The Ultimate Guide to the Causes of Brain Fog

  • Conceptual medical illustration of a brain being rehydrated and detoxified, representing the cure for alcohol-induced brain fog.

    How Alcohol Affects Your Brain ("Hangover Fog")

    ✅ Medically Reviewed by: Dr. Alexandru-Theodor Amarfei, M.D. | Coordinator, Geriatric Medicine – CHIC Unisanté, France You wake up with a headache, dry mouth, and a sense of dread. But once the Advil kicks in and the headache fades, something else remains:...

  • Conceptual medical illustration of a frozen brain thawing and glowing with warm light, representing cognitive recovery from chemotherapy-induced brain fog.

    Chemotherapy and Brain Fog ("Chemo Brain"): A Guide

    ✅ Medically Reviewed by: Dr. Alexandru-Theodor Amarfei, M.D. | Coordinator, Geriatric Medicine – CHIC Unisanté, France You survived the treatment. The cancer is gone or in remission. But you feel like a part of you is missing. You walk into rooms and...

  • Medical illustration of an anesthesia mask lifting off a glass brain, symbolizing recovery from postoperative brain fog and anesthesia side effects.

    Brain Fog After Surgery: Post-Anesthesia Cognitive Decline

    ✅ Medically Reviewed by: Dr. Alexandru-Theodor Amarfei, M.D. | Coordinator, Geriatric Medicine – CHIC Unisanté, France The surgery was a success. The incision is healing. But weeks later, you still feel "off." You can't remember names, you lose your train of thought,...

  • Split-view medical illustration comparing the chaotic neural activity of ADHD with the heavy mental cloudiness of brain fog.

    ADHD and Brain Fog: What's the Overlap?

    ✅ Medically Reviewed by: Dr. Alexandru-Theodor Amarfei, M.D. | Coordinator, Geriatric Medicine – CHIC Unisanté, France You stare at your computer screen. You know what you need to do, but you can’t make yourself do it. Is this the "Executive Dysfunction" of...

  • Medical illustration of a glass brain crystallizing with sugar, visualizing the effects of glucose spikes and insulin resistance on cognitive function.

    Sugar and Brain Fog: How Sweets Slow Your Thoughts

    ✅ Medically Reviewed by: Dr. Alexandru-Theodor Amarfei, M.D. | Coordinator, Geriatric Medicine – CHIC Unisanté, France You eat a donut or a candy bar for a quick burst of energy. For 20 minutes, you feel great. But an hour later, your brain...

  • Surreal illustration of a human head made of dry, cracked earth with a water droplet above, symbolizing the cognitive decline and brain fog caused by dehydration.

    Are You Dehydrated? How Electrolytes Impact Clarity

    ✅ Medically Reviewed by: Dr. Alexandru-Theodor Amarfei, M.D. | Coordinator, Geriatric Medicine – CHIC Unisanté, France You drink coffee in the morning. You work all day. By 2 PM, you have a headache and can't concentrate. You reach for more caffeine. This...