Does this mean I'll never have grandchildren?

Men who use mobile phones face increased risk of infertility.

A new study shows a worrying link between poor sperm and the number of hours a day that a man uses his mobile phone.

Those who made calls on a mobile phone for more than four hours a day had the worst sperm counts and the poorest quality sperm, according to results released yest at the American Society for Reproductive Medicine annual meeting in New Orleans.

Doctors believe the damage could be caused by the electromagnetic radiation emitted by handsets or the heat they generate.