Sarah Norcross and Sandy Starr, Progress Educational Trust

"A growing tendency towards delaying conception has increased both the demand for fertility treatment and the difficulty of improving success rates, which remain relatively low. Fertility patients are nowadays faced with an enormous and sometimes bewildering choice of different medical techniques, therapies and supplements to core treatment. These range from array comparative genomic hybridisation to fertility astrology, and from testing for natural killer cells to 'Emotional Freedom Technique' (tapping). Establishing the evidence or lack thereof for the effectiveness of each technique can go a long way towards making sense of the options."