“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 ...

I’m so sorry to have doubted your service. I received a notice from the post office my parcel from you was there. I will be receiving the package today. Thank you so much for all your assistance.

The case, which opened in the High Court on Wednesday, originally involved 3,000 claimants and is set to become the largest product liability case in UK history.

Current rules state that three unsuccessful pregnancies are needed to trigger NHS support - but a pilot project could bring about change.

Researchers stress that simple lifestyle changes can still significantly reduce the risk of cancer.

Poor housing, obesity and the effects of deprivation have been suggested as underlying cause.