Modern medicine correctly identifies the biological markers of dementia: amyloid plaques between neurons, tau protein tangles inside neurons, widespread neuroinflammation, reduced acetylcholine levels, and progressive cerebral atrophy. These are real, measurable, and devastating. What it gets wrong is the framing. By treating dementia as an irreversible brain disease rather than a systemic failure of the body's metabolic, vascular, and neurological maintenance systems, it closes the door on recovery before the conversation even begins.