Dementia is such "a horrible condition" it has become the disease that most frightens people over the age of 55, the Health Secretary told Good Morning Britain.
Speaking ahead of a conference on dementia, Jeremy Hunt reiterated the Prime Minister's pledge to find a cure for the disease "by 2025" and remained optimistic it could be beaten.
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Farrow will appear on TV on Thursday to discuss the allegation and a claim she makes, saying she wants to "bring down" the filmmaker.
MPs approved the EU (Withdrawal) Bill by 324 votes to 295, at a third reading, with the Government seeing off some proposed amendments.