Using evidence on yourself

Some argue that the appearance of evidence based medicine has transformed medicine, and a table on the BMJ's website compares and contrasts the old world and the new (www.bmj.com). The central change is perhaps that systematic analysis of the evidence becomes the main source of knowledge rather than expert opinion. Some doctors think the whole thing poppycock. But even they will probably be fascinated by Chris Del Mar's evidence based analysis of what to do about his own asymptomatic haematuria (p 165). It illustrates changed thinking.

It was discovered …