) can intensify the drug’s psychoactive effects and increase impairment.

A new study demonstrates that ordinary espresso can effectively stain biological samples for electron microscopy. This household beverage offers a safe, low-cost alternative to the radioactive chemicals traditionally used in labs.

A new study shows caffeine boosts positive emotions, especially in the morning. However, its ability to reduce negative feelings is less consistent.

New research suggests that while habitual coffee consumption shortens sleep duration, it increases deep sleep intensity. This indicates the brain may adapt to chronic caffeine intake to ensure restoration.

Could your daily coffee offset the cognitive effects of a high-fat, high-sugar diet? New research explores the relationship between diet, caffeine, and memory, with results that may surprise regular coffee drinkers.

A new study suggests that combining L-theanine and caffeine can help improve attention and reaction time in sleep-deprived adults. Participants were more accurate and quicker to respond during a traffic-related task after taking the supplement compared to a placebo.

A new study in Psychopharmacology reveals a powerful performance-enhancing combination for combat athletes. Researchers found that pairing a low dose of caffeine with preferred warm-up music boosted the attack frequency and efficiency of elite male taekwondo athletes.

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.

Despite concerns about caffeine's effects on young brains, researchers found no evidence that recent or regular consumption influences the relationship between two brain networks linked to attention in early adolescents.

Seniors who regularly consume caffeine may be less prone to cognitive decline, according to a new study. The findings reveal a dose-dependent relationship, with higher caffeine intake linked to significantly lower odds of poor cognitive performance.

Think you can sleep fine after a late coffee? A new study suggests otherwise. Researchers found that while caffeine may not prevent sleep, it creates a "shallower" rest by increasing brain complexity and pushing it toward a more wake-like state.