Churchill was an alcoholic (during War War I and II, when the British needed strategic decisions to be made in the middle of the night, an inebriated Churchill was in the thick of things because even drunk he apparently was a better strategist than most of his sober peers).
Churchill also had chronic and worsening hypertension, in part from stress and in part from an unrestrained diet of much rich and artery-clogging food.
As early as 1947, Churchill’s physician, who was complicit in the lies about Churchill’s health all the years he held public office and who propped him up with amphetamines and calmed him down with depressants, noted in his diary that “[Churchill] is no longer fertile in ideas…his once-teeming mind has run dry.”
Beginning in 1948, Churchill began to regularly experience TIA’s in different parts of his brain. Accompanying the mini-strokes, at times, was temporary numbness on one or the other sides of his body, which resolved in a few hours or a few days.
Churchill would also experience the temporary dysphasia in the 30 minutes to an hour afterward that is characteristic of TIA’s, but the language center of his brain was spared permanent damage until his last major stroke in 1953.
With amphetamines and carefully scripted speeches, therefore, Churchill was able, at least from a verbal aspect, to hide the neurological damage and the cognitive decline that those closest to him were aware was progressing rapidly.
But the signs were everywhere in retrospect. Churchill’s speeches and governing were rooted in the first and second world wars. He was glaringly oblivious to post World-War-II politics, issues, and legislation.
He was literally in the-all-too-common vascular dementia time warp of the past and increasingly unaware of the present and had no concept of the future.
With his doctors and his staff carefully concealing his progressing dementia from the public, Churchill managed to limp along in office through continuous TIA’s and three major strokes, until 1955, when he finally resigned because his cognitive impairment and the physical effects of the strokes and dementia were impossible to conceal anymore.
Churchill lived for 10 more years, but vascular dementia was his constant companion and as it progressed, he retreated and regressed until he remembered no one and nothing and it was impossible to see the man he’d been at the zenith of his life.