Researchers have made the startling discovery that a gender bending chemical compound is present on some till receipts.
And the levels of hazardous substance Bisphenol A (BPA) can be high enough to suppress male hormones in the body.
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, was quoted by Daily Mail as saying: "A substance like that could shift the balance of the sex hormones in men towards oestrogen.
"In the long term, this leads to less sexual drive, encourages the belly instead of the muscles to grow and has a bad effect on erection and potency."
BPA is also used in food cans, shower curtains, toys and babies bottles.
In addition to suppressing male hormones it is thought that it may be triggering early puberty in girls - and putting them at greater risk of cancer and diabetes.
Scientists have claimed it is harmful enough for the Government to introduce a precautionary ban, according to Daily Mail.
Most manufacturers of baby bottles have stopped putting it in their products but older stock containing the chemical is still on sale.
The US Food and Drug Administration supports its removal and has stated concerns regarding the impact of the chemical on babies and young children.
BPA is known as an endocrine disrupter and interferes with the release of hormones.
It is linked to disorders associated with metabolism, fertility and neural development.
In December, seven experts from five British universities wrote to Andy Burnham, the health secretary at the time, calling for a review of BPA, the paper reported.