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Caffeine and coffee effects on cognitive and brain health

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2026-09-05 10:09 UTC → 2026-09-08 05:47 UTC · added ~~removed~~

Research continues to explore the relationship between caffeine, coffee consumption, and brain health. Studies from NOVA Medical School have demonstrated that caffeine may mitigate cognitive impairments caused by obesity by reducing neuroinflammation and improving insulin sensitivity. Similarly, research from the National University of Singapore suggests caffeine may counteract cognitive damage from sleep deprivation by helping to restore synaptic communication in the hippocampus. Newer findings published in the journal Dementia suggest that moderate caffeine intake during an individual's forties may be associated with a reduced risk of developing dementia later in life. This potential protective effect may be influenced by genetic factors, such as CYP1A2 variants which determine caffeine metabolism rates. However, recent findings suggest the impact on higher-order functions may be more nuanced. A study published in the journal Nutrients by Liverpool John Moores University examined 51 recreationally active men aged 18 to 30. The research found that a 300 mg dose of caffeine, taken one hour before testing, did not improve cognitive abilities, reactive agility, mood, fatigue, alertness, or physical temperature. While coffee offers neurological and cardiovascular benefits, preparation methods and drug interactions remain critical considerations. Long-term data involving 500,000 individuals indicates that filter coffee is associated with lower mortality and reduced cardiovascular risk compared to unfiltered ~~coffee, which contains diterpenes like cafestol that can raise LDL cholesterol.~~ coffee. Additionally, espresso extract may influence tau protein structures linked to Alzheimer’s disease, though human trials are still required. Medical experts also highlight significant caffeine-drug interactions. Certain antibiotics, such as ciprofloxacin, can slow caffeine elimination, ~~potentially causing nervousness or palpitations. Furthermore,~~ while coffee can reduce the absorption of levothyroxine, certain antidepressants, and vitamin D, ~~while it may~~ or accelerate the elimination of lithium. ~~To avoid interference, it is recommended to take these medications with water and maintain at least a three-hour separation from caffeine consumption.~~

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