Coffee research and impacts

Leaf stage and roasting shape methylxanthine levels, chlorogenic acid, and overall metabolic profile of Ilex vomitoria leaf extracts

The paper examines how leaf stage and roasting affect methylxanthine levels, chlorogenic acid, and the metabolic profile of yaupon holly leaves.

Metagenomic, metabolomic and sensorial characteristics of fermented Coffea arabica L. var. Castillo beans inoculated with microbial starter cultures

This study investigates how inoculating coffee beans with microbial starter cultures affects sensory attributes, metabolite profiles, and microbial communities during fermentation.

The striatum drives the ergogenic effects of caffeine

This study shows that caffeine's ergogenic effects are mediated by the striatum through neuroplasticity and mitochondrial changes in mice.

Caffeine-induced Plasticity of Grey Matter Volume in Healthy Brains: A placebo-controlled multimodal within-subject study

This study shows that daily caffeine intake reduces grey matter volume in humans and impairs working memory, suggesting potential long-term cognitive detriments.

Wide awake at bedtime? The effects of caffeine on sleep and circadian timing in teenagers - a randomized crossover trial

This study investigates the acute effects of caffeine on sleep and circadian timing in teenagers, finding reduced sleep quality and delayed melatonin onset.

Caffeine boosts preparatory attention for reward-related stimulus information

This study shows caffeine and reward-prospect both improve task performance, with their effects adding together, and caffeine enhancing neural markers of preparatory attention for reward-related information.

Investigating genetic correlations and causal effects between caffeine consumption and sleep behaviours

This study investigates genetic correlations and causal effects between caffeine consumption and sleep behaviors using GWAS and Mendelian randomization, finding no evidence of genetic or causal links.

Sucrose or sucrose and caffeine differentially impact memory and anxiety like behaviours, and alter hippocampal parvalbumin and doublecortin

This study examines the effects of sucrose and sucrose with caffeine on memory, anxiety-like behaviors, and hippocampal markers in rats, finding caffeine mitigates cognitive deficits but may increase anxiety under specific conditions.

Associations of coffee genetic risk scores with coffee, tea and other beverages in the UK Biobank

The paper examines how genetic risk scores for coffee consumption relate to other beverages, finding associations with coffee, tea, and decaffeinated drinks, but not with other beverages or water.