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Longevity · 3 min read
Brain Fog: Common Medical Causes
Fatigue + brain fog isn't a personality trait. Here's the medical map.
Hormonal
Low T (men), low estradiol/progesterone (women), low thyroid — all major brain-fog drivers.
Metabolic
Insulin resistance, blood-sugar instability, B12 deficiency.
Inflammatory
Chronic low-grade inflammation, autoimmune issues, post-viral syndromes.
Sleep
Apnea is shockingly under-diagnosed. If snoring + fatigue, get tested.
Lifestyle
Hydration, training, stress — the basics matter.
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