Executive Function
Better planning, decision-making, and impulse control through enhanced prefrontal cortex activity.
TL;DR
Executive function is limited far more by sleep, aerobic fitness and attentional load than by nutrients. Citicoline and creatine show small measurable gains, mostly in people who are sleep-deprived, ageing, or nutritionally depleted.
Why It Matters
Declining executive function predicts loss of independence in older adults and impairs work performance at any age. It is also the domain most sensitive to sleep restriction, making sleep the first thing to investigate.
How to Measure
Biomarkers
Optimization Protocol
Fix sleep first, then train aerobically at least 150 minutes a week, which has the strongest cognitive evidence. Check B12, ferritin and thyroid. Citicoline 250-500 mg daily and creatine 5 g daily are the most defensible additions, particularly with age or sleep debt.
Supporting Supplements
Citicoline (CDP-Choline)
A defensible choice, especially with ageing or attentional complaints.
Creatine Monohydrate
Cheap, safe and well studied. One of the few supplements with real cognitive data.
Supporting Research
Frequently Asked Questions
Typical Timeframe
4-12 weeks
Research Summary
My Notes
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This information is for educational purposes only. Always consult a healthcare professional before starting any supplement regimen.