“We were at the edge of divorce when I decided to try this. Years and years without delight of orgasm and sexual satisfaction. This could ruin any life but not ours. Viagra worked and I always keep the pill near my bed as nobody knows when my wife asks ...

“Honeymoon returned and my husband feels like a teenager again. His erection is the same as at our first date 30 years ago. He feels like a man again, his penis is hard with a big head so he can be proud of it again. Viagra really helps.”

Understanding the seasonal patterns of sperm could improve fertility treatments, by optimising the timing of treatment, the reasearchers say.

New contract will require patients in England to be given immediate appointment if needed.

Grace Bell, who was born without a viable womb, says her little boy is "simply a miracle".

Bid to improve access to Mounjaro in England, but experts warn eligibility still tightly restricted.