A cancer specialist at the University of Leicester has spoken out against a 'treatment' which involves the insertion of a cannula containing ozone gas into the vagina.

The procedure, which has been endorsed by alternative medicine business, Medical Wellness Associates in the United States, is said to benefit pelvic and labia pain while also aiding yeast, bacterial and viral infection.

According to the MWA, ozone gas is pumped into the vagina and purports to have anti-bacterial, anti-viral and anti-fungal effects on unhealthy cells.

However, not everyone is convinced by the treatment, with Professor Martin Dyer questioning the validity of the claims that the gas can treat various vaginal infections, and potentially cure cancer.

"Ozone is one of the most powerful oxidising agents known to man, and people have been looking to exploit this very powerful antioxidant action right since its discovery. But it's never amounted to anything," he said.

"As with all charlatanism, it gives the claim that it cures everything," he added.

According to The Independent, the FDA have echoed Professor Dyer's stance on the matter, asserting that ozone is a “toxic gas with no known useful medical application.”