Caffeine

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.

Caffeine may help prevent stress-induced depression-like symptoms in mice by protecting gut health and reducing inflammation. While more research is needed, the findings raise the possibility that everyday dietary habits could play a meaningful role in mental health

Drinking coffee might wake you up even without the caffeine. Researchers found that habitual coffee drinkers responded similarly to both regular and decaf coffee, pointing to the influence of expectation and ritual on alertness and brain activity.

Caffeinated coffee improved strength and sprint performance in trained men, regardless of chronotype or time of day.