Could a common diabetes drug taken by millions prevent cancer? Scientists raise hope of breakthrough 

A CHEAP drug taken by millions of people to control diabetes may do more than lower blood sugar.

Metformin, which costs 10p per tablet and is already being used by the NHS, could help protect against blood cancer.

Danish scientists found that diabetics taking the drug were less likely to go on to develop myeloproliferative neoplasms (MNP)...