Faeces implanted via the nose to treat C. difficile

The faeces is liquefied, but not treated in any way, and reaches the patient's stomach via a tube.

It restores bacterial balance and kills the bug, says Associate Professor Ian Seppelt, an Australian intensive care doctor and anaesthetist.

So far the treatment, known as faecal transplant, has been tested only on a drug resistant form of C. difficile.

Antibiotics are unreliable against it, but the transplant is 95% successful, saving patients from constant abdominal cramps and chronic diarrhoea.

"It sounds radical but it makes a lot of sense," said Professor Seppelt at the 2014 ANZCA Annual Scientific Meeting in Singapore on Thursday.

"Usually patients are sufficiently miserable to go ahead, often using a donation from a relative."

Healthy humans have about 100 times more bacteria cells in their gut than their own cells.

"These good bacteria are essential to keep us alive."

But serious problems