From BBC News Mobile
Every NHS patient should be a “research patient” with their medical details “opened up” to private healthcare firms, says David Cameron.
The PM says it will mean all those who use the NHS in England will be helping in the fight against disease.
He hopes the result will be that patients get faster access to new treatments and Britain’s life sciences sector will become a world leader.
But critics say commercial interests are being put ahead of patient privacy.
In a speech in London Mr Cameron said he would consult on changing the NHS constitution, which governs how the the health service is run, so that all patients’ data is used for medical research unless they want to opt out.