Scientists are set to test freeze-dried pills containing the faecal matter of healthy and lean donors in a bid to tackle the obesity crisis.
Twenty obese volunteers will be taking part in the research and each will be receiving capsules that include several grams of stool from slim donors.
The pills will be taken every week for six weeks without making any changes to their normal diet and exercise habits while researchers track any changes.
These health and weight recordings will be taken at three, six and 12 months, with the potential to continue further depending on the success of the trial.
Elaine Yu, a professor and clinical researcher at Massachusetts General Hospital is leading the unusual trial.