The Alan Nabarro Medal has been presented to Leven man Neil Paterson at a ceremony in the Diabetes Centre, Victoria Hospital, Kirkcaldy.
The award is made by Diabetes UK to those who have lived with type one diabetes and insulin treatment for 50 years.
The honour recognises the challenges faced by people living with diabetes, and it was presented to Mr Paterson by consultant physician, Dr John Chalmers.
The award is named after Alan Nabarro, who, after being diagnosed with diabetes in 1922, was given just six months to live.
Through the discovery of insulin, he managed his condition for a further 55 years and spent his life fighting discrimination against those with diabetes.
Dr Chalmers said: “The management of Type 1 diabetes has changed remarkably over the last 50 years and we are seeing more and more patients with similar duration of the condition.
“The whole team at the Diabetes Centre congratulates Neil on receiving the medal and for the hard work he has put into managing his condition over the years.”