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David Cameron has called for more funding for dementia, as he was announced as the new president of Alzheimer's Research UK.

The former prime minister said there should be a more open discussion around dementia, which must not be written off as "an inevitability of later life".

Writing in , he said dementia funding was too far behind cancer research and stroke research.

He quit as prime minister and then left Parliament after the EU referendum.

He has already taken on a role with the National Citizen Service.

On his latest position, Mr Cameron said: "We must win the battle for priorities.

"Cancer research and stroke research deserve all their funding - but dementia shouldn't be so far behind."

He added: "Dementia steals people's lives, turns their relationships upside down, destroys their hopes and dreams.

"We owe it to them, their families and their carers to find a solution."

The former Witney MP said he was "delighted" at his new job, adding: "Dementia is not inevitable and research is our greatest weapon against it."