Researchers have made the startling discovery that a gender bending chemical compound is present on some till receipts…

The compound, used to make ink visible on thermally sensitive paper, is ingested by men when they handle the receipts and then touch their mouths or handle food.

Prof Frank Sommer, 42, a Berlin-based urologist, explained: ‘A substance like that could shift the balance of the sex hormones in men towards oestrogen.’