2026-02-24
Cognitive Stress Reactivity: How Stress Disrupts Mental Performance and What to Do About It
Repeated psychological stress impairs working memory, attention, and decision-making through cortisol-mediated hippocampal effects. This article reviews the mechanisms and the evidence for stress-buffering interventions including adaptogens and behavioral strategies.
2026-02-20
Chronic Stress Overload: Evidence for Theanine, Ashwagandha, Magnesium, and Phosphatidylserine
In chronic stress overload, sleep regularity and behavioral skills remain foundational. Theanine, ashwagandha, magnesium glycinate, and phosphatidylserine can provide modest adjunctive support.
2026-02-19
Lion's Mane and Cognitive Function: Mechanisms, Human Evidence, and Protocol
Lion's Mane mushroom stimulates nerve growth factor production and has shown cognitive benefits in small randomized trials in older adults, with preclinical evidence stronger than human data.
2026-02-17
NAD+ Precursor Supplementation and Cognitive Fatigue: Mechanism and Human Evidence
NAD+ precursors reliably elevate blood NAD+ in humans and activate mitochondrial energy pathways. Whether this translates to clinically meaningful reductions in cognitive fatigue requires larger, longer trials.
2026-01-24
L-Theanine: Caffeine Synergy, Anxiety Reduction, and Sleep Quality Evidence
L-theanine promotes calm focus without sedation. The 2:1 theanine:caffeine combination is one of the best-studied nootropic stacks, consistently improving attention and reducing caffeine jitteriness. Standalone evidence for anxiety and sleep is promising but less robust.