Healthy people should not take aspirin to ward off heart attacks and cancer, according to the most comprehensive review of the risks and benefits. There has been growing debate about whether all people over 50 should take a daily, low dose aspirin. But the review, conducted by the research arm of the NHS, said it was a "fine balance" due to the dangers of bleeding in the brain and stomach. Overall it warned against taking the drug, until there was more evidence. Aspirin...

