Dr. Russell Surasky’s comments cut through the noise because they do two things at once: they shut down the most sensational rumor, and then raise a far more sobering possibility. He explains that key hallmarks of Parkinson’s disease just aren’t there: no shuffling gait, no unilateral resting tremor, no cog‑wheel rigidity on one side. Yet what he does see alarms him enough to call, bluntly, for an MRI and hours-long cognitive and motor testing to rule out vascular dementia.

Vascular dementia, he notes, would not come out of nowhere. Biden’s history of atrial fibrillation and two brain aneurysms means his brain has already faced reduced blood flow and past hemorrhages—classic risk factors. Early on, this kind of damage erodes judgment and complex reasoning before it steals memory. That is why, Surasky argues, the country deserves clarity: not speculation, not palace spin, but hard medical facts about the man making its most fateful decisions.