Unproven IVF add-ons; Running injuries; DNA analysis on the NHS

Warnings that expensive, unproven 'add-ons' are being offered by IVF clinics ; Keen jogger Margaret McCartney asks whether rest helps running problems such as stitch, shin splints and plantar fasciitis. Plus DNA testing on the NHS to anyone prepared to pay for it with the results contributing to research. But what exactly is the aim of such testing and are there hidden implications?