On 25 October 2006 one of the headline stories run by the BBC news services was that leading scientific institutions in Britain had raised their concern that changes to the regulation of homeopathic medicines were putting patients at risk. At the same time the pro-science pressure group Sense About Science (SAS) reported that 600 medical practitioners and scientists, some of whom are leaders in their field, had signed a petition against allowing promoters of homeopathy to make medical claims about its efficacy (SAS 2006). SAS proclaims that evidence-based medicine is paramount to public health, and that there is no evidence that homeopathy contributes to public health (SAS 2006).