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Cognitive Enhancement
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# Cognitive Enhancement Portal: Mind & Cognition Stage: Widely practiced, evidence uneven Evidence: Early human Template: Practice framework Risk: Moderate Reversibility: Reversible Last reviewed: May 2026 == Summary == Attempts to boost focus, memory, or mood with drugs, supplements, and stimulation are common, but robust enhancement in healthy people is weaker than the marketing suggests. == Key takeaways == * Prescription stimulants improve alertness but show modest and inconsistent gains on real cognition in healthy users. * Most over-the-counter nootropics lack good evidence; effects are often small or placebo. * Trade-offs — sleep, dependence, and long-term effects — are frequently underweighted. == What actually helps == The interventions with the most reliable cognitive effects are unglamorous: sleep, exercise, treating underlying conditions, and caffeine used sensibly. These outperform most marketed enhancers on effect size and safety. Prescription stimulants clearly increase wakefulness and perceived productivity, but controlled studies in healthy people show smaller and less consistent gains on memory and complex reasoning than users expect, sometimes trading accuracy for confidence. == Weighing the trade-offs == Over-the-counter nootropic stacks are largely unproven, variably manufactured, and prone to placebo effects. Non-invasive brain stimulation shows task-specific effects in labs that do not reliably generalize to daily life. A disciplined view treats cognitive enhancement like any intervention: define the outcome, measure honestly, prefer reversible options, and account for costs such as disrupted sleep, tolerance, dependence, and unknown long-term effects. == Open questions == * Do measured gains in healthy users survive rigorous, blinded testing? * How should enhancement be handled in schools and workplaces? == Watchlist == * Blinded healthy-user trials * Neuromodulation generalization * Dependence and long-term effects == References == * Cognitive effects of stimulants in healthy people — Ilieva et al., Journal of Cognitive Neuroscience, 2015. https://pubmed.ncbi.nlm.nih.gov/25591060/. Meta-analysis finding small effects of stimulants on healthy cognition. == Categories == [[Category:Mind & Cognition]] [[Category:nootropics]] [[Category:stimulants]] [[Category:neuromodulation]]