When health services harm more than help: the dangers of overdiagnosis
“First, do no harm,” as suggested by Hippocrates, is a vital principle that should always guide physicians, but they are also well aware that in modern healthcare, whether in the form of drugs, operations, radiotherapy or any other form of treatment, there is always the possibility of causing harm to their patients. All drugs have potential adverse side-effects and all surgery carries risk. Doctors and patients need to be reasonably satisfied that the likely balance of benefit and harm with any intervention is favourable.