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Evidence-Based Research · Physician-Reviewed

The Science Behind FOG OFF

Free clinical research on brain fog, cognitive health, and the science behind FOG OFF.

What is Brain Fog? The Complete Scientific Guide · 12 Articles

What is Brain Fog? The Complete Scientific Guide

Huperzine A vs. Alpha GPC

Reviewed by Dr. Alexandru-Theodor Amarfei, M.D. · Feb 2, 2025 · 15 min read Huperzine A vs. Alpha GPC comes down to mechanism: Alpha GPC...

Apr 20, 2026 11 min read
Brain Fog Symptoms You Can’t Ignore: A Checklist

What is Brain Fog? The Complete Scientific Guide

Brain Fog Symptoms You Can't Ignore: A Checklist

Quick Answer: Brain fog is treated by addressing the underlying cause (neuroinflammation, hormonal changes, or chronic illness) through targeted supplements like Phosphatidylserine, Benfotiamine, and Alpha-Lipoic...

Apr 20, 2026 6 min read

What is Brain Fog? The Complete Scientific Guide

Is Brain Fog a Real Medical Diagnosis? ICD-10 Codes, Root Causes, and Expert Guide

ByDr. Alexandru-Theodor Amarfei, M.D.Coordinator, Geriatric Medicine – CHIC Unisanté, France Last Updated:January 31, 2026 Disclosure This content is for informational purposes only and does not...

Apr 13, 2026 17 min read
Twisted bed sheets in moonlight representing a restless night and sleep-deprived brain fog.

What is Brain Fog? The Complete Scientific Guide

Constant Mental Fatigue: Why You're Tired But Not Sleepy

Constant mental fatigue without sleepiness recovers through cognitive rest, not more sleep. Switch tasks to engage different brain regions, reduce your daily decision load, address...

Apr 13, 2026 7 min read
Conceptual medical art showing memory loss and synaptic fading in the human brain.

What is Brain Fog? The Complete Scientific Guide

Understanding Brain Fog-Related Memory Loss

Is brain fog memory loss permanent? In most cases, no. Brain fog memory loss is typically reversible because it stems from neuroinflammation disrupting memory encoding—not...

Apr 13, 2026 7 min read

What is Brain Fog? The Complete Scientific Guide

Is Brain Fog a Real Medical Condition? A Scientific Look

Is Brain Fog a Real Medical Diagnosis? Yes and no—and here's why that matters "Brain fog" is not a single ICD-10 diagnostic code. That's the...

Apr 13, 2026 10 min read

What is Brain Fog? The Complete Scientific Guide

Brain Cloudiness vs. Brain Fog: Is There a Difference?

Written by Dr. Alexandru-Theodor Amarfei, M.D. Published June 15, 2024 Updated January 14, 2026 Reading Time 8 min read Medically Reviewed by Dr. Alexandru-Theodor Amarfei,...

Apr 13, 2026 6 min read
memory loss and brain fog

What is Brain Fog? The Complete Scientific Guide

Brain fog memory loss

Dr. Alexandru-Theodor Amarfei, M.D. January 15, 2025 10 min read Is brain fog memory loss permanent? In most cases, no. Brain fog memory loss is...

Apr 13, 2026 7 min read
Cinematic photography of a person floating in zero gravity with suspended objects, symbolizing the feeling of dissociation and being spaced out.

What is Brain Fog? The Complete Scientific Guide

Feeling Spaced Out and Disconnected: The Neurological Basis

    Everything feels wrong. You're looking at your hands but they don't feel like yours. There's a glass wall between you and the world....

Apr 13, 2026 13 min read
Conceptual art of a loading symbol over a mouth, representing verbal lag and lethologica.

What is Brain Fog? The Complete Scientific Guide

Trouble Finding Words? Here's How to Tell If It's Serious

What To Do If words come back eventually & symptoms fluctuate → Likely brain fog. Often reversible with sleep optimization, stress reduction, and targeted supplements...

Apr 13, 2026 5 min read
brain fog symptoms

What is Brain Fog? The Complete Scientific Guide

What Does Brain Fog Feel Like?

Medically Reviewed By Dr. Alex amarfei , MD  Board Certified Updated January 2026 Read Time 12 min Brain fog feels like a thick mental haze...

Apr 13, 2026 10 min read
Medical illustration of the glymphatic system washing away toxins and brain fog during deep sleep, emphasizing the importance of a daily sleep hygiene checklist.

What is Brain Fog? The Complete Scientific Guide

Neurological Sleep Protocol for Brain Fog and Peak Cognitive Performance

✅ Medically Reviewed by Dr. Alexandru Amarfei, M.D. Want to understand the full picture? Grab our book today! Neurological sleep protocol is about how well your...

Apr 13, 2026 12 min read

Physician-Formulated Cognitive Support

The research led to a formula. The formula is FOG OFF.