A British man with type 1 diabetes has flown to the US for tests after revealing he no longer uses insulin.

Daniel Darkes, 30, has been living with type 1 diabetes for seven years, but the Daventry-born ex-Army officer has baffled doctors with his recent test results.

Mr Darkes’ pancreas has shown signs of working properly again, and his blood sugar levels have normalized, which led to him coming off his insulin injections.

He has since spent four days in St Louis so doctors can run tests to determine what has happened to his body and whether insulin is being produced.

Speaking to the Northampton Chronicle and Echo newspaper, he said: “I had numerous tests, about four or five, to confirm the main reason why my pancreas had started producing insulin again.

“One of the tests involved me running on a treadmill. They starved me for a good six hours before, and I spent about 30 minutes running at a constant speed to see if my brain went into a kind of shock mode, or starvation mode, to see if it would send signals down to the organs, i.e. my pancreas, which it did.”

Mr Darkes, who has been branded ‘Miracle Dan’ by his friends, also had a microchip inserted into his back to measure his protein levels, and a UV light was shone on his pancreas to detect insulin-producing cells.

Doctors believe this breakthrough could be due to a signal sent from Mr Darkes’ brain to his pancreas, while Mr Darkes hypothesises his love for running as a contributor to his improved health.

The findings from Mr Darkes’ test results are set to be published next week. It is hoped they will shed light on whether he can continue without insulin injections, and potentially lead to future treatments for type 1 diabetes.