Male infertility, or more correctly male subfertility, has long been thought to contribute to around 50% of couple infertility. In the light of the growing number of men presenting at infertility clinics, the rise in ICSI procedures compared to IVF, and the well documented and now incontrovertible steady decline in sperm counts and quality, this figure now appears to be rising. In fact the possible decline in male infertility reflects a wider crisis for men, with signs of similar increases in the incidence of testicular cancer, cryptorchidism and hypospadias.
