Male infertility treatment overused, scientists warn

IVF clinics are using a radical male infertility treatment far too frequently despite the risk of long-term health problems to the babies conceived, according to one of the technique's pioneers.

Intracytoplasmic sperm injection involves injecting individual sperm cells directly into an unfertilised egg to improve the chances of producing a viable embryo which can then be implanted into the woman's womb.

-- By Steve Connor