What if Wilson didn't have Alzheimers?

Recent news items indicate that UK Prime Minister Harold Wilson suffered from early onset Alzheimers during his 2nd term in office (March 1974) leading to his resignation in April 1976. So what if he hadn't begun to suffer from it?
Would the Winter of Discontent so destroyed the Labour Party and lead to the Conservatives under Heath and Thatcher?
Would he have pushed through more Education reforms?
What would his international role have achieved?
 
It's hard to seperate out the alzheimers from Wilson's general physical and mental exhaustion. It's certainly, IMO, simplistic to say that Wilson resigned purely because of alzheimers - Wilson was aware that he was declining physically and mentally, but he wouldn't have been aware it was quite so severe.

Wilson had not really stopped working since the war. By the time he resigned, I would say he was probably about ten years older than a healthy man of his age should be.

Wilson just wasn't the sort of PM that wanted to go on and on and on. Even if his mental deterioration hadn't been as it was, I can't see him wanting to go on much beyond 1976. He was just more or less past it by that point - something which he recognised.
 
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