How many of us would have guessed that the Iron Lady of England, Prime Minister Thatcher, whose brilliant mind led a nation for a decade, is now stricken with dementia?

Up until now, we have read studies that urge us to use our minds to delay symptoms of Alzheimer's (the leading cause of dementia).

So how is it possible that the calm collected PM who spoke eloquently during raucious sessions of Parliament (and many times without notes), struggles to recall major incidents while her brain succumbs to the clutches of this terminal disease?

Read more at Thatcher's Battle with Dementia.