Help for a friend..

[Marley&Me]

I have a friend that has just failed her third IVF attempt. Her DH had cancer years ago and the FS thinks that his sperm count has been effected. I'm not entirely sure of the details, but as far as I know, there is no problems with her.
Naturally, she is devastated about this third attempt and I don't know much about IVF having not gone down that road yet. So I was just looking for some advice anyone might have for her.

TIA


ETA: I thought sperm would reproduce over the years and end up being healthy again?? He had cancer in 1999-2000, now in remission.